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quant-ph2000
Superactivation of Bound Entanglement
Peter W. Shor, John A. Smolin, Ashish V. Thapliyal
We show that, in a multi-party setting, two non-distillable (bound-entangled) states tensored together can make a distillable state. This is an example of true superadditivity of d…
quant-ph2000
Improved two-party and multi-party purification protocols
Elitza N. Maneva, John A. Smolin
We present an improved protocol for entanglement purification of bipartite mixed states using several states at a time rather than two at a time as in the traditional recurrence me…