Quantum dynamics of a driven three-level Josephson-atom maser

被引：7
作者：
Didier, N. [1 ]
Blanter, Ya. M. [2 ]
Hekking, F. W. J. [3 ,4 ]
机构：
[1] Scuola Normale Super Pisa, NEST, Ist Nanosci, CNR, Pisa, Italy
[2] Delft Univ Technol, Kavli Inst Nanosci, NL-2628 CJ Delft, Netherlands
[3] Univ Grenoble 1, Lab Phys & Modelisat Milieux Condenses, F-38042 Grenoble, France
[4] CNRS, F-38042 Grenoble, France
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 21期
关键词：
D O I：
10.1103/PhysRevB.82.214507
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recently, a lasing effect has been observed in a superconducting nanocircuit where a Cooper-pair box, acting as an artificial three-level atom, was coupled to a resonator [O. Astafiev, K. Inomata, A. O. Niskanen, T. Yamamoto, Yu. A. Pashkin, Y. Nakamura, and J. S. Tsai, Nature (London) 449, 588 (2007)]. Motivated by this experiment, we analyze the quantum dynamics of a three-level atom coupled to a quantum-mechanical resonator in the presence of a driving on the cavity within the framework of the Lindblad master equation. As a result, we have access to the dynamics of the atomic level populations and the photon number in the cavity as well as to the output spectrum. The results of our quantum approach agree with the experimental findings. The presence of a fluctuator in the circuit is also analyzed. Finally, we compare our results with those obtained within a semiclassical approximation.
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页数：5
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