Algorithmic construction of local hidden variable models for entangled quantum states
| Autor: | Nicolas Brunner, Tamás Vértesi, Flavien Hirsch, Matthew F. Pusey, Marco Túlio Quintino |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Quantum Physics General Physics and Astronomy FOS: Physical sciences ddc:500.2 One-way quantum computer 16. Peace & justice 01 natural sciences 010305 fluids & plasmas Open quantum system Quantum nonlocality Quantum process Quantum mechanics 0103 physical sciences Quantum algorithm Statistical physics Quantum information 010306 general physics Quantum information science Quantum Physics (quant-ph) No-communication theorem |
| Zdroj: | Physical Review Letters, Vol. 117, No 19 (2016) |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | Constructing local hidden variable (LHV) models for entangled quantum states is challenging, as the model should reproduce quantum predictions for all possible local measurements. Here we present a simple method for building LHV models, applicable to general entangled states, which consists in verifying that the statistics resulting from a finite set of measurements is local, a much simpler problem. This leads to a sequence of tests which, in the limit, fully capture the set of quantum states admitting a LHV model. Similar methods are developed for constructing local hidden state models. We illustrate the practical relevance of these methods with several examples, and discuss further applications. Improved abstract, to clarify the main result. Our results are now applicable to general POVMs See also related work by Cavalcanti and colleagues: http://arxiv.org/abs/1512.00277 |
| Databáze: | OpenAIRE |
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