%0 Journal Article %1 Jo2007Long %A Jo, G. B. %A Shin, Y. %A Will, S. %A Pasquini, T. A. %A Saba, M. %A Ketterle, W. %A Pritchard, D. E. %A Vengalattore, M. %A Prentiss, M. %D 2007 %I American Physical Society %J Physical Review Letters %K atomchip, bec, squeezing %N 3 %P 030407+ %R 10.1103/physrevlett.98.030407 %T Long Phase Coherence Time and Number Squeezing of Two Bose-Einstein Condensates on an Atom Chip %U http://dx.doi.org/10.1103/physrevlett.98.030407 %V 98 %X 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.

@article{Jo2007Long, 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.}}, added-at = {2019-02-26T15:22:34.000+0100}, 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.}, biburl = {https://www.bibsonomy.org/bibtex/22989239f05663344fbf1dad4f0e3e2f3/rspreeuw}, 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}, citeulike-linkout-3 = {http://link.aps.org/abstract/PRL/v98/i3/e030407}, citeulike-linkout-4 = {http://link.aps.org/pdf/PRL/v98/i3/e030407}, doi = {10.1103/physrevlett.98.030407}, interhash = {10f4e904302de7eed807be75bb7b7700}, intrahash = {2989239f05663344fbf1dad4f0e3e2f3}, journal = {Physical Review Letters}, keywords = {atomchip, bec, squeezing}, month = jan, number = 3, pages = {030407+}, posted-at = {2007-10-18 22:47:18}, priority = {2}, publisher = {American Physical Society}, timestamp = {2019-02-26T15:22:34.000+0100}, 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 }