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

Abstract

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.

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

References in corpus (8)

• Experimental demonstration of quantum memory for light
• Strong Coupling of a Spin Ensemble to a Superconducting Resonator
• High cooperativity coupling of electron-spin ensembles to superconducting cavities
• Solid state quantum memory using the 31P nuclear spin
• Bang-bang control of fullerene qubits using ultra-fast phase gates
• Entanglement in a Solid State Spin Ensemble
• Environmental effects on electron spin relaxation in N@C60
• Quantum non-demolition measurements of single donor spins in semiconductors

Cited by in corpus (11)

• Coherent storage of microwave excitations in rare-earth nuclear spins
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• Storing quantum information in spins and high-sensitivity ESR
• Normal-mode splitting in the coupled system of hybridized nuclear magnons and microwave photons
• Hybrid quantum circuit with implanted erbium ions
• Quantum Computing with Endohedral Fullerenes
• Quantum control in spintronics
• Stimulated Raman Adiabatic control of a nuclear spin in diamond
• Demonstrating experimentally the encoding and dynamics of an error-correctable logical qubit on a hyperfine-coupled nuclear spin qudit
• Extending the Electron Spin Coherence Time of Atomic Hydrogen by Dynamical Decoupling
• Radio-frequency capacitance spectroscopy of metallic nanoparticles