22 citations
5 papers · 1 filter
Quantum coherence in mutually unbiased bases
Yao-Kun Wang, Li-Zhu Ge, Yuan-Hong Tao
We investigate the norm of coherence of quantum states in mutually unbiased bases. We find that the sum of squared norm of coherence of the mixed state single qubit…
Dynamics of quantum coherence in Bell-diagonal states under Markovian channels
Yao-Kun Wang, Shao-Ming Fei, Zhi-Xi Wang
We study the curves of coherence for the Bell-diagonal states including -norm of coherence and relative entropy of coherence under the Markovian channels in the first subsys…
Room-temperature steady-state entanglement in a four-mode optomechanical system
Tao Wang, Rui Zhang, Xue-mei Su
Stationary entanglement in a four-mode optomechanical system, especially under roomtemperature, is discussed. In this scheme, when the coupling strengths between the two target mod…
Super quantum discord for X-type states
Tao Li, Teng Ma, Yaokun Wang +2
Weak measurement is a new way to manipulate and control quantum systems. Different from projection measurement, weak measurement only makes a small change in status. Applying weak…
Non-commutativity and Local Indistinguishability of Quantum States
Teng Ma, Ming-Jing Zhao, Yao-Kun Wang +1
We study the local indistinguishability problem of quantum states. By introducing an easily calculated quantity, non-commutativity, we present an criterion which is both necessary…