Direct Wigner Tomography of a Superconducting Anharmonic Oscillator

被引：41

作者：

Shalibo, Yoni ^{[1
]}

Resh, Roy ^{[1
]}

Fogel, Ofer ^{[1
]}

Shwa, David ^{[1
]}

Bialczak, Radoslaw ^{[2
]}

Martinis, John M. ^{[2
]}

Katz, Nadav ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 10期

关键词：

ENTANGLEMENT; STATE;

D O I：

10.1103/PhysRevLett.110.100404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The analysis of wave-packet dynamics may be greatly simplified when viewed in phase space. While harmonic oscillators are often used as a convenient platform to study wave packets, arbitrary state preparation in these systems is more challenging. Here, we demonstrate a direct measurement of the Wigner distribution of complex photon states in an anharmonic oscillator-a superconducting phase circuit, biased in the small anharmonicity regime. We apply our method on nondispersive wave packets to explicitly show phase locking in states prepared by a frequency chirp. This method requires a simple calibration, and is easily applicable in our system out to the fifth level. DOI: 10.1103/PhysRevLett.110.100404

引用

页数：5

共 26 条

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