Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates

G McDonald, P. A. Altin, D. Döring, J E Debs, T H Barter, J D Close, N P Robins, S A Haine, T M Hanna, R. P. Anderson

Research output: Contribution to conferencePosterOther

Abstract

We present a Ramsey-type atom interferometer operating with an optically trapped sample of 106 Bose-condensed 87Rb atoms. We investigate this interferometer experimentally and theoretically with an eye to the construction of future high precision atomic sensors. Our results indicate that, with further experimental refinements, it will be possible to produce and measure the output of a sub-shot-noise limited, large atom number BEC-based interferometer. The optical trap (shown in Figure 1 (c)) allows us to couple the |F = 1,mF = 0) → |F = 2,mF = 0) clock states using a single photon 6.8 GHz microwave transition, while state selective readout is achieved with absorption imaging. We analyse the process of absorption imaging and show that it is possible to observe atom number variance directly, with a signal-to-noise ratio ten times better than the atomic projection noise limit on 106 condensate atoms. We discuss the technical and fundamental noise sources that limit our current system, and present theoretical and experimental results on interferometer contrast, de-phasing and miscibility.

Original languageEnglish
Pages116-118
Number of pages3
Publication statusPublished - 2011
EventConference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011 - Sydney Convention and Exhibition Centre, Sydney, Australia
Duration: 28 Aug 20111 Sep 2011

Conference

ConferenceConference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011
Abbreviated titleIQEC/CLEO Pacific Rim 2011
CountryAustralia
CitySydney
Period28/08/111/09/11

Cite this

McDonald, G., Altin, P. A., Döring, D., Debs, J. E., Barter, T. H., Close, J. D., ... Anderson, R. P. (2011). Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates. 116-118. Poster session presented at Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, Sydney, Australia.
McDonald, G ; Altin, P. A. ; Döring, D. ; Debs, J E ; Barter, T H ; Close, J D ; Robins, N P ; Haine, S A ; Hanna, T M ; Anderson, R. P. / Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates. Poster session presented at Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, Sydney, Australia.3 p.
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title = "Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates",
abstract = "We present a Ramsey-type atom interferometer operating with an optically trapped sample of 106 Bose-condensed 87Rb atoms. We investigate this interferometer experimentally and theoretically with an eye to the construction of future high precision atomic sensors. Our results indicate that, with further experimental refinements, it will be possible to produce and measure the output of a sub-shot-noise limited, large atom number BEC-based interferometer. The optical trap (shown in Figure 1 (c)) allows us to couple the |F = 1,mF = 0) → |F = 2,mF = 0) clock states using a single photon 6.8 GHz microwave transition, while state selective readout is achieved with absorption imaging. We analyse the process of absorption imaging and show that it is possible to observe atom number variance directly, with a signal-to-noise ratio ten times better than the atomic projection noise limit on 106 condensate atoms. We discuss the technical and fundamental noise sources that limit our current system, and present theoretical and experimental results on interferometer contrast, de-phasing and miscibility.",
author = "G McDonald and Altin, {P. A.} and D. D{\"o}ring and Debs, {J E} and Barter, {T H} and Close, {J D} and Robins, {N P} and Haine, {S A} and Hanna, {T M} and Anderson, {R. P.}",
year = "2011",
language = "English",
pages = "116--118",
note = "Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, IQEC/CLEO Pacific Rim 2011 ; Conference date: 28-08-2011 Through 01-09-2011",

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McDonald, G, Altin, PA, Döring, D, Debs, JE, Barter, TH, Close, JD, Robins, NP, Haine, SA, Hanna, TM & Anderson, RP 2011, 'Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates' Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, Sydney, Australia, 28/08/11 - 1/09/11, pp. 116-118.

Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates. / McDonald, G; Altin, P. A.; Döring, D.; Debs, J E; Barter, T H; Close, J D; Robins, N P; Haine, S A; Hanna, T M; Anderson, R. P.

2011. 116-118 Poster session presented at Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, Sydney, Australia.

Research output: Contribution to conferencePosterOther

TY - CONF

T1 - Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates

AU - McDonald, G

AU - Altin, P. A.

AU - Döring, D.

AU - Debs, J E

AU - Barter, T H

AU - Close, J D

AU - Robins, N P

AU - Haine, S A

AU - Hanna, T M

AU - Anderson, R. P.

PY - 2011

Y1 - 2011

N2 - We present a Ramsey-type atom interferometer operating with an optically trapped sample of 106 Bose-condensed 87Rb atoms. We investigate this interferometer experimentally and theoretically with an eye to the construction of future high precision atomic sensors. Our results indicate that, with further experimental refinements, it will be possible to produce and measure the output of a sub-shot-noise limited, large atom number BEC-based interferometer. The optical trap (shown in Figure 1 (c)) allows us to couple the |F = 1,mF = 0) → |F = 2,mF = 0) clock states using a single photon 6.8 GHz microwave transition, while state selective readout is achieved with absorption imaging. We analyse the process of absorption imaging and show that it is possible to observe atom number variance directly, with a signal-to-noise ratio ten times better than the atomic projection noise limit on 106 condensate atoms. We discuss the technical and fundamental noise sources that limit our current system, and present theoretical and experimental results on interferometer contrast, de-phasing and miscibility.

AB - We present a Ramsey-type atom interferometer operating with an optically trapped sample of 106 Bose-condensed 87Rb atoms. We investigate this interferometer experimentally and theoretically with an eye to the construction of future high precision atomic sensors. Our results indicate that, with further experimental refinements, it will be possible to produce and measure the output of a sub-shot-noise limited, large atom number BEC-based interferometer. The optical trap (shown in Figure 1 (c)) allows us to couple the |F = 1,mF = 0) → |F = 2,mF = 0) clock states using a single photon 6.8 GHz microwave transition, while state selective readout is achieved with absorption imaging. We analyse the process of absorption imaging and show that it is possible to observe atom number variance directly, with a signal-to-noise ratio ten times better than the atomic projection noise limit on 106 condensate atoms. We discuss the technical and fundamental noise sources that limit our current system, and present theoretical and experimental results on interferometer contrast, de-phasing and miscibility.

UR - http://www.scopus.com/inward/record.url?scp=84893579843&partnerID=8YFLogxK

M3 - Poster

SP - 116

EP - 118

ER -

McDonald G, Altin PA, Döring D, Debs JE, Barter TH, Close JD et al. Optically trapped atom interferometry using the clock transition of large 87Rb Bose-Einstein condensates. 2011. Poster session presented at Conference on Lasers and Electro-Optics Pacific Rim - CLEOPR 2011 and International Quantum Electronics Conference, IQEC 2011, Sydney, Australia.