Journal
REVIEWS OF MODERN PHYSICS
Volume 81, Issue 4, Pages 1727-1751Publisher
AMER PHYSICAL SOC
DOI: 10.1103/RevModPhys.81.1727
Keywords
Bell theorem; EPR paradox; optical fibres; optical parametric amplifiers; optical solitons; optical squeezing; quantum cryptography; quantum entanglement; teleportation
Categories
Funding
- ARC Centre of Excellence Program
- Queensland State Government
- Griffith University's research fellowship
- H. Wiseman's Federation Fellowship [FF0458313]
- EU
- Danish Research Council (FTP)
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This Colloquium examines the field of the Einstein, Podolsky, and Rosen (EPR) gedanken experiment, from the original paper of Einstein, Podolsky, and Rosen, through to modern theoretical proposals of how to realize both the continuous-variable and discrete versions of the EPR paradox. The relationship with entanglement and Bell's theorem are analyzed, and the progress to date towards experimental confirmation of the EPR paradox is summarized, with a detailed treatment of the continuous-variable paradox in laser-based experiments. Practical techniques covered include continuous-wave parametric amplifier and optical fiber quantum soliton experiments. Current proposals for extending EPR experiments to massive-particle systems are discussed, including spin squeezing, atomic position entanglement, and quadrature entanglement in ultracold atoms. Finally, applications of this technology to quantum key distribution, quantum teleportation, and entanglement swapping are examined.
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