113 citations · 123 across the 7 of their papers we have counts for
7 papers
Fisher-Information Recovery in Superconducting-Qubit Magnetometry with Squeezed-Microwave Readout
M. -R. Yun, Y. -J. Qu, Zheng Shan +3
The performance of superconducting-qubit magnetometers depends not only on magnetic-field encoding during Ramsey interrogation, but also on how efficiently the encoded information…
Gain on ground state of quantum system for truly symmetry
Bing-Bing Liu, Shi-Lei Su
For a truly -symmetric quantum system, the conventional non-Hermitian Hamiltonian is , where and are re…
Beyond the Carnot Limit in the Internal Cycles of a Quantum Heat Engine under Finite Heat Reservoirs
L. -L. Yan, M. -R. Yun, M. Li +4
We investigate, in an analytical fashion, quantum Carnot cycles of a microscopic heat engine coupled to two nite heat reservoirs, whose internal cycles could own higher e ciency th…
Experimental Verification of Demon-Involved Fluctuation Theorems
L. -L. Yan, J. -T. Bu, Q. Zeng +8
The limit of energy saving in the control of small systems has recently attracted much interest due to the concept refinement of the Maxwell demon. Inspired by a newly proposed set…
Using PT-symmetric Qubits to Break the Tradeoff Between Fidelity and the Degree of Quantum Entanglement
B. -B. Liu, Shi-Lei Su, Y. -L. Zuo +4
A noteworthy discovery is that the minimal evolution time is smaller for parity-time () symmetric systems compared to Hermitian setups. Moreover, there is a significa…
One-step implementation of nonadiabatic geometric fSim gate in superconducting circuits
M. -R. Yun, Zheng Shan, Li-Li Sun +3
Due to its significant application in reducing algorithm depth, fSim gates have attracted a lot of attention. However, during the implementation of quantum gates, fluctuations in c…
Dynamical Control of Quantum Heat Engines Using Exceptional Points
J. -W. Zhang, J. -Q. Zhang, G. -Y. Ding +11
A quantum thermal machine is an open quantum system coupled to hot and cold thermal baths. Thus, its dynamics can be well understood using the concepts and tools from non-Hermitian…