Two-photon cooling of a nonlinear quantum oscillator

OPTICS COMMUNICATIONS

卷:282

Article

Macovei, Mihai A.¹  Xie, Xiao-Tao¹ 

[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

关键词: Two-photon effects;    Cooling;    Qubit;   

DOI  :  10.1016/j.optcom.2009.06.037

来源: Elsevier

【 摘 要 】

The cooling effects of a nonlinear quantum oscillator via its interaction with an artificial atom (qubit) are investigated. The quantum dissipations through the environmental reservoir of the nonlinear oscillator are included, taking into account the nonlinearity of the qubit-oscillator interaction. For appropriate bath temperatures and the resonator's quality factors, we demonstrate effective cooling below the thermal background. As the photon coherence functions behave differently for even and odd photon number states, we describe a mechanism distinguishing those states. The analytical formalism developed is general and can be applied to a wide range of systems. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free