Robust CNOT gates from almost any interaction

Details Robust CNOT gates from almost any interaction Robust CNOT gates from almost any interaction

2006-10-09

arxiv.org/abs/quant-ph/0610059v2

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.98.180501

There are many cases where the interaction between two qubits is not precisely known, but single qubit operations are available. In this paper we show how, regardless of an incomplete knowledge of the strength or form of the interaction between two qubits, it is often possible to construct a CNOT gate which has arbitrarily high fidelity. In particular, we show that oscillations in the strength of the exchange interaction in solid state Si and Ge structures are correctable.

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