| Dissipative quantum phase transition in a biased Tavis-Cummings model |
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| 作者姓名： | 陈臻 邱岳寅 张国强 游建强 |
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| 作者单位： | Quantum Physics and Quantum Information Division;Interdisciplinary Center of Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device;Laboratory of Quantum Information |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos.11934010,U1801661,U1930402,and 11847087);the National Key Research and Development Program of China(Grant No.2016YFA0301200)。 |
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| 摘 要： | We study the dissipative quantum phase transition(QPT)in a biased Tavis–Cummings model consisting of an ensemble of two-level systems(TLSs)interacting with a cavity mode,where the TLSs are pumped by a drive field.In our proposal,we use a dissipative TLS ensemble and an active cavity with effective gain.In the weak drive-field limit,the QPT can occur under the combined actions of the loss and gain of the system.Owing to the active cavity,the QPT behavior can be much differentiated even for a finite strength of the drive field on the TLS ensemble.Also,we propose to implement our scheme based on the dissipative nitrogen-vacancy(NV)centers coupled to an active optical cavity made from the gainmedium-doped silica.Furthermore,we show that the QPT can be measured by probing the transmission spectrum of the cavity embedding the ensemble of the NV centers.
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| 关 键 词： | quantum phase transition DISSIPATIVE ENSEMBLE of TWO-LEVEL systems active optical CAVITY TAVIS-CUMMINGS MODEL |
Dissipative quantum phase transition in a biased Tavis-Cummings model |
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| Zhen Chen,Yueyin Qiu,Guo-Qiang Zhang,Jian-Qiang You.Dissipative quantum phase transition in a biased Tavis-Cummings model[J].Chinese Physics B,2020(4):296-302. |
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| Authors: | Zhen Chen Yueyin Qiu Guo-Qiang Zhang Jian-Qiang You |
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| Affiliation: | (Quantum Physics and Quantum Information Division,Beijing Computational Science Research Center,Beijing 100193,China;Interdisciplinary Center of Quantum Information and Zhejiang Province Key Laboratory of Quantum Technology and Device,Department of Physics and State Key Laboratory of Modern Optical Instrumentation,Zhejiang University,Hangzhou 310027,China;Laboratory of Quantum Information,Institute for Quantum Information and Spintronics,School of Science,Chongqing University of Posts and Telecommunications,Chongqing 400065,China) |
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