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Journal Articles Physical Review Letters Year : 2015

Antibunched Photons from Inelastic Cooper-Pair Tunneling

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Abstract

We demonstrate theoretically that charge transport across a Josephson junction, voltage-biased through a resistive environment, produces antibunched photons. We develop a continuous-mode description of the emitted radiation field in a semi-infinite transmission line terminated by the Josephson junction. Within a perturbative treatment in powers of the tunneling coupling across the Josephson junction, we capture effects originating in charging dynamics of consecutively tunneling Cooper pairs. We find that within a feasible experimental setup the Coulomb blockade provided by high zero-frequency impedance can be used to create antibunched photons at a very high rate and in a very versatile frequency window ranging from a few GHz to a THz.

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cea-01731472 , version 1 (14-03-2018)

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Juha Leppakangas, Mikael Fogelstrom, Alexander Grimm, Max Hofheinz, Michael Marthaler, et al.. Antibunched Photons from Inelastic Cooper-Pair Tunneling. Physical Review Letters, 2015, 115 (2), pp.027004. ⟨10.1103/PhysRevLett.115.027004⟩. ⟨cea-01731472⟩
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