期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 45, 页码 15841-15844出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja507846k
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资金
- Northwestern University
- state of Illinois
- U.S. Department of Energy Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences [DE-AC02-06CH11357]
We report a vanadium complex in a nuclear-spin free ligand field that displays two key properties for an ideal candidate qubit system: long coherence times that persist at high temperature, T-2 = 1.2 mu s at 80 K, and the observation of quantum coherences from multiple transitions. The electron paramagnetic resonance (EPR) spectrum of the complex [V(C8S8)(3)](2) displays multiple transitions arising from a manifold of states produced by the hyperfine coupling of the S = 1/2 electron spin and I = 7/2 nuclear spin. Transient nutation experiments reveal Rabi oscillations for multiple transitions. These observations suggest that each pair of hyperfine levels hosted within [V(C8S8)(3)](2) are candidate qubits. The realization of multiple quantum coherences within a transition metal complex illustrates an emerging method of developing scalability and addressability in electron spin qubits. This study presents a rare molecular demonstration of multiple Rabi oscillations originating from separate transitions. These results extend observations of multiple quantum coherences from prior reports in solid-state compounds to the new realm of highly modifiable coordination compounds.
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