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The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting

Quantum Light - Matter Interactions with Cold Ensembles

Marcin Kubasik, S.R. de Echaniz, Marco Koschorreck, Eugene Simon Polzik, Morgan W. Mitchell

Published Jan 1, 2007• 0 citations
Publisher

Abstract

Cold, trapped atomic ensembles present new opportunities for light-matter interfaces, including tomographic measurements and new light-matter interactions. By way of illustration, we describe spinsqueezing experiments in a dipole-trapped 87Rb ensemble.
DOI
10.1364/cqo.2007.cmi40

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Abstract Light-matter interactions are an established field that is experiencing a renaissance in recent years due to the introduction of exotic coupling regimes. These include the ultrastrong and deep-strong coupling regimes, where the coupling constant is smaller and of the order of the frequency of the light mode, or larger than this frequency, respectively. In the past few years, quantum simulations of light-matter interactions in all possible coupling regimes have been proposed and experimentally realized, in quantum platforms such as trapped ions, superconducting circuits, cold atoms, and quantum photonics. We review this fledgling field, illustrating the benefits and challenges of the quantum simulations of light-matter interactions with quantum technologies.
Light-matter interaction processes are extremely attractive for quantum information problems, where one of the main goals consists in a quantum state of light mapping into a collective atomic state. By analogy with the Purcell effect, which exhibits in the presence of a resonator, enhancement of light-matter interaction can be achieved by using a nanofiber [1-2]. In this work we present a theoretical description of light interaction with a cold atomic ensemble mediated the nanofiber, which lies in a base of the experimental realization of a quantum memory protocol [3].