TY - GEN
T1 - Comparing thermal and lasing atomic sources for precision inertial measurement
AU - Debs, J. E.
AU - Altin, P. A.
AU - Barter, T. H.
AU - Döring, D.
AU - Dennis, G. R.
AU - McDonald, G.
AU - Robins, N. P.
AU - Close, J. D.
AU - Anderson, R. P.
PY - 2011
Y1 - 2011
N2 - We compare the sensitivity of an interferometric measurement of gravity using a freely-falling, lasing atomic source to that achieved with a cold, thermal atomic source. We observe a higher fringe visibility with the lasing source, also the highest yet observed in such a configuration. We improve sensitivity by exploiting large momentum transfer beamsplitting (LMT), and discuss briefly the advantages of using a lasing atomic source for LMT. Most importantly, we measure no degradation of the sensitivity of our interferometer due to interaction induced dephasing at our limit of precision. Using a simple model, we verify this observation and project to beyond state-of-the-art sensitivities, concluding that with reasonable experimental parameters, interaction induced dephasing will not limit the sensitivity of inertial measurements using freely-falling, lasing atomic sources.
AB - We compare the sensitivity of an interferometric measurement of gravity using a freely-falling, lasing atomic source to that achieved with a cold, thermal atomic source. We observe a higher fringe visibility with the lasing source, also the highest yet observed in such a configuration. We improve sensitivity by exploiting large momentum transfer beamsplitting (LMT), and discuss briefly the advantages of using a lasing atomic source for LMT. Most importantly, we measure no degradation of the sensitivity of our interferometer due to interaction induced dephasing at our limit of precision. Using a simple model, we verify this observation and project to beyond state-of-the-art sensitivities, concluding that with reasonable experimental parameters, interaction induced dephasing will not limit the sensitivity of inertial measurements using freely-falling, lasing atomic sources.
UR - http://www.scopus.com/inward/record.url?scp=84862063511&partnerID=8YFLogxK
U2 - 10.1109/IQEC-CLEO.2011.6194138
DO - 10.1109/IQEC-CLEO.2011.6194138
M3 - Conference contribution
SN - 9780977565771
T3 - 2011 Int. Quantum Electron. Conf., IQEC 2011 and Conf. Lasers and Electro-Optics, CLEO Pacific Rim 2011 Incorporating the Australasian Conf. Optics, Lasers and Spectroscopy and the Australian Conf.
SP - 2082
EP - 2084
BT - 2011 Int. Quantum Electr. Conf., IQEC 2011 Conf Lasers Electro-Optics, CLEO Pacific Rim 2011 Incorporating Australasian Conf. on Optics, Lasers Spectrosc. Australian Conf. Optical Fibre Technol.- Conf
T2 - 2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011
Y2 - 28 August 2011 through 1 September 2011
ER -