Phys. Rev. Lett. 96, 070501 (2006) [4 pages]Quantum Key Distribution Based on Arbitrarily Weak Distillable Entangled StatesReceived 11 October 2005; published 21 February 2006 States with private correlations but little or no distillable entanglement were recently reported. Here, we consider the secure distribution of such states, i.e., the situation when an adversary gives two parties such states and they have to verify privacy. We present a protocol which enables the parties to extract from such untrusted states an arbitrarily long and secure key, even though the amount of distillable entanglement of the untrusted states can be arbitrarily small. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.070501
DOI:
10.1103/PhysRevLett.96.070501
PACS:
03.67.Dd, 03.67.Mn
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.