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Single-particle nonlocality and entanglement with the vacuum
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-2082-9583
2001 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 6404, no 4Article in journal (Refereed) Published
Abstract [en]

We propose a single-particle experiment that is equivalent to the conventional two-particle experiment used to demonstrate a violation of Bell's inequalities. Hence, we argue that quantum mechanical nonlocality can be demonstrated by single-particle states. The validity of such a claim has been discussed in the literature, but without reaching a clear consensus. We show that the disagreement can be traced to what part of the total state of the experiment one assigns to the (macroscopic) measurement apparatus. However, with a conventional and legitimate interpretation of the measurement process one is led to the conclusion that even a single particle can show nonlocal properties.

Place, publisher, year, edition, pages
2001. Vol. 6404, no 4
Keyword [en]
room-temperature, molecule fluorescence, quantum-mechanics, phase operator, photon states, bell theorem, inequalities, light
URN: urn:nbn:se:kth:diva-21022ISI: 000171609900014OAI: diva2:339719
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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