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Toward a test of angular momentum coherence in a twin-atom interferometer

Authors
  • de Carvalho, Carlos R.
  • Jalbert, Ginette
  • Impens, François
  • Robert, J.
  • Medina, Aline
  • Zappa, F.
  • Faria, N. V. de Castro
Type
Published Article
Publication Date
Jun 24, 2015
Submission Date
Oct 20, 2014
Identifiers
DOI: 10.1209/0295-5075/110/50001
Source
arXiv
License
Yellow
External links

Abstract

We present a scheme well-suited to investigate quantitatively the angular momentum coherence of molecular fragments. Assuming that the dissociated molecule has a null total angular momentum, we investigate the propagation of the corresponding atomic fragments in the apparatus. We show that the envisioned interferometer enables one to distinguish unambiguously a spin-coherent from a spin-incoherent dissociation, as well as to estimate the purity of the angular momentum density matrix associated with the fragments. This setup, which may be seen as an atomic analogue of a twin-photon interferometer, can be used to investigate the suitability of molecule dissociation processes -- such as the metastable hydrogen atoms H($2^2 S$)-H($2^2 S$) dissociation - for coherent twin-atom optics.

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