TY - JOUR
T1 - All reversible dynamics in maximally nonlocal theories are trivial
AU - Gross, David
AU - Müller, Markus
AU - Colbeck, Roger
AU - Dahlsten, Oscar C. O.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2010/2/23
Y1 - 2010/2/23
N2 - A remarkable feature of quantum theory is nonlocality (Bell inequality violations). However, quantum correlations are not maximally nonlocal, and it is natural to ask whether there are compelling reasons for rejecting theories in which stronger violations are possible. To shed light on this question, we consider post-quantum theories in which maximally nonlocal states (nonlocal boxes) occur. We show that reversible transformations in such theories are trivial: they consist solely of local operations and permutations of systems. In particular, no correlations can be created; nonlocal boxes cannot be prepared from product states and classical computers can efficiently simulate all such processes. © 2010 The American Physical Society.
AB - A remarkable feature of quantum theory is nonlocality (Bell inequality violations). However, quantum correlations are not maximally nonlocal, and it is natural to ask whether there are compelling reasons for rejecting theories in which stronger violations are possible. To shed light on this question, we consider post-quantum theories in which maximally nonlocal states (nonlocal boxes) occur. We show that reversible transformations in such theories are trivial: they consist solely of local operations and permutations of systems. In particular, no correlations can be created; nonlocal boxes cannot be prepared from product states and classical computers can efficiently simulate all such processes. © 2010 The American Physical Society.
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U2 - 10.1103/PhysRevLett.104.080402
DO - 10.1103/PhysRevLett.104.080402
M3 - RGC 21 - Publication in refereed journal
SN - 0031-9007
VL - 104
JO - Physical Review Letters
JF - Physical Review Letters
IS - 8
M1 - 080402
ER -