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 - Ultimate On-Chip Quantum Amplifier
AU - Astafiev, O. V.
AU - Abdumalikov, A. A.
AU - Zagoskin, A. M.
AU - Pashkin, Yuri
AU - Nakamura, Y.
AU - Tsai, J. S.
PY - 2010/5/7
Y1 - 2010/5/7
N2 - We report amplification of electromagnetic waves by a single artificial atom in open 1D space. Our three-level artificial atom-a superconducting quantum circuit-coupled to a transmission line presents an analog of a natural atom in open space. The system is the most fundamental quantum amplifier whose gain is limited by a spontaneous emission mechanism. The noise performance is determined by the quantum noise revealed in the spectrum of spontaneous emission, also characterized in our experiments.
AB - We report amplification of electromagnetic waves by a single artificial atom in open 1D space. Our three-level artificial atom-a superconducting quantum circuit-coupled to a transmission line presents an analog of a natural atom in open space. The system is the most fundamental quantum amplifier whose gain is limited by a spontaneous emission mechanism. The noise performance is determined by the quantum noise revealed in the spectrum of spontaneous emission, also characterized in our experiments.
U2 - 10.1103/PhysRevLett.104.183603
DO - 10.1103/PhysRevLett.104.183603
M3 - Journal article
VL - 104
SP - -
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 18
M1 - 183603
ER -