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:
“A point has been reached where the peoples of the Americas must take cognizance of growing ill-will, of marked trends toward aggression, of increasing armaments, of shortening tempers—a situation which has in it many of the elements that lead to the tragedy of general war.... Peace is threatened by those who seek selfish power.”
—Franklin D. Roosevelt (1882–1945)
“Thou hast a voice, great Mountain, to repeal
Large codes of fraud and woe; not understood
By all, but which the wise, and great, and good
Interpret, or make felt, or deeply feel.”
—Percy Bysshe Shelley (1792–1822)