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Nonadditivity of Bipartite Distillable Entanglement follows from Conjecture on Bound Entangled Werner States
Peter W. Shor, John A. Smolin, Barbara M. Terhal
Assuming the validity of a conjecture in quant-ph/9910026 and quant-ph/9910022 we show that the distillable entanglement for two bipartite states, each of which individually has ze…
Remote State Preparation
Charles H. Bennett, David P. DiVincenzo, Peter W. Shor +3
Quantum teleportation uses prior entanglement and forward classical communication to transmit one instance of an unknown quantum state. Remote state preparation (RSP) has the same…
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…
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…
A four-party unlockable bound-entangled state
John A. Smolin
I present a four-party unlockable bound-entangled state, that is, a four-party quantum state which cannot be written in a separable form and from which no pure entanglement can be…