Ground state quantum coherences, from quantum beats to strong control
Andres D. Cimmarusti, Burkley D. Patterson, Wanderson M. Pimenta, Luis A. Orozco, Pablo Barberis-Blostein, H. J. Carmichael · The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting · 2013
Second order correlations reveal quantum beats from a coherent ground-state superposition on the undriven mode of a two-mode cavity QED system. Continuous drive induces decoherence due to Rayleigh scattering. We control this with feedback.