Quantum Cloning for Absolute Radiometry

Journal Article · Fri Aug 20 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.080503· OSTI ID:21470965

Sanguinetti, Bruno; Pomarico, Enrico; Sekatski, Pavel; Zbinden, Hugo; Gisin, Nicolas ^[1]

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1. Group of Applied Physics, University of Geneva, 20 rue de l'Ecole-de-Medecine, CH-1211 Geneva 4 (Switzerland)

In the quantum regime information can be copied with only a finite fidelity. This fidelity gradually increases to 1 as the system becomes classical. In this Letter we show how this fact can be used to directly measure the amount of radiated power. We demonstrate how these principles can be used to build a practical primary standard.

• OSTI ID: 21470965
• Journal Information: Physical Review Letters, Vol. 105, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.105.080503; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MEASURING METHODS
QUANTUM INFORMATION
QUANTUM MECHANICS
QUANTUM STATES
QUANTUM TELEPORTATION
INFORMATION
MECHANICS