All Questions
3
questions
-1
votes
3
answers
200
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Is entanglement a non-unitary transformation?
My question is motivated by the facts that measurement is a non-unitary transformation, and entanglement is necessary for measurement.
To clarify: I mean to say the transformation associated with the ...
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1
vote
0
answers
62
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Must all operators be Unitary? [closed]
Do all operators on a quantum state have to be unitary? Does this mean that there are non-unitary operators that act on quantum states in real life?
Context:
Let's say we have a composite quantum ...
- 143
3
votes
1
answer
166
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A question on the no-cloning theorem
When reading papers on the no-cloning theorem, I understand that one is searching for a unitary matrix $U$, such that for any state
$\vert \phi_A \rangle$ in a Hilbert state $H_A$, we have that
$U\...
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