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pro vyhledávání: '"McDonald G"'
Agent-based modeling is a computational dynamic modeling technique that may be less familiar to some readers. Agent-based modeling seeks to understand the behaviour of complex systems by situating agents in an environment and studying the emergent ou
Externí odkaz:
http://arxiv.org/abs/2304.08497
Akademický článek
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Autor:
Everitt, P. J., Sooriyabandara, M. A., Guasoni, M., Wigley, P. B., Wei, C. H., McDonald, G. D., Hardman, K. S., Manju, P., Close, J. D., Kuhn, C. C. N., Szigeti, S. S., Kivshar, Y. S., Robins, N. P.
Publikováno v:
Phys. Rev. A 96, 041601 (2017)
We observe the breakup dynamics of an elongated cloud of condensed $^{85}$Rb atoms placed in an optical waveguide. The number of localized spatial components observed in the breakup is compared with the number of solitons predicted by a plane-wave st
Externí odkaz:
http://arxiv.org/abs/1703.07502
Autor:
Wigley, P. B., Everitt, P. J., Hengel, A. van den, Bastian, J. W., Sooriyabandara, M. A., McDonald, G. D., Hardman, K. S., Quinlivan, C. D., Manju, P., Kuhn, C. C. N., Petersen, I. R., Luiten, A., Hope, J. J., Robins, N. P., Hush, M. R.
Machine-designed control of complex devices or experiments can discover strategies superior to those developed via simplified models. We describe an online optimization algorithm based on Gaussian processes and apply it to optimization of the product
Externí odkaz:
http://arxiv.org/abs/1507.04964
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
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