Coherent state transfer between an electron- and nuclear spin in 15N@C60

Details Coherent state transfer between an electron- and nuclear spin in 15N@C60 Coherent state transfer between an electron- and nuclear spin in 15N@C60

2010-11-23

arxiv.org/abs/1011.5157v2

Physics

Condensed Matter

Materials Science

5 pages, 3 figures with supplementary material (8 pages)

Scientific paper

Electron spin qubits in molecular systems offer high reproducibility and the ability to self assemble into larger architectures. However, interactions between neighbouring qubits are 'always-on' and although the electron spin coherence times can be several hundred microseconds, these are still much shorter than typical times for nuclear spins. Here we implement an electron-nuclear hybrid scheme which uses coherent transfer between electron and nuclear spin degrees of freedom in order to both controllably turn on/off dipolar interactions between neighbouring spins and benefit from the long nuclear spin decoherence times (T2n). We transfer qubit states between the electron and 15N nuclear spin in 15N@C60 with a two-way process fidelity of 88%, using a series of tuned microwave and radiofrequency pulses and measure a nuclear spin coherence lifetime of over 100 ms.

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