Matter-light entanglement with cold atomic ensembles

Bo Jing

Yuelong Wu, Shujing Li, Wei Ge +3 more

Yuelong, Wu, Shujing +9 more

Marcin Kubasik, Marco Koschorreck, M. Napolitano +2 more

Cold, trapped atomic ensembles present new opportunities for light-matter interfaces, including tomographic measurements and new interactions. The tensor polarizability can be exploited to produce interactions useful for spin squeezing, measurement of atom number, and quantum cloning of light into matter. We describe experiments in a cold ensemble of dipole-trapped 87Rb to produce spin squeezing by quantum non-demolition measurement.

Bouwmeester

Marcin Kubasik, S.R. de Echaniz, Marco Koschorreck +3 more

Effective interactions between a cold atomic ensemble and probe light can take the ldquoQND,rdquo ldquobeamsplitter,rdquo and ldquotwo-mode squeezingrdquo forms, useful for quantum cloning and memory. We describe experiments with dipole-trapped 87Rb using these interactions.