Hydrogen atom interferometer with short light pulses

Heupel, T.; Mei, Michael; Niering, M.; Gross, B.; Weitz, Martin; Hänsch, Theodor W.; Bordé, Ch. J.

doi:10.1209/epl/i2002-00556-5

Cited by 13 publications

(9 citation statements)

References 18 publications

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“…Similar experiments have been started on rubidium [59] and hydrogen [92]. The contrast interferometer of Pritchard and co-workers [93], which operates with a sodium BEC, has given a precision of 7 ppm on h/M N a , but the result differs by 200 ppm from the accepted value, a difference attributed to the mean-field interaction in the condensate.…”

Section: Measurement Of H/m and Of The Fine Structure Constant αmentioning

confidence: 68%

Atom interferometry

et al. 2006

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In this paper, we present a brief overview of atom interferometry. This field of research has developed very rapidly since 1991. Atom and light wave interferometers present some similarities but there are very important differences in the tools used to manipulate these two types of waves. Moreover, the sensitivity of atomic waves and light waves to their environment is very different. Atom interferometry has already been used for a large variety of studies: measurements of atomic properties and of inertial effects (accelerations and rotations), new access to some fundamental constants, observation of quantum decoherence, etc. We review the techniques used for a coherent manipulation of atomic waves and the main applications of atom interferometers.

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Section: Measurement Of H/m and Of The Fine Structure Constant αmentioning

confidence: 68%

Atom interferometry

et al. 2006

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“…This approximate formula is valid in the limit α ≪ u. After averaging over ϕ, the visibility V is then still given by equation (17), where cos(kϕ) (k is an integer) is replaced by its average cos(kϕ) > over the distribution P (ϕ) simply given by: cos…”

Section: Fringe Visibility As a Function Of An Applied Magnetic Field...mentioning

confidence: 99%

“…J. Bordé and co-workers [9]; a Na 2 molecular interferometer by D. Pritchard and co-workers [10]; a metastable argon interferometer of A. Zeilinger and co-workers [11]; a metastable neon interferometer by Siu Au Lee and co-workers [12]; a cesium atom interferometer gyroscope by M. Kasevich and co-workers [13]; a K 2 molecular interferometer by E. Tiemann and co-workers [14], a helium atom and dimer interferometer by J. P. Toennies and co-workers [15], a large molecule interferometer by A. Zeilinger and co-workers [16]; a metastable hydrogen interferometer by T.W. Hänsch and co-workers [17].…”

Section: Introduction and Brief Historical Overviewmentioning

confidence: 99%

Lithium atom interferometer using laser diffraction: description and experiments

Miffre

Jacquey²,

Büchner³

et al. 2005

Eur. Phys. J. D

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We have built and operated an atom interferometer of the Mach-Zehnder type. The atomic wave is a supersonic beam of lithium seeded in argon and the mirrors and beam-splitters for the atomic wave are based on elastic Bragg diffraction on laser standing waves at λ = 671 nm. We give here a detailed description of our experimental setup and of the procedures used to align its components. We then present experimental signals, exhibiting atomic interference effects with a very high visibility, up to 84.5 ± 1 %. We describe a series of experiments testing the sensitivity of the fringe visibility to the main alignment defects and to the magnetic field gradient.

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“…We therefore did not discuss in detail the practical implementation of such interferometer. It is nevertheless worth mentioning that matter-wave interferometry with hydrogen atoms in Rydberg states has been already demonstrated in [68] (by coupling 2s and 15p levels) and that interferometer using only high Rydberg states have also recently been demonstrated [69,70]. We simply mention that one advantage of such a scheme, using Rydberg states, is than RF or microwave pulses can be used that are easy to implement and can address more velocity classes (due to the reduced Doppler effect) that Raman laser pulses.…”

Section: Discussionmentioning

confidence: 99%

Limitations for field-enhanced atom interferometry

Comparat

2020

Phys. Rev. A

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We discuss the possibility to enhance the sensitivity of optical interferometric devices by increasing its open area using an external field gradient that act differently on the two arms of the interferometers. The use of combined electric and magnetic field cancel non linear terms that dephases the interferometer. This is possible using well defined (typically with n ∼ 20 Rydberg) states, a magnetic field of few Tesla and an electric field gradient of ∼ 10V/cm 2 . However this allows only for interaction times on the order of tens of µs leading a reachable accuracy of only 1 or 2 order of magnitude higher than standard light-pulse atom interferometers. Furthermore, the control of fields and states and 3D trajectories puts severe limits to the reachable accuracy. This idea is therefore not suitable for precision measurement but might eventually be used for gravity or neutrality in antimatter studies.PACS numbers:

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Hydrogen atom interferometer with short light pulses

Cited by 13 publications

References 18 publications

Atom interferometry

Atom interferometry

Lithium atom interferometer using laser diffraction: description and experiments

Limitations for field-enhanced atom interferometry

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