3 research outputs found
Probing few-particle Laughlin states of photons via correlation measurements
We propose methods to create and observe Laughlin-like states of photons in a
strongly nonlinear optical cavity. Such states of strongly interacting photons
can be prepared by pumping the cavity with a Laguerre-Gauss beam, which has a
well-defined orbital angular momentum per photon. The Laughlin-like states
appear as sharp resonances in the particle-number-resolved transmission
spectrum. Power spectrum and second-order correlation function measurements
yield unambiguous signatures of these few-particle strongly-correlated states.Comment: 11 pages including appendice
Photon condensation in circuit QED by engineered dissipation
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