TY - JOUR
T1 - Coherence times of dressed states of a superconducting qubit under extreme driving
AU - Wilson, C. M.
AU - Duty, T.
AU - Persson, F.
AU - Sandberg, M.
AU - Johansson, G.
AU - Delsing, P.
PY - 2007/6/22
Y1 - 2007/6/22
N2 - We measure longitudinal dressed states of a superconducting qubit, the single Cooper-pair box, and an intense microwave field. The dressed states represent the hybridization of the qubit and photon degrees of freedom and appear as avoided level crossings in the combined energy diagram. By embedding the circuit in an rf oscillator, we directly probe the dressed states. We measure their dressed gap as a function of photon number and microwave amplitude, finding good agreement with theory. In addition, we extract the relaxation and dephasing rates of these states.
AB - We measure longitudinal dressed states of a superconducting qubit, the single Cooper-pair box, and an intense microwave field. The dressed states represent the hybridization of the qubit and photon degrees of freedom and appear as avoided level crossings in the combined energy diagram. By embedding the circuit in an rf oscillator, we directly probe the dressed states. We measure their dressed gap as a function of photon number and microwave amplitude, finding good agreement with theory. In addition, we extract the relaxation and dephasing rates of these states.
UR - http://www.scopus.com/inward/record.url?scp=34547244748&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.98.257003
DO - 10.1103/PhysRevLett.98.257003
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AN - SCOPUS:34547244748
SN - 0031-9007
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 257003
ER -