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8 papers · 2 filters
Deterministic entanglement of photons in two superconducting microwave resonators
H. Wang, Matteo Mariantoni, Radoslaw C. Bialczak +12
Quantum entanglement, one of the defining features of quantum mechanics, has been demonstrated in a variety of nonlinear spin-like systems. Quantum entanglement in linear systems h…
Spin Squeezing, Negative Correlations, and Concurrence in the Quantum Kicked Top Model
Xiaoqian Wang, Jian Ma, Lijun Song +2
We study spin squeezing, negative correlations, and concurrence in the quantum kicked top model. We prove that the spin squeezing and negative correlations are equivalent for spin…
Optimal measurements to access classical correlations of two-qubit states
Xiao-Ming Lu, Jian Ma, Zhengjun Xi +1
We analyze the optimal measurements accessing classical correlations in arbitrary two-qubit states. Two-qubit states can be transformed into the canonical forms via local unitary o…
Operator Quantum Geometric Tensor and Quantum Phase Transitions
Xiao-Ming Lu, Xiaoguang Wang
We extend the quantum geometric tensor from the state space to the operator level,and investigate its properties like the additivity for factorizable models and the splitting of tw…
Exact non-Markovian cavity dynamics strongly coupled to a reservoir
Heng-Na Xiong, Wei-Min Zhang, Xiaoguang Wang +1
The exact non-Markovian dynamics of a microcavity strongly coupled to a general reservoir at arbitrary temperature is studied. With the exact master equation for the reduced densit…
Geometric measure of quantum discord under decoherence
Xiao-Ming Lu, Zheng-Jun Xi, Zhe Sun +1
The dynamics of a geometric measure of the quantum discord (GMQD) under decoherence is investigated. We show that the GMQD of a two-qubit state can be alternatively obtained throug…