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6 papers · 2 filters
A hybrid quantum interferometer bridging Hong-Ou-Mandel and N00N-state interference
Zi-Qi Zeng, Samuel Corona-Aquino, Tao Xie +13
Hong-Ou-Mandel (HOM) interference offers robustness in high-noise environments due to its phase-insensitive nature, while N00N-state interference provides enhanced phase sensitivit…
Tabletop reversibility of phase-covariant operations
Fangzhen Chen, Xueyuan Hu
Irreversibility and time-translation symmetry are both fundamental in open quantum dynamics, and it is of great importance to study the interplay between them. In this paper, we st…
Photon counting statistics in the presence of spectral diffusion induced by nonequilibrium environmental fluctuations
Xiangji Cai, Yonggang Peng, Yujun Zheng
We theoretically investigate the statistical properties of photon emission of a driven two-level single-molecule system undergoing spectral diffusion induced by nonequilibrium envi…
Incoherent Operations Enable State Transformations Impossible under Dephasing-covariant Incoherent Operations
C. L. Liu
We show that incoherent operations (IOs) can achieve the state transformations that are forbidden under dephasing-covariant incoherent operations (DIOs), thereby resolving the open…
Superiority of Krylov shadow tomography in estimating quantum Fisher information: From bounds to exactness
Yuan-Hao Wang, Da-Jian Zhang
Estimating the quantum Fisher information (QFI) is a crucial yet challenging task with widespread applications across quantum science and technologies. The recently proposed Krylov…
Gaussian time-translation covariant operations: structure, implementation, and thermodynamics
Xueyuan Hu, Lea Lautenbacher, Giovanni Spaventa +3
Time-translation symmetry strongly constrains physical dynamics, yet systematic characterization for continuous-variable systems lags behind its discrete-variable counterpart. We c…