Universal quantum simulation of single-qubit nonunitary operators using duality quantum algorithm

C Zheng - Scientific reports, 2021 - nature.com
Quantum information processing enhances human's power to simulate nature in quantum
level and solve complex problem efficiently. During the process, a series of operators is …

Experimental demonstration of coherence flow in PT- and anti-PT-symmetric systems

YL Fang, JL Zhao, Y Zhang, DX Chen, QC Wu… - Communications …, 2021 - nature.com
Non-Hermitian parity-time (PT) and anti-parity-time (APT)-symmetric systems exhibit novel
quantum properties and have attracted increasing interest. Although many counterintuitive …

Entanglement dynamics in anti--symmetric systems

YL Fang, JL Zhao, DX Chen, YH Zhou, Y Zhang… - Physical Review …, 2022 - APS
In the past years, many efforts have been made to study various noteworthy phenomena in
both parity-time (PT) and anti-parity-time (APT) symmetric systems. However, entanglement …

Observation of information flow in the anti-𝒫𝒯-symmetric system with nuclear spins

J Wen, G Qin, C Zheng, S Wei, X Kong, T **n… - npj Quantum …, 2020 - nature.com
The recently theoretical and experimental researches on PT-symmetric system have
attracted unprecedented attention because of the various interesting features and potential …

Unidirectional reflectionless anti-parity-time-symmetric photonic lattices of thermal atoms

Y He, J Wu, Y Hu, JX Zhang, SY Zhu - Physical Review A, 2022 - APS
We experimentally demonstrate an anti-parity-time (anti-PT)-symmetric photonic lattice in
thermal cesium atoms driven by two standing-wave laser fields. Such a lattice possesses …

Level attraction and symmetry in indirectly coupled microresonators

ZH Peng, CX Jia, YQ Zhang, JB Yuan, LM Kuang - Physical Review A, 2020 - APS
Benefiting from the tunability of their phase delay and gain, we show the possibility of
realizing level attraction, parity-time (PT)-, and anti-PT-symmetric photonic structures with …

Quantum Fisher information perspective on sensing in anti-PT symmetric systems

J Wang, D Mukhopadhyay, GS Agarwal - Physical Review Research, 2022 - APS
The efficient sensing of weak environmental perturbations via special degeneracies called
exceptional points in non-Hermitian systems has attracted enormous attention in the last few …

Lopsided diffractions of distinct symmetries in two-dimensional non-Hermitian optical gratings

YM Liu, F Gao, JH Wu, M Artoni, GC La Rocca - Physical Review A, 2019 - APS
Fraunhofer light diffraction across a thin two-dimensional lattice of cold atoms subject to
transverse hybrid modulations of two standing-wave crossed pump fields is seen to yield …

Anti--symmetric qubit: Decoherence and entanglement entropy

J Cen, A Saxena - Physical Review A, 2022 - APS
We investigate the dynamics of a general two-level based anti-parity-time (anti-PT)-
symmetric qubit and study its decoherence as well as entanglement entropy properties. We …

Coherent control of nonreciprocal reflections with spatial modulation coupling in parity-time symmetric atomic lattice

YL Chaung, A Shamsi, M Abbas, Ziauddin - Optics Express, 2020 - opg.optica.org
A collection of cold rubidium atoms in three-level configuration trapped in one dimensional
(1D) optical lattice is revisited. The trapped atoms are considered in the Gaussian density …