Direct Wigner tomography of a superconducting anharmonic oscillator
Quantum Physics
2015-06-11 v1 Superconductivity
Abstract
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.
Keywords
Cite
@article{arxiv.1208.2441,
title = {Direct Wigner tomography of a superconducting anharmonic oscillator},
author = {Yoni Shalibo and Roy Resh and Ofer Fogel and David Shwa and Radoslaw Bialczak and John M. Martinis and Nadav Katz},
journal= {arXiv preprint arXiv:1208.2441},
year = {2015}
}
Comments
5 figures, 1 table and supplementary material