Florence Yver-Leduc et al 2003 J. Opt. B: Quantum Semiclass. Opt. 5 S136 doi:10.1088/1464-4266/5/2/371
Florence Yver-Leduc1, Patrick Cheinet1, Jérôme Fils1, André Clairon1, Noël Dimarcq1, David Holleville1, Philippe Bouyer2 and Arnaud Landragin1
Show affiliationsIn our high-precision atom interferometer, the measured atomic phase shift is sensitive to rotations and accelerations of the apparatus, and also to phase fluctuations of the Raman lasers. In this paper we study two principal noise sources affecting the atomic phase shift, induced by optical phase noise and vibrations of the setup. Phase noise is reduced by carrying out a phase lock of the Raman lasers after the amplification stages. We also present a new scheme to reduce noise due to accelerations by using a feed-forward on the phase of the Raman beams. With these methods, it should be possible to reach the range of the atomic quantum projection noise limit, which is about 1 mrad rms for our experiment, i.e. 30 nrad s−1 Hz−1/2 for a rotation measurement.
42.50.Lc Quantum fluctuations, quantum noise, and quantum jumps
42.60.Mi Dynamical laser instabilities; noisy laser behavior
03.75.Dg Atom and neutron interferometry
Issue 2 (April 2003)
Received 28 November 2002, in final form 3 February 2003
Published 2 April 2003
Florence Yver-Leduc et al 2003 J. Opt. B: Quantum Semiclass. Opt. 5 S136
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