Pub Date : 2024-09-18DOI: 10.1088/1555-6611/ad7723
M S Swapna, S Sankararaman and D Korte
The progress made in lasers and data acquisition systems has paved the way for innovative non-destructive evaluation methods based on the photothermal phenomenon. Beam deflection spectrometry (BDS) is a photothermal spectroscopic technique that offers ultra-sensitivity, high signal-to-noise ratios, and reduced sample preparation requirements. These advantages provide precise assessment of advanced material (AM) properties. This review presents a comprehensive in-depth analysis, thus helping researchers to understand the potential and future perspectives of BDS along with the theory, instrumentation, and application supported by the literature data. The objective of this review is also to present the possibilities of BDS in the characterization of AMs, including organic, inorganic, and hybrid organic–inorganic materials in the form of thin films, coatings, composites, and nanomaterials.
{"title":"Application of photothermal beam deflection spectrometry for non-destructive evaluation of advanced materials: a state-of-the-art review","authors":"M S Swapna, S Sankararaman and D Korte","doi":"10.1088/1555-6611/ad7723","DOIUrl":"https://doi.org/10.1088/1555-6611/ad7723","url":null,"abstract":"The progress made in lasers and data acquisition systems has paved the way for innovative non-destructive evaluation methods based on the photothermal phenomenon. Beam deflection spectrometry (BDS) is a photothermal spectroscopic technique that offers ultra-sensitivity, high signal-to-noise ratios, and reduced sample preparation requirements. These advantages provide precise assessment of advanced material (AM) properties. This review presents a comprehensive in-depth analysis, thus helping researchers to understand the potential and future perspectives of BDS along with the theory, instrumentation, and application supported by the literature data. The objective of this review is also to present the possibilities of BDS in the characterization of AMs, including organic, inorganic, and hybrid organic–inorganic materials in the form of thin films, coatings, composites, and nanomaterials.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"28 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-15DOI: 10.1088/1555-6611/ad7722
Ruijie Xiao, Guixia Pan and Ye Liu
We investigate the tunable multicolor optomechanically induced transparency and the effect of slow/fast light in a hybrid electro-optomechanical system, in which a degenerate optical parametric amplifier (OPA) and a type three-level atomic ensemble are placed in a optical cavity with two oscillator modes. The system is driven by a strong pump field and a weak probe field, respectively. Multicolor transparency windows appear in the output field under the atom-photon-OPA-phonon-phonon coherent interaction. And the position and width of the transparent port of the output field can be manipulated by properly modifying the different parameters of the subsystem. We also research the slow/fast light effect related to phase and group delay in the probe field. Our proposal provides a great flexibility for phonon storage and has some potential applications in quantum information processing.
{"title":"Tunable multicolor optomechanically induced transparency and slow-fast light in hybrid electro-optomechanical system","authors":"Ruijie Xiao, Guixia Pan and Ye Liu","doi":"10.1088/1555-6611/ad7722","DOIUrl":"https://doi.org/10.1088/1555-6611/ad7722","url":null,"abstract":"We investigate the tunable multicolor optomechanically induced transparency and the effect of slow/fast light in a hybrid electro-optomechanical system, in which a degenerate optical parametric amplifier (OPA) and a type three-level atomic ensemble are placed in a optical cavity with two oscillator modes. The system is driven by a strong pump field and a weak probe field, respectively. Multicolor transparency windows appear in the output field under the atom-photon-OPA-phonon-phonon coherent interaction. And the position and width of the transparent port of the output field can be manipulated by properly modifying the different parameters of the subsystem. We also research the slow/fast light effect related to phase and group delay in the probe field. Our proposal provides a great flexibility for phonon storage and has some potential applications in quantum information processing.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"45 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-12DOI: 10.1088/1555-6611/ad7720
Srivathsav Karnati and Biswajit Pathak
Biospeckle offers a practical tool for contact-free testing and monitoring of biological samples, providing unique insights into dynamics of biological processes. In the present work, we design an experimental arrangement to perform quality assessment on biological samples using biospeckle patterns. We analyse the speckle patterns and evaluate its important parameters by constructing a grey-level co-occurrence matrix (GLCM). Furthermore, we propose an alternative and reliable method to study the biospeckle patterns by constructing a color-channel assessment matrix. The proposed approach provides both qualitative and quantitative information of the sample under study, with minimum speckle images and no stringent requirement of correct parameter selection, unlike in the case of GLCM method. Proof-of-concept experimental results are provided that demonstrate the feasibility of the proposed method in evaluating the quality of biological samples.
{"title":"Analysis of biospeckle pattern using grey-level and color-channel assessment methods","authors":"Srivathsav Karnati and Biswajit Pathak","doi":"10.1088/1555-6611/ad7720","DOIUrl":"https://doi.org/10.1088/1555-6611/ad7720","url":null,"abstract":"Biospeckle offers a practical tool for contact-free testing and monitoring of biological samples, providing unique insights into dynamics of biological processes. In the present work, we design an experimental arrangement to perform quality assessment on biological samples using biospeckle patterns. We analyse the speckle patterns and evaluate its important parameters by constructing a grey-level co-occurrence matrix (GLCM). Furthermore, we propose an alternative and reliable method to study the biospeckle patterns by constructing a color-channel assessment matrix. The proposed approach provides both qualitative and quantitative information of the sample under study, with minimum speckle images and no stringent requirement of correct parameter selection, unlike in the case of GLCM method. Proof-of-concept experimental results are provided that demonstrate the feasibility of the proposed method in evaluating the quality of biological samples.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"6 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-11DOI: 10.1088/1555-6611/ad71ac
Harith Ahmad, Bilal Nizamani, Muhamad Zharif Samion, Zamri Radzi and Shufeng Sun
In this work, the potential of arrayed waveguide gratings (AWGs) in ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fibers to produce a dual-wavelength fiber laser (DWFL) is presented, covering the O- and S- communication bands. These DWFLs are rarely reported, and this is the first demonstration in these bands using AWGs and ZBLAN fibers with dopants such as praseodymium and thulium. The O-band DWFL was achieved in a praseodymium-doped fluoride fiber laser (PDFFL), and the S-band DWFL was obtained in thulium-doped fluoride fiber lasers (TDFFLs). The dual wavelength with a wavelength spacing of 2.7 nm was generated at operating wavelengths of 1307.4 and 1310.1 nm in the O-band. Meanwhile, the S-band DWFL was generated at operating wavelengths of 1503.6 and 1505.9 nm, with a wavelength spacing of 2.3 nm. The two DWFLs were switched by changing AWG channels within the PDFFL and TDFFL cavities. The O-band and S-band DWFLs were switchable at wavelength spacings of 2.7–22.8 nm and 2.3–20.8 nm, respectively. These DWFLs in communication bands provide opportunities for possible applications in dense wavelength division multiplexing high-speed optical networks.
{"title":"Arrayed waveguide gratings (AWGs) in ZBLAN fibers for switchable dual-wavelength fiber lasers in the O- and S-band regions","authors":"Harith Ahmad, Bilal Nizamani, Muhamad Zharif Samion, Zamri Radzi and Shufeng Sun","doi":"10.1088/1555-6611/ad71ac","DOIUrl":"https://doi.org/10.1088/1555-6611/ad71ac","url":null,"abstract":"In this work, the potential of arrayed waveguide gratings (AWGs) in ZrF4-BaF2-LaF3-AlF3-NaF (ZBLAN) fibers to produce a dual-wavelength fiber laser (DWFL) is presented, covering the O- and S- communication bands. These DWFLs are rarely reported, and this is the first demonstration in these bands using AWGs and ZBLAN fibers with dopants such as praseodymium and thulium. The O-band DWFL was achieved in a praseodymium-doped fluoride fiber laser (PDFFL), and the S-band DWFL was obtained in thulium-doped fluoride fiber lasers (TDFFLs). The dual wavelength with a wavelength spacing of 2.7 nm was generated at operating wavelengths of 1307.4 and 1310.1 nm in the O-band. Meanwhile, the S-band DWFL was generated at operating wavelengths of 1503.6 and 1505.9 nm, with a wavelength spacing of 2.3 nm. The two DWFLs were switched by changing AWG channels within the PDFFL and TDFFL cavities. The O-band and S-band DWFLs were switchable at wavelength spacings of 2.7–22.8 nm and 2.3–20.8 nm, respectively. These DWFLs in communication bands provide opportunities for possible applications in dense wavelength division multiplexing high-speed optical networks.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"56 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1088/1555-6611/ad6d4f
Rustem Shakhmuratov
The generation of pulses from a periodic phase-modulated continuous wave (CW) laser field, which is transmitted through a group-delay-dispersion (GDD) circuit, is considered. A time lens (TL), consisting of a quadratic phase modulator and a GDD circuit is proposed in combination with temporal array illuminators (TAI) using another GDD circuit. The time lens producing field compression into pulses is realized for a particular value of the normalized fractional Talbot length (NFTL) <inline-formula> <tex-math><?CDATA $L/L_{T} = P_{1}/Q_{1}$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:mi>L</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>L</mml:mi><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href="lpad6d4fieqn1.gif"></inline-graphic></inline-formula>, where <italic toggle="yes">L</italic> is the physical length of the GDD circuit, <italic toggle="yes">L</italic><sub><italic toggle="yes">T</italic></sub> is the Talbot length, <inline-formula> <tex-math><?CDATA $P_{1} = 1$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href="lpad6d4fieqn2.gif"></inline-graphic></inline-formula>, and <italic toggle="yes">Q</italic><sub>1</sub> is an integer. The length of the GDD circuit is selected to convert a given parabolic phase-modulated CW laser field into short pulses repeated with a phase modulation period <italic toggle="yes">T</italic> in accordance with the chirp radar concept. If NFTL is increased by <inline-formula> <tex-math><?CDATA $1/Q_{2}$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:mn>1</mml:mn><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href="lpad6d4fieqn3.gif"></inline-graphic></inline-formula>, where <inline-formula> <tex-math><?CDATA $Q_{2} = 4$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>4</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href="lpad6d4fieqn4.gif"></inline-graphic></inline-formula>, 6, or 8, the pulse sequence period is shortened as <inline-formula> <tex-math><?CDATA $T/2$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:mi>T</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href="lpad6d4fieqn5.gif"></inline-graphic></inline-formula>, <inline-formula> <tex-math><?CDATA $T/3$?></tex-math><mml:math overflow="scroll"><mml:mrow><mml:mi>T</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:mn>3<
{"title":"Generation of pulses and multiplying their repetition rate using the temporal fractional Talbot effect","authors":"Rustem Shakhmuratov","doi":"10.1088/1555-6611/ad6d4f","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d4f","url":null,"abstract":"The generation of pulses from a periodic phase-modulated continuous wave (CW) laser field, which is transmitted through a group-delay-dispersion (GDD) circuit, is considered. A time lens (TL), consisting of a quadratic phase modulator and a GDD circuit is proposed in combination with temporal array illuminators (TAI) using another GDD circuit. The time lens producing field compression into pulses is realized for a particular value of the normalized fractional Talbot length (NFTL) <inline-formula>\u0000<tex-math><?CDATA $L/L_{T} = P_{1}/Q_{1}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>L</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>L</mml:mi><mml:mrow><mml:mi>T</mml:mi></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad6d4fieqn1.gif\"></inline-graphic></inline-formula>, where <italic toggle=\"yes\">L</italic> is the physical length of the GDD circuit, <italic toggle=\"yes\">L</italic><sub><italic toggle=\"yes\">T</italic></sub> is the Talbot length, <inline-formula>\u0000<tex-math><?CDATA $P_{1} = 1$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad6d4fieqn2.gif\"></inline-graphic></inline-formula>, and <italic toggle=\"yes\">Q</italic><sub>1</sub> is an integer. The length of the GDD circuit is selected to convert a given parabolic phase-modulated CW laser field into short pulses repeated with a phase modulation period <italic toggle=\"yes\">T</italic> in accordance with the chirp radar concept. If NFTL is increased by <inline-formula>\u0000<tex-math><?CDATA $1/Q_{2}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mn>1</mml:mn><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad6d4fieqn3.gif\"></inline-graphic></inline-formula>, where <inline-formula>\u0000<tex-math><?CDATA $Q_{2} = 4$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mo>=</mml:mo><mml:mn>4</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad6d4fieqn4.gif\"></inline-graphic></inline-formula>, 6, or 8, the pulse sequence period is shortened as <inline-formula>\u0000<tex-math><?CDATA $T/2$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>T</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad6d4fieqn5.gif\"></inline-graphic></inline-formula>, <inline-formula>\u0000<tex-math><?CDATA $T/3$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mi>T</mml:mi><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:mn>3<","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"69 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1088/1555-6611/ad71ad
Jiawei Qiao, Jiajia Shen, Ping Jiang, Weinan Caiyang, Huajun Yang
In consideration of the importance of the partially coherent beam (PCB) in optical communication, the coupling of partially coherent Laguerre Gaussian vortex beam (PCLGVB) with single-mode fiber after passing through a Cassegrain transmitting antenna is researched. Meanwhile, the effect of atmospheric turbulence and the assembly misalignments is also considered. In the paper, the transmission of a PCLGVB through a Cassegrain transmitting antenna is mathematically modeled and the coupling efficiency is numerically calculated. And as the propagation distance increases, the coupling efficiency shows an upward trend. In the meanwhile, the PCB is more resistant to the disruptions introduced by atmospheric turbulence and misalignments. And for the coupling between PCLGVB and the single-mode fiber, as the lateral offset or tilt angle increases, the coupling efficiency remains stable in some intervals, or even appears to grow anomalously, which may provide a new idea for enhancing the coupling efficiency. Compared to the case of perfect alignment, the lateral offset of 0 with a tilt angle of 6.5° has a higher coupling efficiency of 21.35%.
{"title":"Fiber coupling of partially coherent Laguerre Gaussian vortex beam in a Cassegrain antenna system","authors":"Jiawei Qiao, Jiajia Shen, Ping Jiang, Weinan Caiyang, Huajun Yang","doi":"10.1088/1555-6611/ad71ad","DOIUrl":"https://doi.org/10.1088/1555-6611/ad71ad","url":null,"abstract":"In consideration of the importance of the partially coherent beam (PCB) in optical communication, the coupling of partially coherent Laguerre Gaussian vortex beam (PCLGVB) with single-mode fiber after passing through a Cassegrain transmitting antenna is researched. Meanwhile, the effect of atmospheric turbulence and the assembly misalignments is also considered. In the paper, the transmission of a PCLGVB through a Cassegrain transmitting antenna is mathematically modeled and the coupling efficiency is numerically calculated. And as the propagation distance increases, the coupling efficiency shows an upward trend. In the meanwhile, the PCB is more resistant to the disruptions introduced by atmospheric turbulence and misalignments. And for the coupling between PCLGVB and the single-mode fiber, as the lateral offset or tilt angle increases, the coupling efficiency remains stable in some intervals, or even appears to grow anomalously, which may provide a new idea for enhancing the coupling efficiency. Compared to the case of perfect alignment, the lateral offset of 0 with a tilt angle of 6.5° has a higher coupling efficiency of 21.35%.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"6 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Our research focuses on the interplay between thermal noise and decoherence channels on quantum coherence and nonclassical correlations in a hybrid (1/2,1) Heisenberg model. This hybrid system integrates the Dzyaloshinsky–Moriya interaction (DMI) and operates under the influence of an external magnetic field. We use local quantum Fisher information (LQFI) for correlation estimation and relative entropy of coherence for coherence measurement in the considered system. Our investigation encompasses various parameters of the hybrid system, the strength of the DMI and the intensity of the external magnetic field. Our findings underscore that elevated temperature compromises both nonclassical correlations and coherence. On the other hand, the robustness of the DMI mitigates the impact of thermal noise on quantum Fisher information correlations and relative entropy of coherence in the hybrid system. Additionally, we inspect the impact of decohering channels-specifically, dephasing, phase flip, and bit- and trit-flip channels-on thermal coherence and quantum correlations. The introduction of various decoherence processes into the hybrid qubit-qutrit system leads to a competition with thermal fluctuations, thereby giving rise to out-of-equilibrium states. Our results indicate that as the decoherence strength parameter (p) increases, both LQFI and relative entropy of coherence exhibit similar behaviors in the dephasing and phase flip channels. These resources gradually diminish, eventually disappearing entirely at p = 1. In the context of the bit- and trit-flip channels, quantum coherence displays notable distinctions compared to what is observed under dephasing and phase flip channels, revealing that coherence can be preserved if the DMI is strong and the intensity of the external magnetic field is reduced. These findings are important since it is crucial to first understand the decoherence process, arising from the interaction with the environment, and then to find ways to hinder this decoherence in order to avoid the complete loss of the quantum resources necessary to quantum information processing.
{"title":"Metrological non-classical correlations and quantum coherence in hybrid (1/2,1) system under decoherence channels","authors":"Abdessamie Chhieb, Mansoura Oumennana, Zakaria Bouafia, Aicha Chouiba, Mostafa Mansour, Mohamed Ouchrif","doi":"10.1088/1555-6611/ad71b0","DOIUrl":"https://doi.org/10.1088/1555-6611/ad71b0","url":null,"abstract":"Our research focuses on the interplay between thermal noise and decoherence channels on quantum coherence and nonclassical correlations in a hybrid <inline-formula>\u0000<tex-math><?CDATA $(1/2,1)$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:mo stretchy=\"false\">(</mml:mo><mml:mn>1</mml:mn><mml:mrow><mml:mo>/</mml:mo></mml:mrow><mml:mn>2</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn><mml:mo stretchy=\"false\">)</mml:mo></mml:mrow></mml:math><inline-graphic xlink:href=\"lpad71b0ieqn2.gif\"></inline-graphic></inline-formula> Heisenberg model. This hybrid system integrates the Dzyaloshinsky–Moriya interaction (DMI) and operates under the influence of an external magnetic field. We use local quantum Fisher information (LQFI) for correlation estimation and relative entropy of coherence for coherence measurement in the considered system. Our investigation encompasses various parameters of the hybrid system, the strength of the DMI and the intensity of the external magnetic field. Our findings underscore that elevated temperature compromises both nonclassical correlations and coherence. On the other hand, the robustness of the DMI mitigates the impact of thermal noise on quantum Fisher information correlations and relative entropy of coherence in the hybrid system. Additionally, we inspect the impact of decohering channels-specifically, dephasing, phase flip, and bit- and trit-flip channels-on thermal coherence and quantum correlations. The introduction of various decoherence processes into the hybrid qubit-qutrit system leads to a competition with thermal fluctuations, thereby giving rise to out-of-equilibrium states. Our results indicate that as the decoherence strength parameter (<italic toggle=\"yes\">p</italic>) increases, both LQFI and relative entropy of coherence exhibit similar behaviors in the dephasing and phase flip channels. These resources gradually diminish, eventually disappearing entirely at <italic toggle=\"yes\">p</italic> = 1. In the context of the bit- and trit-flip channels, quantum coherence displays notable distinctions compared to what is observed under dephasing and phase flip channels, revealing that coherence can be preserved if the DMI is strong and the intensity of the external magnetic field is reduced. These findings are important since it is crucial to first understand the decoherence process, arising from the interaction with the environment, and then to find ways to hinder this decoherence in order to avoid the complete loss of the quantum resources necessary to quantum information processing.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"34 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-02DOI: 10.1088/1555-6611/ad71af
Xinting Jia, Jing Jia
Based on the vector angular spectrum representation, the contributions of the propagating and evanescent waves to the vector vortex Laguerre–Gaussian beams on the higher-order Poincaré sphere are investigated in the nonparaxial regime. The evolution properties of the propagating and evanescent waves are closely related to the topological charge, the radial order, the ellipticity angle, and the waist width. The influences of the evanescent waves on the intensity, the spin and orbital angular momenta of the vector vortex beams are discussed in detail.
{"title":"Effect of evanescent wave on vector vortex beams on higher-order Poincaré sphere","authors":"Xinting Jia, Jing Jia","doi":"10.1088/1555-6611/ad71af","DOIUrl":"https://doi.org/10.1088/1555-6611/ad71af","url":null,"abstract":"Based on the vector angular spectrum representation, the contributions of the propagating and evanescent waves to the vector vortex Laguerre–Gaussian beams on the higher-order Poincaré sphere are investigated in the nonparaxial regime. The evolution properties of the propagating and evanescent waves are closely related to the topological charge, the radial order, the ellipticity angle, and the waist width. The influences of the evanescent waves on the intensity, the spin and orbital angular momenta of the vector vortex beams are discussed in detail.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"11 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-29DOI: 10.1088/1555-6611/ad71b1
Qiong Wang, Zhi He
The dynamic behavior of the relative entropy of coherence for a two-level system is systematically investigated in different regimes. We derive the exact expressions of relative entropy quantifying coherence for an exactly solving model consisting of single qubit interacting with independent structured reservoir, show explicitly that the weak measurement (WM) and quantum measurement reversal (QMR) operation indeed help for protecting the coherence. In addition, the freezing phenomenon of the coherence can be detected by using the optimal WM and QMR operation.
{"title":"Protecting coherence by weak measurement and quantum measurement reversal","authors":"Qiong Wang, Zhi He","doi":"10.1088/1555-6611/ad71b1","DOIUrl":"https://doi.org/10.1088/1555-6611/ad71b1","url":null,"abstract":"The dynamic behavior of the relative entropy of coherence for a two-level system is systematically investigated in different regimes. We derive the exact expressions of relative entropy quantifying coherence for an exactly solving model consisting of single qubit interacting with independent structured reservoir, show explicitly that the weak measurement (WM) and quantum measurement reversal (QMR) operation indeed help for protecting the coherence. In addition, the freezing phenomenon of the coherence can be detected by using the optimal WM and QMR operation.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"22 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-22DOI: 10.1088/1555-6611/ad6d54
V K Pustovalov, L G Astafyeva, W Fritzsche
A theoretical study of the optical properties of new NiO-Ni nanoshells (NSs) with different radii and shell thicknesses dispersed in silica was carried out in a wide range of ultraviolet, visible and infrared optical spectra from 200 nm to 5000 nm. The established remarkable tunability of absorption (extinction) spectrum and the high absorption properties of NiO-Ni NSs in the presented spectral ranges are very interesting for use in various photothermal and laser high-temperature technologies, including applications in light-to-heat conversion, solar thermal energy, laser nanomedicine and others.
{"title":"Significant tunability and absorptivity of plasmonic NiO-Ni nanoshells dispersed in silica in visible and infrared optical spectra","authors":"V K Pustovalov, L G Astafyeva, W Fritzsche","doi":"10.1088/1555-6611/ad6d54","DOIUrl":"https://doi.org/10.1088/1555-6611/ad6d54","url":null,"abstract":"A theoretical study of the optical properties of new NiO-Ni nanoshells (NSs) with different radii and shell thicknesses dispersed <italic toggle=\"yes\">in silica</italic> was carried out in a wide range of ultraviolet, visible and infrared optical spectra from 200 nm to 5000 nm. The established remarkable tunability of absorption (extinction) spectrum and the high absorption properties of NiO-Ni NSs in the presented spectral ranges are very interesting for use in various photothermal and laser high-temperature technologies, including applications in light-to-heat conversion, solar thermal energy, laser nanomedicine and others.","PeriodicalId":17976,"journal":{"name":"Laser Physics","volume":"24 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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