2001/11/30 by Lev Vaidman
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.90.010402
4 pages, revised version, to be published in PRL
arxiv created 2002/11/19 · arxiv updated 2013/05/29
It is shown, under the assumption of 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.