Photon-Number Squeezing in Circuit Quantum Electrodynamics - Condensed Matter > Other Condensed MatterReportar como inadecuado




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Abstract: A superconducting single-electron transistor SSET coupled to an anharmonicoscillator, e.g., a Josephson junction-L-C circuit, can drive the latter to anonequilibrium photon number state. By biasing the SSET in a regime where thecurrent is carried by a combination of inelastic quasiparticle tunneling andcoherent Cooper-pair tunneling Josephson quasiparticle cycle, cooling of theoscillator as well as a laser like enhancement of the photon number can beachieved. Here we show, that the cut-off in the quasiparticle tunneling ratedue to the superconducting gap, in combination with the anharmonicity of theoscillator, may create strongly squeezed photon number distributions. For lowdissipation in the oscillator nearly pure Fock states can be produced.



Autor: M. Marthaler, Gerd Schön, Alexander Shnirman

Fuente: https://arxiv.org/







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