Portal de Periódicos da CAPES

Unity Occupation of Sites in a 3D Optical Lattice

1999; American Physical Society; Volume: 82; Issue: 11 Linguagem: Inglês

10.1103/physrevlett.82.2262

1092-0145

Marshall T. DePue, Colin McCormick, S. Lukman Winoto, Steven Oliver, David S. Weiss,

Advanced Frequency and Time Standards

An average filling factor of one atom per lattice site has been obtained in a submicron scale far-off-resonance optical lattice (FORL). High site occupation is obtained through a compression sequence that includes laser cooling in a 3D FORL and adiabatic toggling between the 3D FORL and a 1D FORL trap. After the highest filling factor is achieved, laser cooling causes collisional loss from lattice sites with more than one atom. Ultimately $44%$ of the sites have a single atom cooled to near its vibrational ground state. A theoretical model of site occupation based on Poisson statistics agrees well with the experimental results.