TY - JOUR
T1 - Direct Wigner tomography of a superconducting anharmonic oscillator
AU - Shalibo, Yoni
AU - Resh, Roy
AU - Fogel, Ofer
AU - Shwa, David
AU - Bialczak, Radoslaw
AU - Martinis, John M.
AU - Katz, Nadav
PY - 2013/3/5
Y1 - 2013/3/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84874597871&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.110.100404
DO - 10.1103/PhysRevLett.110.100404
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AN - SCOPUS:84874597871
SN - 0031-9007
VL - 110
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
M1 - 100404
ER -