Generation of macroscopic superposition states with small nonlinearity

Journal Article · Tue Nov 30 23:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.061801· OSTI ID:20649886

Jeong, H; Ralph, T C ^[1]; Kim, M S ^[2]; Ham, B S ^[3]

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1. Centre for Quantum Computer Technology, Department of Physics, University of Queensland, St Lucia Qld 4072 (Australia)
2. School of Mathematics and Physics, Queen's University, Belfast BT7 1NN (United Kingdom)
3. Graduate School of Information and Communication, Inha University, Incheon (Korea, Republic of)

We suggest a scheme to generate a macroscopic superposition state ('Schroedinger cat state') of a free-propagating optical field using a beam splitter, homodyne measurement, and a very small Kerr nonlinear effect. Our scheme makes it possible to reduce considerably the required nonlinear effect to generate an optical cat state using simple and efficient optical elements.

• OSTI ID: 20649886
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BEAM SPLITTING
DETECTION
KERR EFFECT
NONLINEAR OPTICS
NONLINEAR PROBLEMS
QUANTUM MECHANICS