Photon condensation in circuit QED by engineered dissipation

Details Photon condensation in circuit QED by engineered dissipation Photon condensation in circuit QED by engineered dissipation

2012-01-16

arxiv.org/abs/1201.3388v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We study photon condensation phenomena in a driven and dissipative array of superconducting microwave resonators. Specifically, we show that by using an appropriately designed coupling of microwave photons to superconducting qubits, an effective dissipative mechanism can be engineered, which scatters photons towards low-momentum states while conserving their number. This mimics a tunable coupling of bosons to a low temperature bath, and leads to the formation of a stationary photon condensate in the presence of losses and under continuous-driving conditions. Here we propose a realistic experimental setup to observe this effect in two or multiple coupled cavities, and study the characteristics of such an out-of-equilibrium condensate, which arise from the competition between pumping and dissipation processes.

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