Coherence of single spins coupled to a nuclear spin bath of varying density
By N. Mizuochi, P. Neumann, F. Rempp, J. Beck, V. Jacques, P. Siyushev, Kazuo Nakamura, Daniel J. Twitchen, Hideyuki Watanabe, S. Yamasaki and 2 more. 2008
169 citations recorded by the source corpus.
The dynamics of single electron and nuclear spins in a diamond lattice with different 13 C nuclear spin concentration is investigated. It is shown that coherent control of up to three individual nuclei in a dense nuclear spin cluster is feasible. The free-induction decays of nuclear spin Bell states and single nuclear coherences among 13 C nuclear spins are compared and analyzed. Reduction in a free-induction-decay time T2 and a coherence time T2 upon increase in nuclear spin concentration has been found. For pure diamond, T 2 as long as 30 s and T2 of up to 0.65 ms for the electron spin has been observed. The 13 C concentration dependence of T 2 is explained by Fermi contact and dipolar interactions with nuclei in the lattice. It has been found that T2 decreases approximately as 1 / n, where n is 13 C concentration, which corresponds to the reported theoretical line of T2 for an electron spin interacting with a nuclear spin bath.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/47f9e8bc0823b3c9a125a78410b573f1c884f5a9
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
Citations in the corpus
- Ultralong Dephasing Times in Solid-State Spin Ensembles via Quantum Control (2018, background): “due to the random location of (13)C within the diamond lattice [37,38].”
- Quantum register based on coupled electron spins in a room-temperature solid. (2010, background): “As a consequence, coherence between electron and nuclear spin qubits has been exploited for showing all basic elements of a room-temperature quantum registe”
- Decoherence of ensembles of nitrogen-vacancy centers in diamond (2020, background): “Sources of ensemble dephasing include interactions with nuclear C bath spins [10, 19, 30], crystal-lattice strain fields over the diamond [10, 31], and measurement-related artifacts such as magnetic field gradients over the collection volume and temperature fluctuations [10, 32].”
- Sensitivity optimization for NV-diamond magnetometry (2019, background): “Although experimental measurements relating T ∗2 to [13C] are only available for single NV- centers (Balasubramanian et al., 2009; Mizuochi et al., 2009) and not for NV- ensembles, the scaling in Eqn.”