General Codes
In general, a quantum code for a quantum channel is a subspace, where is the state Hilbert space, such that there exists another quantum channel with
where is the orthogonal projection onto . Here is known as the correction operation.
Read more about this topic: Quantum Error Correction
Famous quotes containing the words general and/or codes:
“Could anything be more indicative of a slight but general insanity than the aspect of the crowd on the streets of Chicago?”
—Charles Horton Cooley (1864–1929)
“I cannot help thinking that the menace of Hell makes as many devils as the severe penal codes of inhuman humanity make villains.”
—George Gordon Noel Byron (1788–1824)