Generalised non-locality: A trade-off between strength and versatility
We consider a generalisation of quantum non-locality to allow all non-signalling correlations, by first placing quantum theory within a general probabilistic framework, and then expanding the set of allowed states to include all possibilities consistent with the no-signalling condition. By incorporating additional states with stronger non-locality than in quantum theory, we find that we necessarily reduce the set of allowed measurements and dynamics. This limits the versatility of the states and non-local correlations of the theory. One manifestation of this is that there is no analogue of entanglement swapping for generalised non-local correlations.
Quantum theory Non-locality PR-box Entanglement-swapping
Anthony J.Short Jonathan Barrett
H.H.Wills Physics Laboratory, University of Bristol,Tyndall Avenue, Bristol, BS8 1TL, U.K. Perimeter Institute for Theoretical Physics,31 Caroline Street N, Waterloo, Ontario N2L 2 Y5, Canada
国际会议
Asian Conference on Quantum Onformation Science 2006(2006亚洲量子信息大会)
北京
英文
74-75
2006-09-01（万方平台首次上网日期，不代表论文的发表时间）