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The Fourth Annual Canadian Quantum Information Students' Conference - 2007

The Fourth Annual Canadian Quantum Information Students' Conference

 

Vendredi juin 01, 2007
Speaker(s): 

The essential insight of quantum error correction was that quantum information can be protected by suitably encoding this quantum information across multiple independently erred quantum systems. Recently it was realized that, since the most general method for encoding quantum information is to encode it into a subsystem, there exists a novel form of quantum error correction beyond the traditional quantum error correcting subspace codes.

Scientific Areas: 

 

Vendredi juin 01, 2007
Speaker(s): 


In quantum information, one can prove that a secure quantum cryptography channel based on photon key distribution requires reliable single photon sources. If not, a potential eavesdropper may be able to get information using the extra photons. Current sources are based on either attenuated laser beams, which may produce randomly 2 or even more photons at a time following a poissonian statistics, or either based on two level-systems providing single photon sources often requiring cooling or complex set-ups.

Scientific Areas: 

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