Timeline for Question on Quantum Channels
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 24, 2017 at 11:42 | vote | accept | ABCD | ||
| Jun 13, 2017 at 11:34 | comment | added | Kenneth Goodenough | From the Stinespring dilation one can view a channel always as a unitary operation action on the state together with some state prepared in $|0>$ and then only given access to part of the system. Of course, one could always just 'throw away' part of the system. If one can perform the state preparation and unitary operation perfectly, then one can implement such a channel in a controlled manner. Normally of course you wouldn't want to apply a (non-unital) channel, but the channel just arises from you having to perform a certain operation in an imperfect manner. | |
| Jun 13, 2017 at 9:56 | history | answered | Kenneth Goodenough | CC BY-SA 3.0 |