Published March 2007
| Version v1
Journal article
Quantum-nondemolition measurement of photon arrival using an atom-cavity system
Creators
- 1. Quantum Computation and Information Project, ERATO-SORST, JST, Miyukigaoka 34 Ibaraki 305-8501 (Japan)
Description
A simple and efficient quantum-nondemolition measurement (QND) scheme is proposed in which the arrival of a signal photon is detected without affecting the qubit state. The proposed QND scheme functions even if the ancillary photon is replaced with weak light composed of vacuum and one-photon states. Although the detection scheme is designed for entanglement sharing applications, it is also suitable for general purification of a single-photon state
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 75
- Journal Issue
- 3
- Journal Page Range
- p. 032320-032320.11
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39011017
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- FUNCTIONS; PHOTONS; PURIFICATION; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS; QUBITS
- Descriptors DEC
- BOSONS; ELEMENTARY PARTICLES; INFORMATION; MASSLESS PARTICLES; MECHANICS; QUANTUM INFORMATION
Optional Information
- Notes
- (c) 2007 The American Physical Society