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12 papers · 2 filters
Quantum Fisher Information Flow in Non-Markovian Processes of Open Systems
Xiao-Ming Lu, Xiaoguang Wang, C. P. Sun
We propose to use the quantum Fisher information in characterizing the information flow of open quantum systems. This information-theoretic approach provides a quantitative measure…
Spherical-box approach for resonances in presence of Coulomb interaction
Shan-Gui Zhou, Jie Meng, En-Guang Zhao
The spherical-box approach is extended to calculate the resonance parameters and the real part of the wave function for single particle resonances in a potential containing the lon…
Qubit-induced phonon blockade as a signature of quantum behavior in nanomechanical resonators
Yu-xi Liu, Adam Miranowicz, Y. B. Gao +3
The observation of quantized nanomechanical oscillations by detecting femtometer-scale displacements is a significant challenge for experimentalists. We propose that phonon blockad…
Sudden vanishing of spin squeezing under decoherence
Xiaoguang Wang, Adam Miranowicz, Yu-xi Liu +2
In order to witness multipartite correlations beyond pairwise entanglement, spin-squeezing parameters are analytically calculated for a spin ensemble in a collective initial state…
Controlling the transport of single photons by tuning the frequency of either one or two cavities in an array of coupled cavities
Jie-Qiao Liao, Z. R. Gong, Lan Zhou +3
We theoretically study how to control transport, bound states, and resonant states of a single photon in a one-dimensional coupled-cavity array. We find that the transport of a sin…
Multi-Stability of Electromagnetically Induced Transparency in Atom-Assisted Optomechanical Cavities
Yue Chang, T. Shi, Yu-xi Liu +2
We study how an oscillating mirror affects the electromagnetically induced transparency (EIT) of an atomic ensemble, which is confined in a gas cell placed inside a micro-cavity wi…