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Volumn 81, Issue 1, 2010, Pages

Experimental comparison of Raman and rf outcouplers for high-flux atom lasers

Author keywords

[No Author keywords available]

Indexed keywords

ATOM LASER; BOSE-EINSTEIN CONDENSATES; BOUND STATE; EXPERIMENTAL COMPARISON; MULTI STATE; RADIO FREQUENCIES; RAMAN TRANSITION; TWO-STATE;

EID: 74949109358     PISSN: 10502947     EISSN: 10941622     Source Type: Journal    
DOI: 10.1103/PhysRevA.81.013618     Document Type: Article
Times cited : (12)

References (50)
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    • Technical noise here refers to all forms of noise arising from coupling to the environment. For magnetically confined BECs, any magnetic noise can couple to the condensate, including mechanical noise of the trap mount itself. Guided beams can also suffer due to mechanical noise. Although one can produce reasonably stable magnetic and mechanical systems, magnetically insensitive atom laser beams are far less susceptible to such effects.
    • Technical noise here refers to all forms of noise arising from coupling to the environment. For magnetically confined BECs, any magnetic noise can couple to the condensate, including mechanical noise of the trap mount itself. Guided beams can also suffer due to mechanical noise. Although one can produce reasonably stable magnetic and mechanical systems, magnetically insensitive atom laser beams are far less susceptible to such effects.
  • 21
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    • (2000)
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    • PRLTAO 0031-9007 10.1103/PhysRevLett.67.181
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    • Kasevich, M.1    Chu, S.2
  • 23
    • 74949133772 scopus 로고    scopus 로고
    • Although it is true that the accumulated phase shift increases with area for both rotation and acceleration, the ratio of phase shifts due to rotation and acceleration increases with the aspect ratio of the enclosed area for an interferometer of given length. Hence, if one is interested in measuring rotations, a long and thin enclosed area is technically useful for minimizing the effects of acceleration noise, and a faster beam is desirable. The opposite is true for measuring accelerations. Of course, one requires a sufficient area to achieve the required sensitivity, and thus a compromise must be reached for a single beam device.
    • Although it is true that the accumulated phase shift increases with area for both rotation and acceleration, the ratio of phase shifts due to rotation and acceleration increases with the aspect ratio of the enclosed area for an interferometer of given length. Hence, if one is interested in measuring rotations, a long and thin enclosed area is technically useful for minimizing the effects of acceleration noise, and a faster beam is desirable. The opposite is true for measuring accelerations. Of course, one requires a sufficient area to achieve the required sensitivity, and thus a compromise must be reached for a single beam device. This said, state of the art devices run two counter-propagating atom interferometers simultaneously, which allows cancellation of either the rotation or acceleration signal by subtracting or adding the output of each interferometer, respectively. Provided the devices are well overlapped, and have low technical noise, this renders slow beams more useful, in general, for high sensitivity devices.
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    • PLRAAN 1050-2947 10.1103/PhysRevA.72.033601
    • S. A. Haine and J. J. Hope, Phys. Rev. A PLRAAN 1050-2947 10.1103/PhysRevA.72.033601 72, 033601 (2005).
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  • 26
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    • PRLTAO 0031-9007 10.1103/PhysRevLett.96.133601
    • S. A. Haine, M. K. Olsen, and J. J. Hope, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.96.133601 96, 133601 (2006).
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    • PLRAAN 1050-2947 10.1103/PhysRevA.69.023605
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    • PLRAAN 1050-2947 10.1103/PhysRevA.74.023616
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* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.