Observing quantum oscillation of ground states in single molecular magnet.
PHYSICAL REVIEW LETTERS 2012;
108:230501. [PMID:
23003928 DOI:
10.1103/physrevlett.108.230501]
[Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Indexed: 06/01/2023]
Abstract
Single molecular magnets (SMMs) are among the potential systems for quantum memory and quantum information processing. Quantum coherence and oscillation are critical for these applications. The ground-state quantum coherence and Rabi oscillations of the SMM V15 ([V15(IV)As6(III)O42(H2O)]6-) have been studied in this context. We have affirmatively measured at 2.4 K the Rabi quantum oscillations and coherence time T2 for the ground states of the V15 ion of collective spin S=1/2, in addition to confirming the previously reported results for the S=3/2 excited states. The oscillations of S=3/2 and S=1/2 states are of different frequencies, and so can be separately selected for purposive manipulations. T2 of 188±4 ns (S=3/2) and 149±10 ns (S=1/2) are much less than T1∼12 μs and are further extendible via various approaches for qubit implementations.
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