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From the 6 of 62 papers with an AI index.

most citedPASPT2: a size-extensive and size-consistent partial-active-space multi-state multi-reference second-order perturbation theory for strongly correlated electrons

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quant-ph2026

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…

quant-ph2026

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…

quant-ph2026

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…

quant-ph2026

Sub-Bath Cooling in Bosonic Systems: Gaussian Constraints and Non-Gaussian Enhancements

Wen-Han Png, Xueyuan Hu, Valerio Scarani

Cooling quantum systems with finite resources is a central task in quantum technologies and has been extensively explored in discrete-variable settings. As continuous-variable (CV)…

quant-ph2026

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…

quant-ph2026

Survival of Hermitian Criticality in the Non-Hermitian Framework

Fei Wang, Guoying Liang, Zecheng Zhao +3

In this work, we investigate many-body phase transitions in a one-dimensional anisotropic XY model subject to a complex-valued transverse field. Within the biorthogonal framework,…