228 citations · 1.8k across the 85 of their papers we have counts for
86 papers
Quantifying coherence in terms of Fisher information
Deng-hui Yu, Chang-shui Yu
In quantum metrology, the parameter estimation accuracy is bounded by quantum Fisher information. In this paper, we present coherence measures in terms of (quantum) Fisher informat…
The best approximation of a given qubit state with the limited pure-state set
Li-qiang Zhang, Deng-hui Yu, Chang-shui Yu
The preparation of quantum states lies at the foundation in the quantum information processing. The convex mixing of some existing quantum states is one of the effective candidate.…
The optimal approximation of qubit states with limited quantum states
Li-qiang Zhang, Deng-hui Yu, Chang-shui Yu
Measuring the closest distance between two states is an alternative and significant approach in the resource quantification, which is the core task in the resource theory. Quite li…
Quantum speed limit for the maximum coherent state under squeezed environment
Kang-ying Du, Ya-jie Ma, Shao-xiong Wu +1
The quantum speed limit time for quantum system under squeezed environment is studied. We consider two typical models, the damped Jaynes-Cummings model and the dephasing model. For…
Quantifying Dynamical Total Coherence in a Resource Non-increasing Framework
Si-ren Yang, Chang-shui Yu
We quantify the dynamical quantum resource in the resource non-increasing (RNI) framework, namely, the free dynamical resource is defined by the channels that cannot increase the s…
Time-ordering effects in a one-atom laser based on electromagnetically-induced transparency
Dmitri B. Horoshko, Chang-shui Yu, Sergei Ya. Kilin
One-atom laser based on electromagnetically-induced transparency, suggested recently [Phys. Rev. Lett. 124, 093603 (2020)], is capable of generating Schrödinger cat states in the r…