Microwave control of atomic motion in optical lattices.
We control the quantum mechanical motion of neutral atoms in an optical lattice by driving microwave transitions between spin states whose trapping potentials are spatially offset. Control of this offset with nanometer precision allows for adjustment of the coupling strength between different motional states, analogous to an adjustable effective Lamb-Dicke factor. This is used both for efficient one-dimensional sideband cooling of individual atoms to a vibrational ground state population of 97% and to drive coherent Rabi oscillation between arbitrary pairs of vibrational states. We further show that microwaves can drive well resolved transitions between motional states in maximally offset, shallow lattices, and thus in principle allow for coherent control of long-range quantum transport.
Förster
Leonid
L
Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, D-53115 Bonn, Germany.
Karski
Michał
M
Choi
Jai-Min
JM
Steffen
Andreas
A
Alt
Wolfgang
W
Meschede
Dieter
D
Widera
Artur
A
Montano
Enrique
E
Lee
Jae Hoon
JH
Rakreungdet
Worawarong
W
Jessen
Poul S
PS