22 citations · 65 across the 5 of their papers we have counts for
5 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…
Common environmental effects on quantum thermal transistor
Yu-qiang Liu, Deng-hui Yu, Chang-shui Yu
Quantum thermal transistor is a microscopic thermodynamical device that can modulate and amplify heat current through two terminals by the weak heat current at the third terminal.…
Quantifying coherence in terms of the pure-state coherence
Deng-hui Yu, Li-qiang Zhang, Chang-shui Yu
Quantifying quantum coherence is a key task in the resource theory of coherence. Here we establish a good coherence monotone in terms of a state conversion process, which automatic…