Recent progress on the manipulation of single atoms in optical tweezers for quantum computing

Antoine Browaeys (1) , Jérôme Beugnon (1) , Charles Tuchendler (1) , Harold Marion (1) , Alpha Gaëtan (1) , Yevhen Miroshnychenko (1) , Benoît Darquié (1) , Jos Dingjan (1) , Yvan R. P. Sortais (1) , Andrew Matheson Lance (1) , Matthew P. A. Jones (1) , Gaëtan Messin (1) , Philippe Grangier (1)

1 Laboratoire Charles Fabry de l'Institut d'Optique / Optique quantique

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.

Domaines: Physique Quantique [quant-ph]

Antoine Browaeys, Jérôme Beugnon, Charles Tuchendler, Harold Marion, Alpha Gaëtan, et al.. Recent progress on the manipulation of single atoms in optical tweezers for quantum computing. XVIII International Conference On Laser Spectroscopy (ICOLS 2007), Jun 2007, Telluride, Colorado, United States. pp 259-270, ⟨10.1142/9789812813206_0022⟩. ⟨hal-00509074⟩