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5 papers · 2 filters
Fundamental Limitation on Cooling under Classical Noise
Jun Jing, Ravindra W. Chhajlany, Lian-Ao Wu
We prove a general theorem that the action of arbitrary classical noise or random unitary channels can not increase the maximum population of any eigenstate of an open quantum syst…
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…
Eigenstate Tracking in Open Quantum Systems
Jun Jing, Marcelo S. Sarandy, Daniel A. Lidar +2
Keeping a quantum system in a given instantaneous eigenstate is a control problem with numerous applications, e.g., in quantum information processing. The problem is even more chal…
Single photon transfer controlled by excitation phase in a two-atom cavity system
Chun Xiao Zhou, Rui Zhang, Miao Di Guo +2
We investigate the quantum interference effects of single photon transfer in two-atom cavity system caused by external excitation phase. In the proposed system, two identical atoms…
Dynamics and control of a qubit in spin environment: an exact master equation study
Jun Jing, Lian-Ao Wu
We present an exact master equation for a central spin- system coupled to a spin- bath in terms of hyperfine interaction, which provides a unified formalism for both free…