Quantum limits on phase-shift detection using multimode interferometers

Jonas Söderholm; Gunnar Björk; Björn Hessmo; Shuichiro Inoue

doi:10.1103/PhysRevA.67.053803

Quantum limits on phase-shift detection using multimode interferometers

Jonas Söderholm, Gunnar Björk, Björn Hessmo, and Shuichiro Inoue

Phys. Rev. A 67, 053803 – Published 16 May 2003

Abstract

Fundamental phase-shift detection properties of optical multimode interferometers are analyzed. Limits on perfectly distinguishable phase shifts are derived for general quantum states of a given average energy. These bounds are found to be independent of the number of interfering modes, and are consistent with the Heisenberg limit. A short discussion on the concept of well-defined relative phase is also included.

Received 5 April 2002

DOI:https://doi.org/10.1103/PhysRevA.67.053803

Authors & Affiliations

Jonas Söderholm^1,2, Gunnar Björk¹, Björn Hessmo¹, and Shuichiro Inoue³

¹Department of Microelectronics and Information Technology, Royal Institute of Technology (KTH), Electrum 229, SE-164 40 Kista, Sweden
²Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131-1156
³Institute of Quantum Science, Nihon University, 1-8 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8308, Japan

References (Subscription Required)

Click to Expand

Issue

Vol. 67, Iss. 5 — May 2003

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review A

covering atomic, molecular, and optical physics and quantum information