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Entanglement of Matter and Continuous-Wave Light

Monday, March 14, 2016 - 4:15pm
Location: 
Spilker 232

Prof. Klemens Hammerer

Institute for Theoretical Physics and Institute for Gravitational Physics (Albert-Einstein-Institute)
Leibniz University of Hannover

ABSTRACT

The generation of quantum states carrying entanglement among propagating light fields and stationary matter is a prerequisite for fundamental test of quantum mechanics, such as loophole free Bell tests, as well as for applications in quantum communication over long distances. Current experiments achieve a remarkably high efficiency in generating and controlling such entangled states of matter, such as single atoms, atomic ensembles, and even with micro-mechanical oscillators, with pulsed light. In my talk I will present our recent theoretical studies towards extending this to continuous-wave light which may provide new perspectives for experiments operating in the regime of strong cooperativity of light-matter interactions. In particular, I will show that this approach can be used to generate deterministically long-distance entanglement of material degrees of freedom, emulate many-body quantum dynamics, and perform analog variational calculations for models of quantum field theories.