5 papers
Squeezed Displaced Schrödinger-cat state as a signature of the PT-symmetry phase transition
Yuetao Chen, Shoukang Chang, Shaoyan Gao
Parity-time (PT ) symmetric systems are gain-loss systems whose dynamics are governed by non-Hermitian Hamiltonians with degeneracies at exceptional-points (EPs) and has been studi…
Evaluating the quantum optimal biased bound in a unitary evolution process
Shoukang Chang, Wei Ye, Xuan Rao +6
Seeking the available precision limit of unknown parameters is a significant task in quantum parameter estimation. One often resorts to the widely utilized quantum Cramer-Rao bound…
Chiral cavity-magnonic system for the unidirectional emission of a tunable squeezed microwave field
Ji-kun Xie, Sheng-li Ma, Ya-long Ren +2
Unidirectional photon emission is crucial for constructing quantum networks and realizing scalable quantum information processing. In the present work an efficient scheme is develo…
Global quantum thermometry based on the optimal biased bound
Shoukang Chang, Wei Ye, Xuan Rao +6
Thermometry is a fundamental parameter estimation problem which is crucial in the development process of natural sciences. One way to solve this problem is to the extensive used lo…
Investigation of the laser-induced lineshape change in attosecond transient absorption spectra by employing a time-dependent generalized Floquet approach
Di Zhao, Chen-Wei Jiang, Ai-Ping Fang +2
We introduce a time-dependent generalized Floquet (TDGF) approach to calculate attosecond transient absorption spectra of helium atoms subjected to the combination of an attosecond…