Pub Date : 2023-08-24DOI: 10.1103/PhysRevA.108.022420
Meng-Wei Chen, Owen Young, M. Schlosshauer, M. Beck
We experimentally demonstrate protective measurements by weakly coupling the polarization of a single-photon-level field to a measurement pointer that corresponds to the arrival time of the photon. By using an optical loop, we implement a variable, controlled number (1-9) of protection and measurement stages. We demonstrate the measurement of expectation values of photon polarization by measuring arrival times while simultaneously protecting the polarization state. No knowledge of the initial photon state is required or available in our experiment, demonstrating that protective measurements provide a genuine information gain that cannot simply be reduced to a priori information about the protection procedure.
{"title":"Protective measurements of photon polarization using a temporal pointer","authors":"Meng-Wei Chen, Owen Young, M. Schlosshauer, M. Beck","doi":"10.1103/PhysRevA.108.022420","DOIUrl":"https://doi.org/10.1103/PhysRevA.108.022420","url":null,"abstract":"We experimentally demonstrate protective measurements by weakly coupling the polarization of a single-photon-level field to a measurement pointer that corresponds to the arrival time of the photon. By using an optical loop, we implement a variable, controlled number (1-9) of protection and measurement stages. We demonstrate the measurement of expectation values of photon polarization by measuring arrival times while simultaneously protecting the polarization state. No knowledge of the initial photon state is required or available in our experiment, demonstrating that protective measurements provide a genuine information gain that cannot simply be reduced to a priori information about the protection procedure.","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47648032","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 : 2023-08-24DOI: 10.1103/physreva.108.029902
Scott M. Cohen
{"title":"Erratum: Local approximation for perfect discrimination of quantum states [Phys. Rev. A \u0000107\u0000, 012401 (2023)]","authors":"Scott M. Cohen","doi":"10.1103/physreva.108.029902","DOIUrl":"https://doi.org/10.1103/physreva.108.029902","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42894331","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 : 2023-08-23DOI: 10.1103/physreva.108.023723
Gaoke Hu, Z. Lü, Haiqing Lin, Hang Zheng
{"title":"Hopping-induced quantum phase transition in the Ising-Rabi lattice model","authors":"Gaoke Hu, Z. Lü, Haiqing Lin, Hang Zheng","doi":"10.1103/physreva.108.023723","DOIUrl":"https://doi.org/10.1103/physreva.108.023723","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61818762","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 : 2023-08-23DOI: 10.1103/physreva.108.022419
Qizhi Cai, Boyu Fan, Yunru Fan, G. Deng, You Wang, Haizhi Song, Guang-can Guo, Qiang Zhou
{"title":"Entangling optical and mechanical cavity modes in an optomechanical crystal nanobeam","authors":"Qizhi Cai, Boyu Fan, Yunru Fan, G. Deng, You Wang, Haizhi Song, Guang-can Guo, Qiang Zhou","doi":"10.1103/physreva.108.022419","DOIUrl":"https://doi.org/10.1103/physreva.108.022419","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48973952","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 : 2023-08-23DOI: 10.1103/physreva.108.022812
I. López-García, A. Macías, S. López-Rosa, J. C. Angulo
{"title":"Information-theoretical analysis of Dirac and nonrelativistic quantum oscillators","authors":"I. López-García, A. Macías, S. López-Rosa, J. C. Angulo","doi":"10.1103/physreva.108.022812","DOIUrl":"https://doi.org/10.1103/physreva.108.022812","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42313910","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 : 2023-08-22DOI: 10.1103/physreva.108.022613
Yong J Chen, Jin-Wei Gao, Jin-Xuan Han, Zhonghui Yuan, Ruobing Li, Yongyuan Jiang, Jie Song
This study investigates the use of orbital angular momentum (OAM) to enhance phase estimation in Mach-Zehnder interferometers (MZIs) by employing non-Gaussian states as input resources in the presence of noise. Our research demonstrates that non-Gaussian states, particularly the photonsubtraction-then-addition (PSA) state, exhibit the best sensitivity in the presence of symmetric noise. Additionally, higher-order of Bose operator of non-Gaussian states provide better sensitivity for symmetric noise. OAM can mitigate the deterioration of noise, making it possible to estimate small phase shifts theta close to 0. OAM enhances the resolution and sensitivity of all input states and mitigating the deterioration caused by photon loss. Additionally, OAM enhances the resolution and sensitivity of all input states, enabling the sensitivity to approach the 1/N limit even under significant photon loss (e.g.,50% symmetric photon loss). These results hold promise for enhancing the sensitivity and robustness of quantum metrology, particularly in the presence of significant photon loss.
{"title":"Orbital-angular-momentum-enhanced phase estimation using non-Gaussian states with photon loss","authors":"Yong J Chen, Jin-Wei Gao, Jin-Xuan Han, Zhonghui Yuan, Ruobing Li, Yongyuan Jiang, Jie Song","doi":"10.1103/physreva.108.022613","DOIUrl":"https://doi.org/10.1103/physreva.108.022613","url":null,"abstract":"This study investigates the use of orbital angular momentum (OAM) to enhance phase estimation in Mach-Zehnder interferometers (MZIs) by employing non-Gaussian states as input resources in the presence of noise. Our research demonstrates that non-Gaussian states, particularly the photonsubtraction-then-addition (PSA) state, exhibit the best sensitivity in the presence of symmetric noise. Additionally, higher-order of Bose operator of non-Gaussian states provide better sensitivity for symmetric noise. OAM can mitigate the deterioration of noise, making it possible to estimate small phase shifts theta close to 0. OAM enhances the resolution and sensitivity of all input states and mitigating the deterioration caused by photon loss. Additionally, OAM enhances the resolution and sensitivity of all input states, enabling the sensitivity to approach the 1/N limit even under significant photon loss (e.g.,50% symmetric photon loss). These results hold promise for enhancing the sensitivity and robustness of quantum metrology, particularly in the presence of significant photon loss.","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44238579","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 : 2023-08-22DOI: 10.1103/physreva.108.022811
N. Hölsch, I. Doran, F. Merkt, J. Hussels, C.-F. Cheng, E. Salumbides, H. Bethlem, K. Eikema, M. Beyer, W. Ubachs, C. Jungen
{"title":"Ionization and dissociation energies of HD and dipole-induced g/u-symmetry breaking","authors":"N. Hölsch, I. Doran, F. Merkt, J. Hussels, C.-F. Cheng, E. Salumbides, H. Bethlem, K. Eikema, M. Beyer, W. Ubachs, C. Jungen","doi":"10.1103/physreva.108.022811","DOIUrl":"https://doi.org/10.1103/physreva.108.022811","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43102091","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 : 2023-08-22DOI: 10.1103/physreva.108.022810
S. Kučas, V. Jonauskas
{"title":"Time evolution of the Auger cascade for Kr 3d95p","authors":"S. Kučas, V. Jonauskas","doi":"10.1103/physreva.108.022810","DOIUrl":"https://doi.org/10.1103/physreva.108.022810","url":null,"abstract":"","PeriodicalId":48702,"journal":{"name":"Physical Review a","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49654696","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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