Zeno dynamics, indistinguishability of state, and entanglement

Year: 2012

Authors: Smerzi A.

Autors Affiliation: QSTAR, INO-CNR and LENS, Largo Enrico Fermi 2, 50125 Firenze, Italy

Abstract: According to the quantum Zeno effect (QZ), frequent observations of a system can dramatically slow down its dynamical evolution. We show that the QZ is a physical consequence of the statistical indistinguishability of neighboring quantum states. The time scale of the problem is expressed in terms of the Fisher information and we demonstrate that the Zeno dynamics of particle entangled states might require quite smaller measurement intervals than classically correlated states. We propose an interferometric experiment to test the prediction.


Volume: 109 (15)      Pages from: 150410  to: 150410

More Information: We gratefully acknowledge discussions with T. Calarco, P. Hyllus, G. Kurizki, and S. Pascazio. This work has been supported by the EU-STREP Project QIBEC and by the PAT within the activities of the BEC center. QSTAR is the MPQ, IIT, LENS, UniFi joint center for Quantum Science and Technology in Arcetri.
DOI: 10.1103/PhysRevLett.109.150410

Citations: 50
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