Efficient purification protocols using iSWAP gates in solid-state qubits

Details Efficient purification protocols using iSWAP gates in solid-state qubits Efficient purification protocols using iSWAP gates in solid-state qubits

2008-07-30

arxiv.org/abs/0807.4788v1

Phys. Rev. A 78, 062313 (2008)

Physics

Quantum Physics

10 pages, 5 figures

Scientific paper

10.1103/PhysRevA.78.062313

We show an efficient purification protocol in solid-state qubits by replacing the usual bilateral CNOT gate by the bilateral iSWAP gate. We also show that this replacement can be applied to breeding and hashing protocols, which are useful for quantum state purification. These replacements reduce the number of fragile and cumbersome two-qubit operations, making more feasible quantum-information-processing with solid-state qubits. As examples, we also present quantitative analyses for the required time to perform state purification using either superconducting or semiconducting qubits.

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