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Results tagged with quantum-operation
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user 7655
For questions about quantum channels or more generally quantum maps and the related formalism. For questions about unitary operations, please use quantum-gate instead.
2
votes
2
answers
462
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Does the unitary freedom in choice of Kraus operators come from the freedom in the choice of...
Does the unitary freedom in the choice of Kraus operators for a given quantum channel just come from the unitary freedom in choice of purification of a quantum state?
Here's what I'm thinking. If I ha …
- 609
8
votes
1
answer
578
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Why does code switching not allow for universal fault-tolerant quantum computation?
In this paper, the authors briefly mention that one proposed method to bypass the Eastin-Knill theorem is to perform code-switching. That is, given codes $C_1$ and $C_2$ which permit a complementary s …
- 609
5
votes
1
answer
313
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Is the Eastin-Knill Theorem incorrect?
I am reading through this paper (the Eastin-Knill Theorem) and there is a step in the proof of the main theorem that I do not understand.
Let $Q$ be a composite quantum system supporting a quantum cod …
- 609