Symmetric extensions of quantum States and local hidden variable theories |
| |
Authors: | Terhal Barbara M Doherty Andrew C Schwab David |
| |
Institution: | IBM Watson Research Center, P.O. Box 218, Yorktown Heights, NY 10598, USA. |
| |
Abstract: | While all bipartite pure entangled states violate some Bell inequality, the relationship between entanglement and nonlocality for mixed quantum states is not well understood. We introduce a simple and efficient algorithmic approach for the problem of constructing local hidden variable theories for quantum states. The method is based on constructing a so-called symmetric quasiextension of the quantum state that gives rise to a local hidden variable model with a certain number of settings for the observers Alice and Bob. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|