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Akademický článek

A Bose-condensed, simultaneous dual-species Mach–Zehnder atom interferometer

Autor: C C N Kuhn, G D McDonald, K S Hardman, S Bennetts, P J Everitt, P A Altin, J E Debs, J D Close, N P Robins

Publikováno v: New Journal of Physics, Vol 16, Iss 7, p 073035 (2014)

This paper presents the first realization 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 principle

Externí odkaz: https://doaj.org/article/8990c5c0901749518421e3de06c2253b

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Akademický článek

Electromagnetically induced transparency and four-wave mixing in a cold atomic ensemble with large optical depth

Autor: J Geng, G T Campbell, J Bernu, D B Higginbottom, B M Sparkes, S M Assad, W P Zhang, N P Robins, P K Lam, B C Buchler

Publikováno v: New Journal of Physics, Vol 16, Iss 11, p 113053 (2014)

We report on the delay of optical pulses using electromagnetically induced transparency (EIT) in an ensemble of cold atoms with an optical depth exceeding 500. To identify the regimes in which four-wave mixing (4WM) impacts on EIT behaviour, we condu

Externí odkaz: https://doaj.org/article/989a38be8dcb41edbfe129019c47a7f1

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Akademický článek

Gradient echo memory in an ultra-high optical depth cold atomic ensemble

Autor: B M Sparkes, J Bernu, M Hosseini, J Geng, Q Glorieux, P A Altin, P K Lam, N P Robins, B C Buchler

Publikováno v: New Journal of Physics, Vol 15, Iss 8, p 085027 (2013)

Quantum memories are an integral component of quantum repeaters—devices that will allow the extension of quantum key distribution to communication ranges beyond that permissible by passive transmission. A quantum memory for this application needs t

Externí odkaz: https://doaj.org/article/b5f102ce450e4d9a9a0603a3f22b6f6a

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Akademický článek

Precision atomic gravimeter based on Bragg diffraction

Autor: P A Altin, M T Johnsson, V Negnevitsky, G R Dennis, R P Anderson, J E Debs, S S Szigeti, K S Hardman, S Bennetts, G D McDonald, L D Turner, J D Close, N P Robins

Publikováno v: New Journal of Physics, Vol 15, Iss 2, p 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: https://doaj.org/article/424136a8421547f890abb21f7549f93d

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