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Quantum-Atom Optics Downunder (QAO)

Two-dimensional transport and transfer of individual atomic qubits in optical tweezers

J. Beugnon, Charles Tuchendler, H. Marion, Alpha Gaétan, Y. Miroshnychenko, Yvan R. P. Sortais, Andrew M. Lance, M. P. A. Jones, Gaétan Messin, Antoine Browaeys, Philippe Grangier

Published Jan 1, 2007• 3 citations
Publisher

Abstract

We experimentally demonstrate the coherent transport and transfer of aqubit, encoded on an atom trapped in a submicrometer tweezer, over a few microns distance. We will also discuss perspective for entangling atoms in two separate tweezers, using for instance two-photon interference effects.
DOI
10.1364/qao.2007.qma2

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This paper summarizes our recent progress towards using single rubidium atoms trapped in an optical tweezer to encode quantum information. We demonstrate single qubit rotations on this system and measure the coherence of the qubit. We move the quantum bit over distances of tens of microns and show that the coherence is reserved. We also transfer a qubit atom between two tweezers and show no loss of coherence. Finally, we describe our progress towards conditional entanglement of two atoms by photon emission and two-photon interferences.
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