TITLE

Sensor based on extending the concept of fidelity to classical waves

AUTHOR(S)
Taddese, Biniyam Tesfaye; Hart, James; Antonsen, Thomas M.; Ott, Edward; Anlage, Steven M.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/14/2009, Vol. 95 Issue 11, p114103
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We propose and demonstrate a remote sensor scheme by applying the quantum mechanical concept of fidelity loss to classical waves. The sensor makes explicit use of time-reversal invariance and spatial reciprocity in a wave chaotic system to sensitively and remotely measure the presence of small perturbations. The loss of fidelity is measured through a classical wave analog of the Loschmidt echo by employing a single-channel time-reversal mirror to rebroadcast a probe signal into the perturbed system. We also introduce the use of exponential amplification of the probe signal to partially overcome the effects of propagation losses and to vary the sensitivity.
ACCESSION #
44292235

 

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