Phys. Rev. Lett. 90, 010402 (2003) [4 pages]Instantaneous Measurement of Nonlocal VariablesReceived 14 December 2001; revised 15 April 2002; published 2 January 2003 It is shown, under the assumption of the possibility to perform an arbitrary local operation, that all nonlocal variables related to two or more separate sites can be measured instantaneously, except for a finite time required for bringing to one location the classical records from these sites which yield the result of the measurement. It is a verification measurement: it yields reliably the eigenvalues of the nonlocal variables, but it does not prepare the eigenstates of the system. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.010402
DOI:
10.1103/PhysRevLett.90.010402
PACS:
03.65.Ud, 03.65.Ta, 03.67.Hk
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