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arXiv · 1904.12278

Single atom laser in normal-superconductor quantum dots

Gianluca Rastelli·Michele Governale
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Abstract

We study a single-level quantum dot strongly coupled to a superconducting lead and tunnel-coupled to a normal electrode which can exchange energy with a single-mode resonator. We show that a such system can sustain lasing characterized by a sub-Poissonian Fock-state distribution of the resonator. The lasing regime is clearly identifiable in the subgap transport regime: in the resonant case, the current is pinned to the maximum value achievable in this hybrid nanostructure.

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Gianluca Rastelli, Michele Governale. 2019-04-28. Single atom laser in normal-superconductor quantum dots. https://doi.org/10.1103/physrevb.100.085435

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