PhysRevLett.105.257002.pdf (353.38 kB)
Sisyphus effects in a microwave-excited flux-qubit resonator system
journal contribution
posted on 2023-06-07, 19:54 authored by J C Skinner, H Prance, P B Stiffell, Robert PranceSisyphus amplification, familiar from quantum optics, has recently been reported as a mechanism to explain the enhanced quality factor of a classical resonant (tank) circuit coupled to a superconducting flux qubit. Here we present data from a coupled system, comprising a quantum mechanical rf SQUID (flux qubit) reactively monitored by an ultrahigh quality factor noise driven rf resonator and excited by microwaves. The system exhibits enhancement of the tank-circuit resonance, bringing it significantly closer (within 1%) to the lasing limit, than previously reported results. 2010 The American Physical Society.
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Physical Review LettersISSN
0031-9007External DOI
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25Volume
105Page range
257002-1Department affiliated with
- Engineering and Design Publications
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2012-02-06First Open Access (FOA) Date
2015-06-24First Compliant Deposit (FCD) Date
2015-06-24Usage metrics
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