Sub-Planck phase-space structures and Heisenberg-limited measurements

We show how sub-Planck phase-space structures in the Wigner function [W. H. Zurek, Nature (London) 412, 712 (2001)] can be used to achieve Heisenberg-limited sensitivity in weak-force measurements. Nonclassical states of harmonic oscillators, consisting of superpositions of coherent states, are show...

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Veröffentlicht in:	Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2006-02, Vol.73 (2), Article 023803
Hauptverfasser:	Toscano, F., Dalvit, D. A. R., Davidovich, L., Zurek, W. H.
Format:	Artikel
Sprache:	eng
Schlagworte:	EIGENSTATES HARMONIC OSCILLATORS HEISENBERG MODEL PHASE SPACE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS QUANTUM ELECTRODYNAMICS TRAPS WIGNER EFFECT
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