Direct Wigner tomography of a superconducting anharmonic oscillator
| Autor: | Shalibo, Yoni, Resh, Roy, Fogel, Ofer, Shwa, David, Bialczak, Radoslaw, Martinis, John M., Katz, Nadav |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.110.100404 |
| Popis: | 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 test our method on both non-classical states composed of two energy eigenstates and on the dynamics of a phase-locked wavepacket. This method requires a simple calibration, and is easily applicable in our system out to the fifth level. Comment: 5 figures, 1 table and supplementary material |
| Databáze: | arXiv |
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