Quantum seismology

Brown, E, Donnelly, W, Kempf, A, Mann, R, Martin-Martinez, E and Menicucci, N 2014, 'Quantum seismology', New Journal of Physics, vol. 16, 105020, pp. 1-18.


Document type: Journal Article
Collection: Journal Articles

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Title Quantum seismology
Author(s) Brown, E
Donnelly, W
Kempf, A
Mann, R
Martin-Martinez, E
Menicucci, N
Year 2014
Journal name New Journal of Physics
Volume number 16
Article Number 105020
Start page 1
End page 18
Total pages 18
Publisher Institute of Physics Publishing Ltd.
Abstract We propose a quantum mechanical method of detecting weak vibrational disturbances inspired by the protocol of entanglement farming. We consider a setup where pairs of atoms in their ground state are successively sent through an optical cavity. It is known that in this way it is possible to drive that cavity toward a stable fixed-point state. Here we study how that fixed-point state depends on the time interval between pairs of atoms and on the distance between the cavitys mirrors. Taking advantage of an extremely precise resonance effect, we find that there are special values of these parameters where the fixed-point state is highly sensitive to perturbations, even harmonic vibrations with frequencies several orders of magnitude below the cavitys natural frequency. We propose that this sensitivity may be useful for high precision metrology.
Subject Quantum Information, Computation and Communication
Keyword(s) entanglement
field theory
metrology
nonperturbative methods
quantum optics
DOI - identifier 10.1088/1367-2630/16/10/105020
Copyright notice © 2014 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
ISSN 1367-2630
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