3 papers
quant-ph2026
Recovering Readout-Limited Fisher Information in Superconducting-Qubit Magnetometry with Squeezed Microwaves
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…
cond-mat.stat-mech2024
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…
quant-ph2024
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…