Physics – Quantum Physics
Scientific paper
2009-08-20
M.Siomau and S.Fritzsche, Eur. Phys. J. D 60, 417 (2010)
Physics
Quantum Physics
18 references
Scientific paper
10.1140/epjd/e2010-00226-1
An investigation of an optimal universal unitary Controlled-NOT gate that performs a specific operation on two unknown states of qubits taken from a great circle of the Bloch sphere is presented. The deep analogy between the optimal universal C-NOT gate and the `equatorial' quantum cloning machine (QCM) is shown. In addition, possible applications of the universal C-NOT gate are briefly discussed.
Fritzsche Stephan
Siomau Michael
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