| Issue |
Europhys. Lett.
Volume 42, Number 5, June 1998
|
|
|---|---|---|
| Page(s) | 481 - 486 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i1998-00277-9 | |
| Published online | 01 September 2002 | |
Atomic quantum non-demolition measurements and squeezing
Department of Physics and Astronomy,
University of Rochester Rochester, NY 14627, USA
Received:
19
January
1998
Accepted:
15
April
1998
We show that the accuracy of atomic interferometry can be
improved by using QND measurements of the atomic populations at the
inputs to the interferometer. The accuracy of such a
scheme surpasses the standard quantum limit of phase measurement
and could reach the
Heisenberg limit 
.
We propose to perform QND measurements of atomic populations
with an off-resonant laser field. The conditions necessary for this
kind of QND measurement could be
fulfilled in a variety of ways with current experimental
techniques, including magneto-optical traps and atomic cells.
PACS: 03.75.-b – Matter waves / 42.50.-p – Quantum optics / 32.80.-t – Photon interactions with atoms
© EDP Sciences, 1998
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