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8 papers · 2 filters
The roles of quantum correlations in quantum cloning
Jun Zhang, Shao-xiong Wu, Chang-shui Yu
In this paper, we study the entanglement and quantum discord of the output modes in the unified state-dependent cloning and probabilistic quantum cloning. The trip…
Non-classicalities via perturbing local unitary operations
Jun Zhang, Yang Zhang, Shao-xiong Wu +1
We study the nonclassical correlations in a two-qubit state by the perturbing local unitary operation method. We find that the definitions of various non-classicalities including q…
Rényi entropy uncertainty relation for successive projective measurements
Jun Zhang, Yang Zhang, Chang-shui Yu
We investigate the uncertainty principle for two successive projective measurements in terms of Rényi entropy based on a single quantum system. Our results cover a large family of…
Quantum correlation cost of the weak measurement
Jun Zhang, Shao-xiong Wu, Chang-shui Yu
Quantum correlation cost (QCC) characterizing how much quantum correlation is used in a weak-measurement process is presented based on the trace norm. It is shown that the QCC is r…
Exact non-Markovian master equation for a driven damped two-level system
H. Z. Shen, M. Qin, Xiao-Ming Xiu +1
Driven two-level system is a useful model to describe many quantum objects, particularly in quantum information processing. However, the exact master equation for such a system is…
Quantum optical diode with semiconductor microcavities
H. Z. Shen, Y. H. Zhou, X. X. Yi
The semiconductor diode, which acts as an electrical rectifier and allows unidirectional electronic transports, is the key to information processing in integrated circuits. Analogo…