Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

In a recent paper,

Side-Channel-Free Quantum Key Distribution, by Samuel L. Braunstein and Stefano Pirandola. Phys. Rev. Lett. 108, 130502 (2012). doi:10.1103/PhysRevLett.108.130502, arXiv:1109.2330,

the authors repeatedly claim that

the dual teleportation channel act(s) as an ideal Hilbert space filter[...]

What do they mean by a Hilbert space filter?

How does teleportation act as a Hilbert space filter?

share|improve this question
3  
It's described in the 1999 Lo-Chau article in science, reference 17 here. You may also try to look at www-users.cs.york.ac.uk/schmuel/papers/bp12.pdf It's a filter against any side channel. –  Luboš Motl Apr 20 '12 at 16:13
6  
@LubošMotl: Why don't you write it as an answer? –  András Bátkai Apr 24 '12 at 19:00

1 Answer 1

(I'm copy-pasting from @Luboš Motl's comment into this community wiki.)

It's described in the 1999 Lo-Chau article in science, reference 17 here. You may also try to look at www-users.cs.york.ac.uk/schmuel/papers/bp12.pdf It's a filter against any side channel.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.