corner
corner
APS » Journals » Phys. Rev. A » Volume 32 » Issue 4
< Previous Article | Next Article >

Phys. Rev. A 32, 2287–2292 (1985)

Quantum nondemolition measurement of the photon number via the optical Kerr effect

Download: PDF (331 kB) Buy this article Export: BibTeX or EndNote (RIS)

N. Imoto
NTT Musashino Electrical Communication Laboratories, Nippon Telegraph and Telephone Corporation, Midori-cho 3-9-11, Musashino-shi, Tokyo 180, Japan

H. A. Haus
Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Y. Yamamoto
NTT Musashino Electrical Communication Laboratories, Nippon Telegraph and Telephone Corporation, Midori-cho 3-9-11, Musashino-shi, Tokyo 180, Japan

Received 30 April 1985; published in the issue dated October 1985

This paper proposes a quantum nondemolition measurement scheme for the photon number. The signal and probe optical waves interact via the optical Kerr effect. The optical phase of the probe wave is selected as the readout observable for the measurement of the photon number of the signal wave. The measurement accuracy Δn and the imposed phase noise Δφ of the signal wave satisfy Heisenberg’s uncertainty principle with an equality sign, 〈(Δn)2〉〈(Δφ)2〉=(1/4). .AE

© 1985 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.32.2287
DOI:
10.1103/PhysRevA.32.2287
PACS:
42.50.+q, 42.65.Bp, 06.30.Lz
 
< Previous Article | Next Article >