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

By Fedor Jelezko, T. Gaebel, I. Popa, M. Domhan, A. Gruber, J. Wrachtrup. Physical Review Letters, 2004

648 citations recorded by the source corpus.

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.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/c7e52cd55c4cac0fd974f4000eb380f87bf8c3e1

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Citations in the corpus

Room-temperature coherent coupling of single spins in diamond (2006, methodology): “These include Rabi nutations of single electron and nuclear spins, quantum process tomography as well as a complete two-qubit quantum gate demonstration using a NV- 13 C ‘molecule&rsquo”
Enhanced single-photon emission from a diamond–silver aperture (2011, background): “Given the maturity of diamond nanofabrication techniques, it has also recently become possible to thin bulk diamond membranes to optically thick slabs on which planar resonators with embedded colour centres could be fabricate”
Processing quantum information in diamond (2006, background): “The important conclusion from figure 13 is that both electron and nuclear spin quantum states can be manipulated coherently and that large numbers of Rabi cycles can be observe dw ithin T2 .A sa result, either two spin quantum gates or specific electron–nuclear spin quantum states can be created ( J”
A quantum spin transducer based on nanoelectromechanical resonator arrays (2009, background): “The first term represents the bare Ising interactions,Φn(tg)=ηn(2)ωntg/4, whereas the second term in equation (6) describes additional geometric phases, which depend on the spin-echo pulse sequence.”
Isotope engineering of silicon and diamond for quantum computing and sensing applications (2014, background): “Germany performed a series of pioneering works on the qubit operations of single NV centers at room temperature.([7,9,102,103]) Their ground-breaking works were extended”