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quant-ph2012★ 10 cited
Unified analytical treatments to qubit-oscillator systems
Shu He, Yu-Yu Zhang, Qing-Hu Chen +3
An effective scheme within two displaced bosonic operators with equal positive and negative displacements is extended to study qubit-oscillator systems analytically in an unified w…
quant-ph2012
Jaynes-Cummings model: What emerges first beyond the rotating-wave approximation?
Shu He, Qing-Hu Chen, Xue-Zao Ren +2
The Jaynes-Cummings model without the rotating-wave approximation can be solved exactly by extended Swain's ansatz with the conserved parity. The analytical approximations are then…