5 papers
Autonomous Quantum Heat Engine Enabled by Molecular Optomechanics and Hysteresis Switching
Baiqiang Zhu, Pierre Meystre, Weiping Zhang +1
By integrating molecular optomechanics with molecular switches, we propose a scheme for a molecular quantum heat engine that operates autonomously through hysteretic feedback witho…
Enhanced Quantum Metrology with Non-Phase-Covariant Noise
Jia-Xin Peng, Baiqiang Zhu, Weiping Zhang +1
The detrimental impact of noise on sensing performance in quantum metrology has been widely recognized by researchers in the field. However, there are no explicit fundamental laws…
Estimation theory of photon-magnon coupling strength in a driven-dissipative double-cavity-magnon system
Jia-Xin Peng, Baiqiang Zhu, Weiping Zhang +1
Cavity-magnon systems are emerging as a fruitful architecture for the integration of quantum technologies and spintronic technologies, where magnons are coupled to microwave photon…
Dissipative quantum Fisher information for a general Liouvillian parameterized process
Jia-Xin Peng, Baiqiang Zhu, Weiping Zhang +1
The dissipative quantum Fisher information (DQFI) for a dynamic map with a general parameter in an open quantum system is investigated, which can be regarded as an analog of the qu…
Optomechanical preparation of photon number-squeezed states with a pair of thermal reservoirs of opposite temperatures
Baiqiang Zhu, Keye Zhang, Weiping Zhang
Photon number-squeezed states are of significant value in fundamental quantum research and have a wide range of applications in quantum metrology. Most of their preparation mechani…