Atoms in a radiofrequency-dressed optical lattice

Autor:	Lundblad, N., Lee, P. J., Spielman, I. B., Brown, B. L., Phillips, W. D., Porto, J. V.
Rok vydání:	2008
Předmět:	Quantum Physics Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.100.150401
Popis:	We load cold atoms into an optical lattice dramatically reshaped by radiofrequency (rf) coupling of state-dependent lattice potentials. This rf dressing changes the unit cell of the lattice at a subwavelength scale, such that its curvature and topology departs strongly from that of a simple sinusoidal lattice potential. Radiofrequency dressing has previously been performed at length scales from mm to tens of microns, but not at the single-optical-wavelength scale. At this length scale significant coupling between adiabatic potentials leads to nonadiabatic transitions, which we measure as a function of lattice depth and dressing frequency and amplitude. We also investigate the dressing by measuring changes in the momentum distribution of the dressed states. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0801.0405 Zobrazit plný text záznamu View this record from Arxiv