Cavity Quantum Electrodynamics of Continuously Monitored Bose-Condensed Atoms

摘要: We study cavity quantum electrodynamics of Bose-condensed atoms that are subjected to continuous monitoring the light leaking out cavity. Due a given detection record each stochastic realization, individual runs spontaneously break symmetry spatial profile atom cloud and this can be restored by considering ensemble averages over many realizations. show optomechanical excitations condensate engineered target specific collective modes. This is achieved exploiting structure symmetries modes fields. The fields utilized both for strong driving their measurement. In weak excitation limit condensate–cavity system may employed as sensitive phonon detector which operates counting photons outside have been selectively scattered desired phonons.