Analytical solutions by squeezing to the anisotropic Rabi model in the nonperturbative deep-strong-coupling regime
| Autor: | Xiang-You Chen, Yu-Yu Zhang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Quantum Physics education.field_of_study Superconducting circuits Coupling strength Population FOS: Physical sciences 01 natural sciences 010305 fluids & plasmas symbols.namesake Quantum electrodynamics Quantum mechanics 0103 physical sciences Strong coupling symbols Quantum Physics (quant-ph) 010306 general physics Anisotropy education Hamiltonian (quantum mechanics) |
| Zdroj: | Physical Review A. 96 |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.96.063821 |
| Popis: | A novel, unexplored nonperturbative deep-strong coupling (npDSC) achieved in superconducting circuits has been studied in the anisotropic Rabi model by the generalized squeezing rotating-wave approximation (GSRWA). Energy levels are evaluated analytically from the reformulated Hamiltonian and agree well with numerical ones under a wide range of coupling strength. Such improvement ascribes to deformation effects in the displaced-squeezed state presented by the squeezed momentum variance, which are omitted in the previous displaced state. The population dynamics confirm the validity of our approach for the npDSC strength. Our approach paves a way to the exploration of analysis in qubit-oscillator experiments for the npDSC strength by the displaced-squeezed state. 8 pages,4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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