Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Quantum Noise in the Josephson Charge Qubit
AU - Astafiev, Oleg V.
AU - Pashkin, Yuri
AU - Nakamura, Y.
AU - Yamamoto, T.
AU - Tsai, Jaw-Shen
PY - 2004/12/31
Y1 - 2004/12/31
N2 - We study decoherence of the Josephson charge qubit by measuring energy relaxation and dephasing with help of the single-shot readout. We found that the dominant energy relaxation process is a spontaneous emission induced by quantum noise coupled to the charge degree of freedom. Spectral density of the noise at high frequencies is roughly proportional to the qubit excitation energy
AB - We study decoherence of the Josephson charge qubit by measuring energy relaxation and dephasing with help of the single-shot readout. We found that the dominant energy relaxation process is a spontaneous emission induced by quantum noise coupled to the charge degree of freedom. Spectral density of the noise at high frequencies is roughly proportional to the qubit excitation energy
U2 - 10.1103/PhysRevLett.93.267007
DO - 10.1103/PhysRevLett.93.267007
M3 - Journal article
VL - 93
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 26
M1 - 267007
ER -