Fock-state view of weak-value measurements and implementation with photons and atomic ensembles

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.040101· OSTI ID:21544536

Simon, Christoph ^[1]; Polzik, Eugene S ^[2]

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1. Institute for Quantum Information Science and Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, T2N 1N4 (Canada)
2. Niels Bohr Institute, Danish Quantum Optics Center QUANTOP, Copenhagen University, Blegdamsvej 17, DK-2100 Copenhagen O (Denmark)

Weak measurements in combination with postselection can give rise to a striking amplification effect (related to a large ''weak value''). We show that this effect can be understood by viewing the initial state of the pointer as the ground state of a fictional harmonic oscillator. This perspective clarifies the relationship between the weak-value regime and other measurement techniques and inspires a proposal to implement fully quantum weak-value measurements combining photons and atomic ensembles.

• OSTI ID: 21544536
• Journal Information: Physical Review. A, Vol. 83, Issue 4; Other Information: DOI: 10.1103/PhysRevA.83.040101; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
FOCK REPRESENTATION
GROUND STATES
HARMONIC OSCILLATORS
MEASURING METHODS
PHOTONS
QUANTUM MECHANICS
BOSONS
ELEMENTARY PARTICLES
ENERGY LEVELS
MASSLESS PARTICLES
MECHANICS