Print Email Facebook Twitter Efficient controlled-phase gate for single-spin qubits in quantum dots Title Efficient controlled-phase gate for single-spin qubits in quantum dots Author Meunier, T. Calado, V.E. Vandersypen, L.M.K. Faculty Applied Sciences Department QN/Quantum Nanoscience Date 2011-03-10 Abstract Two-qubit interactions are at the heart of quantum information processing. For single-spin qubits in semiconductor quantum dots, the exchange gate has always been considered the natural two-qubit gate. The recent integration of a magnetic field or g-factor gradients in coupled quantum dot systems allows for a one-step, robust realization of the controlled-phase (C-phase) gate instead. We analyze the C-phase gate durations and fidelities that can be obtained under realistic conditions, including the effects of charge and nuclear field fluctuations, and find gate error probabilities of below 10-4, possibly allowing fault-tolerant quantum computation. To reference this document use: http://resolver.tudelft.nl/uuid:1400b45a-322e-45d9-91d5-d28037b3788b DOI https://doi.org/10.1103/PhysRevB.83.121403 Publisher American Physical Society ISSN 1098-0121 Source http://link.aps.org/doi/10.1103/PhysRevB.83.121403 Source Physical Review B, 83 (12), 2011 Part of collection Institutional Repository Document type journal article Rights © 2011 The Author(s)American Physical Society Files PDF Calado_2011.pdf 296.02 KB Close viewer /islandora/object/uuid:1400b45a-322e-45d9-91d5-d28037b3788b/datastream/OBJ/view