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Conditional quantum logic using two atomic qubits

I. E. Protsenko·G. Reymond·N. Schlosser·P. Grangier
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Abstract

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 states, the reverse operation that is a Bell measurement, and a CNOT gate. We study the effect of atomic motion and multiple scattering, by evaluating Bell inequalities violations, and by calculating the CNOT gate fidelity.

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I. E. Protsenko, G. Reymond, N. Schlosser, P. Grangier. 2002-06-02. Conditional quantum logic using two atomic qubits. https://doi.org/10.1103/physreva.66.062306

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