Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip Export

@article{JoShiPre07, abstract = {We measure the relative phase of two Bose-Einstein condensates confined in a radio frequency induced double-well potential on an atom chip. We observe phase coherence between the separated condensates for times up to \~{}200 ms after splitting, a factor of 10 longer than the phase diffusion time expected for a coherent state for our experimental conditions. The enhanced coherence time is attributed to number squeezing of the initial state by a factor of 10. In addition, we demonstrate a rotationally sensitive (Sagnac) geometry for a guided atom interferometer by propagating the split condensates.}, author = {Jo, G. B. and Shin, Y. and Will, S. and Pasquini, T. A. and Saba, M. and Ketterle, W. and Pritchard, D. E. and Vengalattore, M. and Prentiss, M.}, citeulike-article-id = {1785850}, citeulike-linkout-0 = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000003030407000001&idtype=cvips&gifs=yes}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v98/e030407}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevLett.98.030407}, doi = {10.1103/PhysRevLett.98.030407}, journal = {Physical Review Letters}, keywords = {atom-interferometer, atom-interferometry, coherence, double-well, microtraps, number-squeezing, rf-dressed-potentials}, number = {3}, pages = {030407+}, posted-at = {2007-11-19 12:12:49}, priority = {2}, publisher = {APS}, title = {Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip}, url = {http://dx.doi.org/10.1103/PhysRevLett.98.030407}, volume = {98}, year = {2007} }

TY - JOUR ID - JoShiPre07 L3 - citeulike-article-id:1785850 N2 - We measure the relative phase of two Bose-Einstein condensates confined in a radio frequency induced double-well potential on an atom chip. We observe phase coherence between the separated condensates for times up to ~200 ms after splitting, a factor of 10 longer than the phase diffusion time expected for a coherent state for our experimental conditions. The enhanced coherence time is attributed to number squeezing of the initial state by a factor of 10. In addition, we demonstrate a rotationally sensitive (Sagnac) geometry for a guided atom interferometer by propagating the split condensates. IS - 3 JF - Physical Review Letters TI - Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip PB - APS VL - 98 SP - 030407 KW - atom-interferometer KW - atom-interferometry KW - coherence KW - double-well KW - microtraps KW - number-squeezing KW - rf-dressed-potentials AU - Jo, GB AU - Shin, Y AU - Will, S AU - Pasquini, TA AU - Saba, M AU - Ketterle, W AU - Pritchard, DE AU - Vengalattore, M AU - Prentiss, M PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevLett.98.030407 ER -