Polarization-based Light-Atom Quantum Interface with an All-optical Trap

Abstract

We describe the implementation of a system for studying light-matter interactions using an ensemble of $10^6$ cold rubidium 87 atoms, trapped in a single-beam optical dipole trap. In this configuration the elongated shape of the atomic cloud increases the strength of the collective light-atom coupling. Trapping all-optically allows for long storage times in a low decoherence environment. We are able to perform several thousands of measurements on one atomic ensemble with little destruction. We report results on paramagnetic Faraday rotations from a macroscopically polarized atomic ensemble. Our results confirm that strong light-atom coupling is achievable in this system which makes it attractive for single-pass quantum information protocols.

8 pages, 4 figures

References in corpus (9)

• Experimental demonstration of quantum memory for light
• Generation of a superposition of odd photon number states for quantum information networks
• Reconstruction of non-classical cavity field states with snapshots of their decoherence
• Reversible state transfer between light and a single trapped atom
• Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble
• Efficient Quantum State Estimation by Continuous Weak Measurement and Dynamical Control
• Multimode entanglement of light and atomic ensembles via off-resonant coherent forward scattering
• Conditions for spin squeezing in a cold 87Rb ensemble
• Hamiltonian Design in Atom-Light Interactions with Rubidium Ensembles: A Quantum Information Toolbox

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