Evaporative cooling in a radio-frequency trap Export

@article{citeulike:1730456, abstract = {A theoretical investigation for implementing a scheme of forced evaporative cooling in radio-frequency (rf) adiabatic potentials is presented. Supposing the atoms to be trapped in a combination of a dc magnetic field and a rf field at frequency 1, the cooling procedure is facilitated using a second rf source at frequency 2. This second rf field produces a controlled coupling between the spin states dressed by 1. The evaporation is then possible in a pulsed or continuous mode. In the pulsed case, atoms with a given energy are transferred into untrapped dressed states by abruptly switching off the 2 coupling. In the continuous case, it is possible for energetic atoms to adiabatically follow the doubly dressed states and escape out of the trap. Our results also show that when 1 and 2 are separated by at least the Rabi frequency associated with 1, additional evaporation zones appear which can make this process more efficient.}, author = {Carlos and Perrin, H\'el\`{e}ne and Garraway, Barry M. and Lorent, Vincent}, citeulike-article-id = {1730456}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLRAAN000074000005053413000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRA/v74/e053413}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevA.74.053413}, doi = {10.1103/PhysRevA.74.053413}, journal = {Physical Review A (Atomic, Molecular, and Optical Physics)}, keywords = {rf-dressed-potentials, rf-spectroscopy}, number = {5}, posted-at = {2008-01-09 15:45:25}, priority = {2}, publisher = {APS}, title = {Evaporative cooling in a radio-frequency trap}, url = {http://dx.doi.org/10.1103/PhysRevA.74.053413}, volume = {74}, year = {2006} }

TY - JOUR ID - citeulike:1730456 L3 - citeulike-article-id:1730456 N2 - A theoretical investigation for implementing a scheme of forced evaporative cooling in radio-frequency (rf) adiabatic potentials is presented. Supposing the atoms to be trapped in a combination of a dc magnetic field and a rf field at frequency 1, the cooling procedure is facilitated using a second rf source at frequency 2. This second rf field produces a controlled coupling between the spin states dressed by 1. The evaporation is then possible in a pulsed or continuous mode. In the pulsed case, atoms with a given energy are transferred into untrapped dressed states by abruptly switching off the 2 coupling. In the continuous case, it is possible for energetic atoms to adiabatically follow the doubly dressed states and escape out of the trap. Our results also show that when 1 and 2 are separated by at least the Rabi frequency associated with 1, additional evaporation zones appear which can make this process more efficient. IS - 5 JF - Physical Review A (Atomic, Molecular, and Optical Physics) TI - Evaporative cooling in a radio-frequency trap PB - APS VL - 74 KW - rf-dressed-potentials KW - rf-spectroscopy AU - Carlos AU - Perrin, H\'el\`{e}ne AU - Garraway, Barry AU - Lorent, Vincent PY - 2006/// UR - http://dx.doi.org/10.1103/PhysRevA.74.053413 ER -