Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Debs J"'
Autor:
Kuhn, C. C. N., McDonald, G. D., Hardman, K. S., Bennetts, S., Everitt, P. J., Altin, P. A., Debs, J. E., Close, J. D., Robins, N. P.
Publikováno v:
2014 New J. Phys. 16 073035
This paper presents the first realisation of a simultaneous $^{87}$Rb -$^{85}$Rb Mach-Zehnder atom interferometer with Bose-condensed atoms. A number of ambitious proposals for precise terrestrial and space based tests of the Weak Equivalence Princip
Externí odkaz:
http://arxiv.org/abs/1401.5827
Autor:
McDonald, G. D., Keal, H., Altin, P. A., Debs, J. E., Bennetts, S., Kuhn, C. C. N., Hardman, K. S., Johnsson, M. T., Close, J. D., Robins, N. P.
Publikováno v:
Phys. Rev. A 87, 013632 (2013)
We demonstrate a horizontal, linearly guided Mach Zehnder atom interferometer in an optical waveguide. Intended as a proof-of-principle experiment, the interferometer utilises a Bose-Einstein condensate in the magnetically insensitive |F=1,mF=0> stat
Externí odkaz:
http://arxiv.org/abs/1212.4635
We review experimental progress on atom lasers out-coupled from Bose-Einstein condensates, and consider the properties of such beams in the context of precision inertial sensing. The atom laser is the matter-wave analog of the optical laser. Both dev
Externí odkaz:
http://arxiv.org/abs/1209.2172
Autor:
Altin, P. A., Johnsson, M. T., Negnevitsky, V., Dennis, G. R., Anderson, R. P., Debs, J. E., Szigeti, S. S., Hardman, K. S., Bennetts, S., McDonald, G. D., Turner, L. D., Close, J. D., Robins, N. P.
Publikováno v:
New J. Phys. 15, 023009 (2013)
We present a precision gravimeter based on coherent Bragg diffraction of freely falling cold atoms. Traditionally, atomic gravimeters have used stimulated Raman transitions to separate clouds in momentum space by driving transitions between two inter
Externí odkaz:
http://arxiv.org/abs/1207.1595
Autor:
Sané, S. S., Bennetts, S., Debs, J. E., Kuhn, C. C. N., McDonald, G. D., Altin, P. A., Close, J. D., Robins, N. P.
We present a narrow linewidth continuous laser source with over 11 Watts of output power at 780nm, based on single-pass frequency doubling of an amplified 1560nm fibre laser with 36% efficiency. This source offers a combination of high power, simplic
Externí odkaz:
http://arxiv.org/abs/1202.2657
Autor:
Altin, P. A., Dennis, G. R., McDonald, G. D., Döring, D., Debs, J. E., Close, J. D., Savage, C. M., Robins, N. P.
Publikováno v:
Phys. Rev. A 84, 033632 (2011)
Collapsing Bose-Einstein condensates are rich and complex quantum systems for which quantitative explanation by simple models has proved elusive. We present new experimental data on the collapse of high density Rb-85 condensates with attractive inter
Externí odkaz:
http://arxiv.org/abs/1108.2561
Autor:
Debs, J. E., Altin, P. A., Barter, T. H., Döring, D., Dennis, G. R., McDonald, G., Anderson, R. P., Close, J. D., Robins, N. P.
Publikováno v:
J. E. Debs, et al., Phys. Rev. A, 84, 033610 (2011)
We present a cold atom gravimeter operating with a sample of Bose-condensed Rubidium-87 atoms. Using a Mach-Zehnder configuration with the two arms separated by a two-photon Bragg transition, we observe interference fringes with a visibility of 83% a
Externí odkaz:
http://arxiv.org/abs/1011.5804
Autor:
Altin, P. A., McDonald, G., Döring, D., Debs, J. E., Barter, T., Robins, N. P., Close, J. D., Haine, S. A., Hanna, T. M., Anderson, R. P.
Publikováno v:
New J. Phys. 13, 065020 (2011)
We present a Ramsey-type atom interferometer operating with an optically trapped sample of 10^6 Bose-condensed Rb-87 atoms. The optical trap allows us to couple the |F =1, mF =0>\rightarrow |F =2, mF =0> clock states using a single photon 6.8GHz micr
Externí odkaz:
http://arxiv.org/abs/1011.4713
Publikováno v:
Rev. Sci. Instrum. 81, 063103 (2010)
We describe our experimental setup for creating stable Bose-Einstein condensates of Rb-85 with tunable interparticle interactions. We use sympathetic cooling with Rb-87 in two stages, initially in a tight Ioffe-Pritchard magnetic trap and subsequentl
Externí odkaz:
http://arxiv.org/abs/1003.4819
Autor:
Döring, D., McDonald, G., Debs, J. E., Figl, C., Altin, P. A., Bachor, H. -A., Robins, N. P., Close, J. D.
Publikováno v:
Phys. Rev. A 81, 043633 (2010)
Every measurement of the population in an uncorrelated ensemble of two-level systems is limited by what is known as the quantum projection noise limit. Here, we present quantum projection noise limited performance of a Ramsey type interferometer usin
Externí odkaz:
http://arxiv.org/abs/1002.3624