Identity channel

In quantum information theory, the identity channel is a noise-free quantum channel. That is, the channel outputs exactly what was put in.^[1]

The identity channel is commonly denoted as $I$ , ${\mathsf {id}}$ or $\mathbb {I}$ .

References

↑ Wilde, Mark (2013), Quantum Information Theory, Cambridge University Press, p. 618, ISBN 9781107034259 .

This article is issued from Wikipedia - version of the 10/25/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.