Abstract / Description of output
Logical nonlocality is completely characterized by Hardy's “paradox” in (2,2,l) and (2,k,2) scenarios. We consider a variety of consequences and applications of this fact. (i) Polynomial algorithms may be given for deciding logical nonlocality in these scenarios. (ii) Bell states are the only entangled two-qubit states which are not logically nonlocal under projective measurements. (iii) It is possible to witness Hardy nonlocality with certainty in a simple tripartite quantum system. (iv) Noncommutativity of observables is necessary and sufficient for enabling logical nonlocality.
Original language | English |
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Article number | 022122 |
Number of pages | 11 |
Journal | Physical Review A |
Volume | 95 |
DOIs | |
Publication status | Published - 24 Feb 2017 |