most recent 30 from http://mathoverflow.net 2013-06-18T04:35:52Z http://mathoverflow.net/feeds/user/10003 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/41943/quantum-error-correction unknown (yahoo) 2010-10-12T20:33:10Z 2010-11-24T01:26:49Z

<p>One can correct the errors in a quantum channel iff the coherent information of the input state is not reduced by the channel. This is analogous to sending quantum entanglement through a channel. If the loss of coherent information by the channel is $ &lt; \varepsilon$, can one still correct errors? Can one restore the loss of information to provide for perfect correction? </p>

http://mathoverflow.net/questions/41943/quantum-error-correction 2010-10-12T21:09:59Z 2010-10-12T21:09:59Z

Well I meant not PERFECT error correction. Is is possible to get approximate error correction?

http://mathoverflow.net/questions/41943/quantum-error-correction 2010-10-12T20:49:05Z 2010-10-12T20:49:05Z

What do you mean? Isn't it clear?