arXiv:1302.6134 · New Journal of Physics
Bell violation for unknown continuous-variable states
X-F Qian, Curtis J. Broadbent, Joseph H. Eberly
Abstract
We describe a new Bell test for two-particle entangled systems that engages an unbounded continuous variable. The continuous variable state is allowed to be arbitrary and inaccessible to direct measurements. A systematic method is introduced to perform the required measurements indirectly. Our results provide new perspectives on both the study of local realistic theory for continuous-variable systems and on the non-local control theory of quantum information.