Pub Date : 2024-09-04DOI: 10.1103/physrevapplied.22.034008
Leonid Vidro, Liran Shirizly, Naftali Kirsh, Nadav Katz, Hagai S. Eisenberg
Quantum metrology has been shown to surpass classical limits of correlation, resolution, and sensitivity. It has been introduced to interferometric radar schemes, with intriguing preliminary results. Even quantum-inspired detection of classical signals may be advantageous in specific use cases. Following ideas demonstrated so far only in the optical domain, where practically no thermal background photons exist, we realize room-temperature microwave frequency super-resolved phase measurements with trillions of photons, while saturating the Cramer-Rao bound of sensitivity. We experimentally estimate the interferometric phase using the expectation value of the parity operator by two methods. We achieve superresolution up to 1200 times better than the wavelength with 25-ns integration time and 56-dB SNR.
{"title":"Quantum-inspired microwave phase superresolution at room temperature","authors":"Leonid Vidro, Liran Shirizly, Naftali Kirsh, Nadav Katz, Hagai S. Eisenberg","doi":"10.1103/physrevapplied.22.034008","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034008","url":null,"abstract":"Quantum metrology has been shown to surpass classical limits of correlation, resolution, and sensitivity. It has been introduced to interferometric radar schemes, with intriguing preliminary results. Even quantum-inspired detection of classical signals may be advantageous in specific use cases. Following ideas demonstrated so far only in the optical domain, where practically no thermal background photons exist, we realize room-temperature microwave frequency super-resolved phase measurements with trillions of photons, while saturating the Cramer-Rao bound of sensitivity. We experimentally estimate the interferometric phase using the expectation value of the parity operator by two methods. We achieve superresolution up to 1200 times better than the wavelength with 25-ns integration time and 56-dB SNR.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"24 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 10.1103/physrevapplied.22.034010
Dongwei Wang, Binghao Zhao, Yu Wei, Jun Yang, Gengkai Hu
Mitigation of fluid-borne noise in hydraulic power systems is of paramount importance for both machine reliability and human comfort. One typical approach involves using compliant inline hydraulic silencers to lower the sound speed within devices, e.g., pressurized bladders or syntactic foams. However, the exploration of innovative compliant materials for silencer designs has been limited; this is largely due to the absence of a comprehensive model that can accommodate a large range of anisotropic materials to evaluate the performance of hydraulic silencers. In this work, we develop a general analytical model for silencer design that incorporates anisotropic reflective materials. The model enables us to identify optimized solutions within a broader material spectrum, tailored to meet pressure-resistance requirements. Building upon these insights, we design and fabricate an anisotropic compliant metallic lattice with low impedance and integrate it into a hydraulic silencer as the reflective material. Experimental results demonstrate that this silencer can achieve an average sound-transmission loss of 21 dB across a frequency range of 100 Hz to 2 kHz, in good agreement with predictions from our proposed model. This work paves the way for selecting and designing innovative materials for the mitigation of hydraulic noise.
{"title":"Material design for hydraulic silencers","authors":"Dongwei Wang, Binghao Zhao, Yu Wei, Jun Yang, Gengkai Hu","doi":"10.1103/physrevapplied.22.034010","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034010","url":null,"abstract":"Mitigation of fluid-borne noise in hydraulic power systems is of paramount importance for both machine reliability and human comfort. One typical approach involves using compliant inline hydraulic silencers to lower the sound speed within devices, e.g., pressurized bladders or syntactic foams. However, the exploration of innovative compliant materials for silencer designs has been limited; this is largely due to the absence of a comprehensive model that can accommodate a large range of anisotropic materials to evaluate the performance of hydraulic silencers. In this work, we develop a general analytical model for silencer design that incorporates anisotropic reflective materials. The model enables us to identify optimized solutions within a broader material spectrum, tailored to meet pressure-resistance requirements. Building upon these insights, we design and fabricate an anisotropic compliant metallic lattice with low impedance and integrate it into a hydraulic silencer as the reflective material. Experimental results demonstrate that this silencer can achieve an average sound-transmission loss of 21 dB across a frequency range of 100 Hz to 2 kHz, in good agreement with predictions from our proposed model. This work paves the way for selecting and designing innovative materials for the mitigation of hydraulic noise.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"5 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 10.1103/physrevapplied.22.034007
Ziwen Huang, Taeyoon Kim, Tanay Roy, Yao Lu, Alexander Romanenko, Shaojiang Zhu, Anna Grassellino
Engineering high-fidelity two-qubit gates is an indispensable step toward practical quantum computing. For superconducting quantum platforms, one important setback is the stray interaction between qubits, which causes significant coherent errors. For transmon qubits, protocols for mitigating such errors usually involve fine-tuning the hardware parameters or introducing usually noisy flux-tunable couplers. In this work, we propose a simple scheme to cancel these stray interactions. The coupler used for such cancelation is a driven high-coherence resonator, where the amplitude and frequency of the drive serve as control knobs. Through the resonator-induced-phase interaction, the static coupling can be entirely neutralized. We numerically show that such a scheme can enable short and high-fidelity entangling gates, including cross-resonance controlled-not (cnot) gates within 40 ns and adiabatic controlled- gates within 140 ns. Our architecture is not only -free, but also contains no extra noisy components, such that it preserves the coherence times of fixed-frequency transmon qubits. With the state-of-the-art coherence times, the error of our cross-resonance cnot gate can be reduced to below .
{"title":"Fast ZZ-free entangling gates for superconducting qubits assisted by a driven resonator","authors":"Ziwen Huang, Taeyoon Kim, Tanay Roy, Yao Lu, Alexander Romanenko, Shaojiang Zhu, Anna Grassellino","doi":"10.1103/physrevapplied.22.034007","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034007","url":null,"abstract":"Engineering high-fidelity two-qubit gates is an indispensable step toward practical quantum computing. For superconducting quantum platforms, one important setback is the stray interaction between qubits, which causes significant coherent errors. For transmon qubits, protocols for mitigating such errors usually involve fine-tuning the hardware parameters or introducing usually noisy flux-tunable couplers. In this work, we propose a simple scheme to cancel these stray interactions. The coupler used for such cancelation is a driven high-coherence resonator, where the amplitude and frequency of the drive serve as control knobs. Through the resonator-induced-phase interaction, the static <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi><mi>Z</mi></math> coupling can be entirely neutralized. We numerically show that such a scheme can enable short and high-fidelity entangling gates, including cross-resonance controlled-<span>not</span> (<span>cnot</span>) gates within 40 ns and adiabatic controlled-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi></math> gates within 140 ns. Our architecture is not only <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>Z</mi><mi>Z</mi></math>-free, but also contains no extra noisy components, such that it preserves the coherence times of fixed-frequency transmon qubits. With the state-of-the-art coherence times, the error of our cross-resonance <span>cnot</span> gate can be reduced to below <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mn>10</mn><mrow><mo>−</mo><mn>4</mn></mrow></msup></math>.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"32 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 10.1103/physrevapplied.22.034011
G. Lioliou, A. Charman, O. Roche i Morgó, M. Endrizzi, S. Arridge, D. Bate, A. Olivo, C. Hagen
Cycloidal computed tomography, by which a lateral sample translation and rotation are combined, is a fully-fly-scan-compatible acquisition scheme for micro-computed-tomography systems using amplitude-modulated beams. Such systems have gained popularity, as they enable x-ray phase-contrast imaging (XPCI) and aperture-driven spatial resolution. The former provides superior contrast for weakly attenuating samples, while the latter allows the resolution of a micro-computed-tomography system to be increased beyond the conventional limit dictated by the source and detector. Such systems initially required time-inefficient step-and-shoot acquisitions, a limitation that has been removed by the development of cycloidal computed tomography. Here we derive cycloidal sampling conditions that are optimal in the sense of the Nyquist-Shannon theorem. Their availability enables the acquisition of well-sampled (i.e., high-resolution) XPCI images in a time-efficient manner, a long-sought outcome with relevance to laboratory implementations, where scan times have traditionally been long, and to synchrotron implementations, where the next frontier is to achieve high-speed (e.g., dynamic) imaging. We make no assumptions on the type of x-ray source used, but demonstrate the optimal conditions with a rotating-anode x-ray tube.
环形计算机断层扫描将横向样品平移和旋转结合在一起，是使用调幅光束的显微计算机断层扫描系统的一种完全兼容飞行扫描的采集方案。由于这种系统能实现 X 射线相位对比成像（XPCI）和孔径驱动的空间分辨率，因此越来越受欢迎。前者可为弱衰减样本提供卓越的对比度，后者则可提高微型计算机断层成像系统的分辨率，使其超越光源和探测器所决定的传统限制。这类系统最初需要耗时的步进式采集，而摆线计算机断层扫描技术的发展消除了这一限制。在这里，我们推导出了从奈奎斯特-香农定理意义上来说最优的摆线取样条件。有了这些条件，就能以省时省力的方式获取采样良好（即高分辨率）的 XPCI 图像，这是人们长期以来一直追求的结果，与实验室实施和同步加速器实施都息息相关，前者的扫描时间历来较长，而后者的下一个前沿则是实现高速（如动态）成像。我们对所使用的 X 射线源类型不做任何假设，但演示了旋转阳极 X 射线管的最佳条件。
{"title":"Nyquist-compliant cycloidal computed tomography","authors":"G. Lioliou, A. Charman, O. Roche i Morgó, M. Endrizzi, S. Arridge, D. Bate, A. Olivo, C. Hagen","doi":"10.1103/physrevapplied.22.034011","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034011","url":null,"abstract":"Cycloidal computed tomography, by which a lateral sample translation and rotation are combined, is a fully-fly-scan-compatible acquisition scheme for micro-computed-tomography systems using amplitude-modulated beams. Such systems have gained popularity, as they enable x-ray phase-contrast imaging (XPCI) and aperture-driven spatial resolution. The former provides superior contrast for weakly attenuating samples, while the latter allows the resolution of a micro-computed-tomography system to be increased beyond the conventional limit dictated by the source and detector. Such systems initially required time-inefficient step-and-shoot acquisitions, a limitation that has been removed by the development of cycloidal computed tomography. Here we derive cycloidal sampling conditions that are optimal in the sense of the Nyquist-Shannon theorem. Their availability enables the acquisition of well-sampled (i.e., high-resolution) XPCI images in a time-efficient manner, a long-sought outcome with relevance to laboratory implementations, where scan times have traditionally been long, and to synchrotron implementations, where the next frontier is to achieve high-speed (e.g., dynamic) imaging. We make no assumptions on the type of x-ray source used, but demonstrate the optimal conditions with a rotating-anode x-ray tube.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"45 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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: 10.1103/physrevapplied.22.034009
Yuzan Xiong, Andrew Christy, Zixin Yan, Amin Pishehvar, Muntasir Mahdi, Junming Wu, James F. Cahoon, Binbin Yang, Michael C. Hamilton, Xufeng Zhang, Wei Zhang
Hybrid magnonic systems have emerged as a promising direction for information propagation with preserved coherence. Because of the high tunability of magnons, their interactions with microwave photons can be engineered to probe novel phenomena based on strong photon-magnon coupling. Improving the photon-magnon coupling strength can be done by tuning the structure of microwave resonators to better interact with the magnon counterpart. Planar resonators have been explored due to their potential for on-chip integration, but only common modes from stripline-based resonators have been used. Here, we present a microwave spiral resonator supporting spoof localized surface plasmons (LSPs) and implement it in the investigation of photon-magnon coupling for hybrid magnonic applications. We showcase strong magnon-LSP photon coupling using a ferrimagnetic yttrium iron garnet sphere. We discuss the engineering capacity of the photon mode frequency and spatial field distributions of the spiral resonator via both experiment and simulation. As a result of the localized photon mode profiles, the resulting magnetic field concentrates near the surface dielectrics, giving rise to an enhanced magnetic filling factor. The strong coupling and large engineering space render the spoof LSPs an interesting contender in developing novel hybrid magnonic systems and functionalities.
{"title":"Hybrid magnonics with localized spoof surface-plasmon polaritons","authors":"Yuzan Xiong, Andrew Christy, Zixin Yan, Amin Pishehvar, Muntasir Mahdi, Junming Wu, James F. Cahoon, Binbin Yang, Michael C. Hamilton, Xufeng Zhang, Wei Zhang","doi":"10.1103/physrevapplied.22.034009","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034009","url":null,"abstract":"Hybrid magnonic systems have emerged as a promising direction for information propagation with preserved coherence. Because of the high tunability of magnons, their interactions with microwave photons can be engineered to probe novel phenomena based on strong photon-magnon coupling. Improving the photon-magnon coupling strength can be done by tuning the structure of microwave resonators to better interact with the magnon counterpart. Planar resonators have been explored due to their potential for on-chip integration, but only common modes from stripline-based resonators have been used. Here, we present a microwave spiral resonator supporting spoof localized surface plasmons (LSPs) and implement it in the investigation of photon-magnon coupling for hybrid magnonic applications. We showcase strong magnon-LSP photon coupling using a ferrimagnetic yttrium iron garnet sphere. We discuss the engineering capacity of the photon mode frequency and spatial field distributions of the spiral resonator via both experiment and simulation. As a result of the localized photon mode profiles, the resulting magnetic field concentrates near the surface dielectrics, giving rise to an enhanced magnetic filling factor. The strong coupling and large engineering space render the spoof LSPs an interesting contender in developing novel hybrid magnonic systems and functionalities.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"11 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-09-03DOI: 10.1103/physrevapplied.22.034001
Pegah Azizi, Stefano Gonella
The twisted kagome family comprises a spectrum of configurations that can be realized through the sweep of a single configurational degree of freedom known as a twist angle. Recently, it was shown that certain pairs of configurations along this sweep were linked by duality transformations and displayed matching phonon spectra. In this work, we introduce an intercell-connection system that spreads the lattice in the dimension orthogonal to the tessellation plane. The resulting three-dimensional character of the lattice allows us to sweep the entirety of the twist-angle spectrum, including all the compact configurations featuring overlapping triangles that, in a strictly two-dimensional space, are forbidden. Duality provides precious guidance for interpreting the availability of floppy mechanisms arising in the compact configurations through the one-to-one correspondence with their expanded counterparts. Our focus is on the compact configuration corresponding to a null twist angle, where the lattice degenerates to a chain. From the perspective of the chain, several of the local connections between neighboring lattice cells play the role of nonlocal long-range interactions between cells of the chain. We demonstrate experimentally some peculiar behavior that results from such nonlocality, including a selective activation of floppy sequences that is informed by the direction of loading.
{"title":"Nonlocal twist sequences in floppy kagome chains","authors":"Pegah Azizi, Stefano Gonella","doi":"10.1103/physrevapplied.22.034001","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034001","url":null,"abstract":"The twisted kagome family comprises a spectrum of configurations that can be realized through the sweep of a single configurational degree of freedom known as a twist angle. Recently, it was shown that certain pairs of configurations along this sweep were linked by duality transformations and displayed matching phonon spectra. In this work, we introduce an intercell-connection system that spreads the lattice in the dimension orthogonal to the tessellation plane. The resulting three-dimensional character of the lattice allows us to sweep the entirety of the twist-angle spectrum, including all the compact configurations featuring overlapping triangles that, in a strictly two-dimensional space, are forbidden. Duality provides precious guidance for interpreting the availability of floppy mechanisms arising in the compact configurations through the one-to-one correspondence with their expanded counterparts. Our focus is on the compact configuration corresponding to a null twist angle, where the lattice degenerates to a chain. From the perspective of the chain, several of the local connections between neighboring lattice cells play the role of nonlocal long-range interactions between cells of the chain. We demonstrate experimentally some peculiar behavior that results from such nonlocality, including a selective activation of floppy sequences that is informed by the direction of loading.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"59 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-09-03DOI: 10.1103/physrevapplied.22.034003
Hao-Cheng Weng, Chih-Sung Chuu
Photonics has been a promising platform for implementing quantum technologies owing to its scalability and robustness. In this paper, we demonstrate the encoding of information in 32 time bins or dimensions of a single photon. A practical scheme for manipulating the single photon in high dimensions is experimentally realized to implement a compiled version of Shor’s algorithm on a single photon. Our work demonstrates the powerful information-processing capacity of a high-dimensional quantum system for complex quantum information tasks.
{"title":"Implementation of Shor’s algorithm with a single photon in 32 dimensions","authors":"Hao-Cheng Weng, Chih-Sung Chuu","doi":"10.1103/physrevapplied.22.034003","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034003","url":null,"abstract":"Photonics has been a promising platform for implementing quantum technologies owing to its scalability and robustness. In this paper, we demonstrate the encoding of information in 32 time bins or dimensions of a single photon. A practical scheme for manipulating the single photon in high dimensions is experimentally realized to implement a compiled version of Shor’s algorithm on a single photon. Our work demonstrates the powerful information-processing capacity of a high-dimensional quantum system for complex quantum information tasks.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"1 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-09-03DOI: 10.1103/physrevapplied.22.034002
Takayoshi Fujikawa, Toshihiro Nakanishi
We extend Babinet’s relations, which were originally derived for transmissive metasurfaces, to reflective metasurfaces embedding planar metallic structures in a substrate containing a mirror. To verify the extended Babinet’s relations, we investigate two types of reflective metasurface embedding self-complementary structures, which produce a phase difference between two orthogonal linear polarizations under specific conditions required for the extended Babinet’s relations. Both theoretical and experimental studies demonstrate a metasurface-based half-wave plate with a reflective metasurface including single self-complementary structures in the terahertz regions. In addition, we study a reflective metasurface with embedded self-complementary structures with a phase gradient in reflection, and demonstrate simultaneous implementation of anomalous reflection and polarization conversion with high efficiency.
{"title":"Extension of Babinet’s relations to reflective metasurfaces: Application to the simultaneous control of wavefront and polarization","authors":"Takayoshi Fujikawa, Toshihiro Nakanishi","doi":"10.1103/physrevapplied.22.034002","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034002","url":null,"abstract":"We extend Babinet’s relations, which were originally derived for transmissive metasurfaces, to reflective metasurfaces embedding planar metallic structures in a substrate containing a mirror. To verify the extended Babinet’s relations, we investigate two types of reflective metasurface embedding self-complementary structures, which produce a <math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><mi>π</mi></math> phase difference between two orthogonal linear polarizations under specific conditions required for the extended Babinet’s relations. Both theoretical and experimental studies demonstrate a metasurface-based half-wave plate with a reflective metasurface including single self-complementary structures in the terahertz regions. In addition, we study a reflective metasurface with embedded self-complementary structures with a phase gradient in reflection, and demonstrate simultaneous implementation of anomalous reflection and polarization conversion with high efficiency.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"50 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-09-03DOI: 10.1103/physrevapplied.22.034004
Alberto Ghirri, Claudio Bonizzoni, Maksut Maksutoglu, Marco Affronte
Spin waves in magnetic films are affected by the vicinity to a superconductor. Here we focus on a bilayer stack made of an insulating yttrium iron garnet (YIG) film and a high- (YBCO) superconducting planar resonator and report microwave transmission spectra to monitor the temperature evolution of magnon-photon polaritons. We show that the observed temperature dependence of normal-mode splitting and frequency shift with respect to the unperturbed magnon mode can be ultimately related to the penetration depth of YBCO, as an effect of the interplay between spin waves and Meissner currents.
{"title":"Interplay between magnetism and superconductivity in a hybrid magnon-photon bilayer system","authors":"Alberto Ghirri, Claudio Bonizzoni, Maksut Maksutoglu, Marco Affronte","doi":"10.1103/physrevapplied.22.034004","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.034004","url":null,"abstract":"Spin waves in magnetic films are affected by the vicinity to a superconductor. Here we focus on a bilayer stack made of an insulating yttrium iron garnet (YIG) film and a high-<math display=\"inline\" overflow=\"scroll\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><msub><mi>T</mi><mi>c</mi></msub><mspace width=\"0.2em\"></mspace><mrow><mi>YB</mi><msub><mi mathvariant=\"normal\">a</mi><mn>2</mn></msub><mi mathvariant=\"normal\">C</mi><msub><mi mathvariant=\"normal\">u</mi><mn>3</mn></msub><msub><mi mathvariant=\"normal\">O</mi><mn>7</mn></msub></mrow></math> (YBCO) superconducting planar resonator and report microwave transmission spectra to monitor the temperature evolution of magnon-photon polaritons. We show that the observed temperature dependence of normal-mode splitting and frequency shift with respect to the unperturbed magnon mode can be ultimately related to the penetration depth of YBCO, as an effect of the interplay between spin waves and Meissner currents.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"6 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-09-03DOI: 10.1103/physrevapplied.22.l031001
Viktor Könye, Kyrylo Ochkan, Anastasiia Chyzhykova, Jan Carl Budich, Jeroen van den Brink, Ion Cosma Fulga, Joseph Dufouleur
Measuring large electrical resistances forms an essential part of common applications such as insulation testing but suffers from a fundamental problem: the larger the resistance, the less sensitive is a canonical ohmmeter. Here, we develop a conceptually different electronic sensor by exploiting the topological properties of non-Hermitian matrices, the eigenvalues of which can show an exponential sensitivity to perturbations. The ohmmeter is realized in a multiterminal linear electronic circuit with a non-Hermitian conductance matrix, where the target resistance plays the role of the perturbation. We inject multiple currents and measure a single voltage in order to directly obtain the value of the resistance. The relative accuracy of the device increases exponentially with the number of terminals and for large resistances outperforms a standard measurement by over an order of magnitude. Our work hopefully paves the way toward leveraging non-Hermitian conductance matrices in high-precision sensing.
{"title":"Non-Hermitian topological ohmmeter","authors":"Viktor Könye, Kyrylo Ochkan, Anastasiia Chyzhykova, Jan Carl Budich, Jeroen van den Brink, Ion Cosma Fulga, Joseph Dufouleur","doi":"10.1103/physrevapplied.22.l031001","DOIUrl":"https://doi.org/10.1103/physrevapplied.22.l031001","url":null,"abstract":"Measuring large electrical resistances forms an essential part of common applications such as insulation testing but suffers from a fundamental problem: the larger the resistance, the less sensitive is a canonical ohmmeter. Here, we develop a conceptually different electronic sensor by exploiting the topological properties of non-Hermitian matrices, the eigenvalues of which can show an exponential sensitivity to perturbations. The ohmmeter is realized in a multiterminal linear electronic circuit with a non-Hermitian conductance matrix, where the target resistance plays the role of the perturbation. We inject multiple currents and measure a single voltage in order to directly obtain the value of the resistance. The relative accuracy of the device increases exponentially with the number of terminals and for large resistances outperforms a standard measurement by over an order of magnitude. Our work hopefully paves the way toward leveraging non-Hermitian conductance matrices in high-precision sensing.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"312 1","pages":""},"PeriodicalIF":4.6,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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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