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Title: Ultimate on-chip quantum amplifier
Authors: Astafiev, O.V.
Abdumalikov, A.A.
Zagoskin, Alexandre M.
Pashkin, Yu A.
Nakamura, Y.
Tsai, J.S.
Issue Date: 2010
Publisher: © The American Physical Society
Citation: ASTAFIEV, O.V. ... et al, 2010. Ultimate on-chip quantum amplifier. Physical Review Letters, 104 (18), 183603.
Abstract: 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.
Description: This article was published in the journal, Physical Review Letters [© The American Physical Society]. It is also available at: http://dx.doi.org/10.1103/PhysRevLett.104.183603
Version: Published
DOI: 10.1103/PhysRevLett.104.183603
URI: https://dspace.lboro.ac.uk/2134/12794
Publisher Link: http://dx.doi.org/10.1103/PhysRevLett.104.183603
ISSN: 0031-9007
Appears in Collections:Published Articles (Physics)

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