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Paper detail

Ultimate on-chip quantum amplifier

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.

preprint2010arXivOpen access
O. AstafievA. A. Abdumalikov Jr.A. M. ZagoskinYu. A. PashkinY. NakamuraJ. S. Tsai
cond-mat.mes-hallcond-mat.supr-conquant-ph
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Open access6 authors3 topics
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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O. AstafievA. A. Abdumalikov Jr.A. M. ZagoskinYu. A. PashkinY. NakamuraJ. S. Tsai

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