Abstract

We propose a single-site addressing implementation based on the subwavelength localization via adiabatic passage (SLAP) technique. We consider a sample of ultracold neutral atoms loaded into a two-dimensional optical lattice with one atom per site. Each atom is modeled by a three-level Λ system in interaction with a pump and a Stokes laser pulse. Using a pump field with a node in its spatial profile, the atoms at all sites are transferred from one ground state of the system to the other via stimulated Raman adiabatic passage, except the one at the position of the node that remains in the initial ground state. This technique allows for the preparation, manipulation, and detection of atoms with a spatial resolution better than the diffraction limit, which either relaxes the requirements on the optical setup used or extends the achievable spatial resolution to lattice spacings smaller than accessible to date. In comparison to techniques based on coherent population trapping, SLAP gives a higher addressing resolution and has additional advantages such as robustness against parameter variations, coherence of the transfer process, and the absence of photon induced recoil. Additionally, the advantages of our proposal with respect to adiabatic spin-flip techniques are highlighted. Analytic expressions for the achievable addressing resolution and efficiency are derived and compared to numerical simulations for 87Rb atoms in state-of-the-art optical lattices.

Authors
D. Viscor, V. Ahufinger, J. Mompart, G. Birkl, i J. L. Rubio
Citation Key
PhysRevA.86.063409
COinS Data

Date Published
2015-04-10 11:18
DOI
10.1103/PhysRevA.86.063409
Pagination
063409
Publisher
American Physical Society
Reprint Edition
http://arxiv.org/abs/1301.1546
Journal
Phys. Rev. A
URL
http://link.aps.org/doi/10.1103/PhysRevA.86.063409
Volume
86
Year of Publication
2012