113 citations · 422 across the 18 of their papers we have counts for
18 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…
Experimental Demonstration of a Brachistochrone Nonadiabatic Holonomic Quantum-Gate Scheme in a Trapped Ion
Xi Wang, Hui Ren, L. -N. Sun +5
Nonadiabatic holonomic quantum computation (NHQC) offers intrinsic resilience to certain control imperfections. However, conventional nonadiabatic holonomic protocols are constrain…
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…
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…
Enhancement of Quantum Sensing in a Cavity Optomechanical System around Quantum Critical Point
Shao-Bo Tang, Hao Qin, D. -Y. Wang +4
The precision of quantum sensing could be improved by exploiting quantum phase transitions, where the physical quantity tends to diverge when the system approaches the quantum crit…
Quantum computation in silicon-vacancy centers based on nonadiabatic geometric gates protected by dynamical decoupling
M. -R. Yun, Jin-Lei Wu, L. -L. Yan +3
Due to strong zero-phonon line emission, narrow inhomogeneous broadening, and stable optical transition frequencies, the quantum system consisting of negatively charged silicon-vac…
Rabi-error and Blockade-error-resilient All-Geometric Rydberg Quantum Gates
S. -L. Su, Li-Na Sun, B. -J. Liu +4
We propose a nontrivial two-qubit gate scheme in which Rydberg atoms are subject to designed pulses resulting from geometric evolution processes. By utilizing a hybrid robust non-a…
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…
Thermodynamics and Fluctuations in Quantum Heat Engines under Reservoir Squeezing
Yang Xiao, Dehua Liu, Jizhou He +3
We investigate the thermodynamics and fluctuations of a finite-time quantum Otto engine alternatively driven by a hot squeezed and a cold thermal reservoir. We show that reservoir…
Single-atom verification of the noise-resilient and fast characteristics of universal nonadiabatic noncyclic geometric quantum gates
J. W. Zhang, L. -L. Yan, J. C. Li +6
Quantum gates induced by geometric phases are intrinsically robust against noise due to their global properties of the evolution paths. Compared to conventional nonadiabatic geomet…
Optimized Geometric Quantum Computation with mesoscopic ensemble of Rydberg Atoms
Chen-Yue Guo, L. -L. Yan, Shou Zhang +2
We propose a nonadiabatic non-Abelian geometric quantum operation scheme to realize universal quantum computation with mesoscopic Rydberg atoms. A single control atom entangles a m…
Discovery of state transition behaviors in PSR J1124--5916
M. Y. Ge, J. P. Yuan, F. J. Lu +7
With the twelve-year long observations by {\sl Fermi}-LAT, we discover two pairs of spin-down state transitions of PSR J1124--5916, making it the second young pulsar detected to ha…
Single-Atom Verification of the Information-Theoretical Bound of Irreversibility at the Quantum Level
J. W. Zhang, K. Rehan, M. Li +6
Quantitative measure of disorder or randomness based on the entropy production characterizes thermodynamical irreversibility, which is relevant to the conventional second law of th…
Timing analysis of Swift J1658.2-4242's outburst in 2018 with Insight-HXMT, NICER and AstroSat
Guangcheng Xiao, Yu Lu, Xiang Ma +18
We present the observational results from a detailed timing analysis of the black hole candidate Swift J1658.2-4242 during its 2018 outburst with the observations of Hard X-ray Mod…
Single-qubit measurement of Heisenberg uncertainty lower bounds for three incompatible observables
K. Rehan, T. P. Xiong, L. -L. Yan +6
Being one of the centroidal concepts in quantum theory, the fundamental constraint imposed by Heisenberg uncertainty relations has always been a subject of immense attention and ch…
Evolution of the X-ray Profile of the Crab Pulsar
M. Y. Ge, L. L. Yan, F. J. Lu +5
Using the archive data from the Rossi X-ray Timing Explorer ({\sl RXTE}), we have studied the evolution of the X-ray profile of the Crab pulsar in a time span of 11 years. The X-ra…
Experimental verification of a Jarzynski-related information-theoretic equality using a single trapped ion
T. P. Xiong, L. L. Yan, F. Zhou +7
Most non-equilibrium processes in thermodynamics are quantified only by inequalities, however the Jarzynski relation presents a remarkably simple and general equality relating non-…
Exploring the quantum critical behaviour in a driven Tavis-Cummings circuit
M. Feng, Y. P. Zhong, T. Liu +4
Quantum phase transitions play an important role in many-body systems and have been a research focus in conventional condensed matter physics over the past few decades. Artificial…