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A comment on Qusim.py – A toy multi-qubit quantum computer simulator written in Python. Parent comment

Re:Qusim.py – A toy multi-qubit quantum computer simulator w... by andrepd on Tuesday April 10, 2018 @12:34PM (#16802693)
Quantum gates are unitary because of conservation of probability (the out state must be remain normalized to 1). If it's also hermitian (equal to conjugate transpose) then it's its own inverse.
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