289 citations · 599 across the 14 of their papers we have counts for
14 papers
Accelerating Relaxation Dynamics in Open Quantum System with Liouvillian Skin Effect
Zeqing Wang, Yao Lu, Yi Peng +3
We investigate a non-Hermitian model featuring non-reciprocal gradient hoppings. Through an in-depth analysis of the Liouvillian spectrum and dynamics, we confirm the emergence of…
Beating standard quantum limit via two-axis magnetic susceptibility measurement
Zheng-An Wang, Yi Peng, Dapeng Yu +1
We report a metrology scheme which measures magnetic susceptibility of an atomic spin ensemble along the and direction and produces parameter estimation with precision beat…
Thermal variational quantum simulation on a superconducting quantum processor
Xue-Yi Guo, Shang-Shu Li, Xiao Xiao +10
Solving finite-temperature properties of quantum many-body systems is generally challenging to classical computers due to their high computational complexities. In this article, we…
Feedback Ansatz for Adaptive-Feedback Quantum Metrology Training with Machine Learning
Yi Peng, Heng Fan
It is challenging to construct metrology schemes which harness quantum features such as entanglement and coherence to surpass the standard quantum limit. We propose an ansatz for d…
Achieving Heisenberg limit under General Markov Noise without Ancilla
Yi Peng, Heng Fan
We consider probing qubits infested by general Makovian noise. It can be shown that one can restore Heisenberg limit (HL) via full and fast control without any ancilla, as long as…
Observation of dynamical quantum phase transition by a superconducting qubit simulation
Xue-Yi Guo, Chao Yang, Yu Zeng +7
A dynamical quantum phase transition can occur during time evolution of sudden quenched quantum systems across a phase transition. It corresponds to the nonanalytic behavior at a c…
A Universal Quantum Computing Virtual Machine
Qian-Tan Hong, Zi-Yong Ge, Wen Wang +8
A medium-scale quantum computer with full universal quantum computing capability is necessary for various practical aims and testing applications. Here we report a 34-qubit quantum…
Information Theoretical Analysis of Quantum Metrology
Yi Peng, Heng Fan
We address the framework of analysing quantum metrology in the information-theoretic picture. Firstly we show how to extract the maximum amount of information in general via suitab…
Demonstration of irreversibility and dissipation relation of thermodynamics with a superconducting qubit
Xue-Yi Guo, Yi Peng, Changnan Peng +6
We investigate experimentally the relation between thermodynamical irreversibility and dissipation on a superconducting Xmon qubit. This relation also implies the second law and th…
Perturbative analysis of quantum fluctuation theorems in a driven open system
Yi Peng, Heng Fan
We give a perturbative analysis of Crooks relation and Jarzynski equality in an arbitrary driven quantum system weakly coupled to a heat bath. Invoking no efficient Hamiltonian nor…
Convex roof measures of coherence
Yi Peng, Heng Fan
We provide a general construction of convex roof measures of coherence. This construction is based on arbitrary coherence measures of pure states in the framework of resource theor…
Quantum coherence and geometric quantum discord
Ming-Liang Hu, Xueyuan Hu, Jie-Ci Wang +3
Quantum coherence and quantum correlations are of fundamental and practical significance for the development of quantum mechanics.They are also cornerstones of quantum computation…
Complementary relation of quantum coherence and quantum correlations in multiple measurements
Zeyang Fan, Yi Peng, Yu-Ran Zhang +3
Quantum coherence and quantum correlations lie in the center of quantum information science, since they both are considered as fundamental reasons for significant features of quant…
Maximally coherent states and coherence-preserving operations
Yi Peng, Yong Jiang, Heng Fan
We investigate the maximally coherent states to provide a refinement in quantifying coherence and give a measure-independent definition of the coherence-preserving operations. A ma…