Observation of coherent oscillation of a single nuclear spin and realization of a two-qubit conditional quantum gate

Abstract

Rabi nutations of a single nuclear spin in a solid have been observed. The experiments were carried out on a single electron and a single 13C nuclear spin of a single nitrogen vacancy defect center in diamond. The system was used for implementation of quantum logical NOT and a conditional two-qubit gate (CROT). Density matrix tomography of the CROT gate shows that the gate fidelity achieved in our experiments is up to 0.9, good enough to be used in quantum algorithms.

4 figures, replaced with revised version

References in corpus (7)

• Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance
• Coupled quantum dots as quantum gates
• Complete Characterization of a Quantum Process: the Two-Bit Quantum Gate
• Demonstration of conditional gate operation using superconducting charge qubits
• Nonclassical radiation from diamond nanocrystals
• Control of Spin Dynamics of Excitons in Nanodots for Quantum Operations
• Entanglement between an electron and a nuclear spin 1/2

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