Local implementation of nonlocal operations with block forms
Ning Bo Zhao, An Min Wang · Physical Review A · 2008
We investigate the local implementation of nonlocal operations with the block matrix form, and propose a protocol for any diagonal or offdiagonal block operation. We generalize this method to the two-party multiqubit case and the multiparty case. We also compare the local implementation of nonlocal block operations with the remote implementation of local operations [Huelga et al., Phys. Rev. A 63, 042303 (2001)], and point out a relation between them.