Non-Local Parity Measurements and the Quantum Pigeonhole Effect

Autor:	G. S. Paraoanu
Jazyk:	angličtina
Rok vydání:	2018
Předmět:	non-locality parity measurements entanglement pigeonhole principle controlled-NOT Science Astrophysics QB460-466 Physics QC1-999
Zdroj:	Entropy, Vol 20, Iss 8, p 606 (2018)
Druh dokumentu:	article
ISSN:	1099-4300
DOI:	10.3390/e20080606
Popis:	The pigeonhole principle upholds the idea that by ascribing to three different particles either one of two properties, we necessarily end up in a situation when at least two of the particles have the same property. In quantum physics, this principle is violated in experiments involving postselection of the particles in appropriately-chosen states. Here, we give two explicit constructions using standard gates and measurements that illustrate this fact. Intriguingly, the procedures described are manifestly non-local, which demonstrates that the correlations needed to observe the violation of this principle can be created without direct interactions between particles.
Databáze:	Directory of Open Access Journals
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