52 citations · 149 across the 15 of their papers we have counts for
15 papers
Creation of superposition of arbitrary states encoded in two three-dimensional cavities
Tong Liu, Yang Zhang, Bao-qing Guo +2
The principle of superposition is a key ingredient for quantum mechanics. A recent work [M. Oszmaniec et al., Phys. Rev. Lett. 116, 110403 (2016)] has shown that a quantum adder th…
Deterministic transfer of an unknown qutrit state assisted by the low-Q microwave resonators
Tong Liu, Yang Zhang, Chang-Shui Yu +1
Qutrits (i.e., three-level quantum systems) can be used to achieve many quantum information and communication tasks due to their large Hilbert spaces. In this work, we propose a sc…
Local quantum uncertainty guarantees the measurement precision for two coupled two-level systems in non-Markovian environment
Shao-xiong Wu, Yang Zhang, Chang-shui Yu
Quantum Fisher information (QFI) is an important feature for the precision of quantum parameter estimation based on the quantum Cramér-Rao inequality. When the quantum state satisf…
Perfect photon absorption in hybrid atom-optomechanical system
Yang Zhang, Amjad Sohail, Chang-shui Yu
Recently, the photon absorption attracts lots of interest and plays an important role in a variety of applications. Here, we propose a valuable scheme to investigate the perfect ph…
The Measurement-Disturbance Relation and the Disturbance Trade-off Relation in Terms of Relative Entropy
Jun Zhang, Yang Zhang, Chang-shui Yu
We employ quantum relative entropy to establish the relation between the measurement uncertainty and its disturbance on a state in the presence (and absence) of quantum memory. For…
Optimal Photon blockade on the maximal atomic coherence
Yang Zhang, Jun Zhang, Chang-shui Yu
There is generally no obvious evidence in any direct relation between photon blockade and atomic coherence. Here instead of only illustrating the photon statistics, we show an inte…
Circuit QED: Cross-Kerr-effect induced by a superconducting qutrit without classical pulses
Tong Liu, Chui-ping Yang, Yang Zhang +2
The realization of cross-Kerr nonlinearity is an important task for many applications in quantum information processing. In this work, we propose a method for realizing cross-Kerr…
Stronger uncertainty relations with improvable upper and lower bounds
Jun Zhang, Yang Zhang, Chang-shui Yu
We utilize quantum superposition principle to establish the improvable upper and lower bounds on the stronger uncertainty relation, i.e., the "weighted-like" sum of the variances o…
Photon statistics on the extreme entanglement
Yang Zhang, Jun Zhang, Chang-shui Yu
The effects of photon bunching and antibunching correspond to the classical and quantum features of the electromagnetic field, respectively. No direct evidence suggests whether the…
The effect of center-of-mass motion on photon statistics
Yang Zhang, Jun Zhang, Shao-xiong Wu +1
We analyze the photon statistics of a weakly driven cavity quantum electrodynamics system and discuss the effects of photon blockade and photon-induced tunneling by effectively uti…
Entropic Uncertainty Principle and Information Exclusion Principle for multiple measurements in the presence of quantum memory
Jun Zhang, Yang Zhang, Chang-shui Yu
The Heisenberg uncertainty principle shows that no one can specify the values of the non-commuting canonically conjugated variables simultaneously. However, the uncertainty relatio…
The initial-state dependence of quantum speed limit
Shao-xiong Wu, Yang Zhang, Chang-shui Yu +1
The generic bound of quantum speed limit time (the minimal evolution time) for a qubit system interacting with structural environment is investigated. We define a new bound for the…
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 via quantum coherence
Chang-shui Yu, Yang Zhang, Haiqing Zhao
Quantum correlation includes quantum entanglement and quantum discord. Both entanglement and discord have a common necessary condition--------quantum coherence or quantum superposi…