Phys. Rev. A 66, 062306 (2002) [11 pages]Conditional quantum logic using two atomic qubitsReceived 2 June 2002; published 9 December 2002 In this paper we propose and analyze a feasible scheme where the detection of a single scattered photon from two trapped atoms or ions performs a conditional unitary operation on two qubits. As examples we consider the preparation of all four Bell’s states, the reverse operation that is a Bell’s measurement, and a controlled-NOT (CNOT) gate. We study the effect of atomic motion and multiple scattering by evaluating Bell’s inequalities violations and by calculating the CNOT gate fidelity. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.062306
DOI:
10.1103/PhysRevA.66.062306
PACS:
03.67.-a, 32.80.Pj, 03.65.Ud, 42.50.-p
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