2007/03/19 by J. Lehmann, Jörg Lehmann, Alejandro Gaita-Ariño +3 · 425 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Magnetism in coordination complexes #Materials science #Nanocluster Synthesis and Applications #Nanotechnology #Physics #Polyoxometalates: Synthesis and Applications #Quantum #Quantum computer #Quantum dot #Quantum mechanics #Qubit #Spin (aerodynamics) #Spins #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1038/nnano.2007.110
published in Nature Nanotechnology 2(5), 312-317 (Nature Portfolio) · 9 pages, 6 figures, to appear in Nature Nanotechnology
arxiv created 2007/03/19 · openalex publication_date 2007/05/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Spin qubits offer one of the most promising routes to the implementation of quantum computers. Very recent results in semiconductor quantum dots show that electrically-controlled gating schemes are particularly well-suited for the realization of a universal set of quantum logical gates. Scalability to a larger number of qubits, however, remains an issue for such semiconductor quantum dots. In contrast, a chemical bottom-up approach allows one to produce identical units in which localized spins represent the qubits. Molecular magnetism has produced a wide range of systems with tailored properties, but molecules permitting electrical gating have been lacking. Here we propose to use the polyoxometalate [PMo12O40(VO)2]q-, where two localized spins-1/2 can be coupled through the electrons of the central core. Via electrical manipulation of the molecular redox potential, the charge of the core can be changed. With this setup, two-qubit gates and qubit readout can be implemented.