Electrically driven nuclear spin resonance in single-molecule magnets

Abstract

Recent advances in addressing isolated nuclear spins have opened up a path toward using nuclear-spin-based quantum bits. Local magnetic fields are normally used to coherently manipulate the state of the nuclear spin; however, electrical manipulation would allow for fast switching and spatially confined spin control. Here, we propose and demonstrate coherent single nuclear spin manipulation using electric fields only. Because there is no direct coupling between the spin and the electric field, we make use of the hyperfine Stark effect as a magnetic field transducer at the atomic level. This quantum-mechanical process is present in all nuclear spin systems, such as phosphorus or bismuth atoms in silicon, and offers a general route toward the electrical control of nuclear-spin-based devices.

Molecular Spins in the Context of Quantum Technologies

“…More specifically, nuclear spin trajectories [52] and Ramsey fringes have been observed [53]. These results compare well with similar experiments reported for spin impurity (P donor) in Si [54] and witness a tangible contribution of molecular magnetism to QT.…”

“…By exploiting the long coherence time of nuclear spin (coherence time exceeding 60 μs) and the hyperfine electric Stark effect, the same team has then demonstrated that it is possible to manipulate the nuclear spin of a single molecule. More specifically, nuclear spin trajectories [52] and Ramsey fringes have been observed [53]. These results compare well with similar experiments reported for spin impurity (P donor) in Si [54] and witness a tangible contribution of molecular magnetism to QT.…”

Luminescence and Single‐Molecule‐Magnet Behaviour in Lanthanide Coordination Complexes Involving Benzothiazole‐Based Tetrathiafulvalene Ligands

“…[5][6][7] The origin of this keen interest comes from their particular magnetic characteristics (high magnetic moments and strong magnetic anisotropy) and specific luminescence. Both SMMs and luminescent materials have a plethora of potential applications, for example, high-density data storage, spintronics and quantum computing, [8][9][10][11][12][13][14][15] organic light-emitting diodes (OLEDs), [16] time-resolved fluoro-immunoassays, [17] biosensors [18,19] and time-resolved imaging. [20] In the molecular-magnetism field, the luminescence was recently exploited to provide a high level of comprehension of the magnetic properties.…”

Direct measurement of dysprosium(III)˙˙˙dysprosium(III) interactions in a single-molecule magnet

“…F ascinating physics has been observed in lanthanide-based molecules ranging from single nuclear spin detection and manipulation 1,2 , blocking of magnetization at unprecedentedly high temperatures for a molecule 3,4 , magnetic memory in chiral systems with a non-magnetic ground state 5,6 and energy barriers for loss of magnetization, U eff , an order of magnitude higher than observed for polymetallic d-block cages 7,8 . A diverse range of applications has been envisioned for lanthanide (Ln) containing molecules, including use as qubits for quantum information processing 9,10 and prototype devices such as molecular spin valves 11 and transistors 1 have been reported.…”