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Akhtar W, Filidou V, Sekiguchi T, et al. Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon. Phys Rev Lett. 2012;108(9):097601doi: 10.1103/PhysRevLett.108.097601.
Akhtar, W., Filidou, V., Sekiguchi, T., Kawakami, E., Itahashi, T., Vlasenko, L., Morton, J. J., & Itoh, K. M. (2012). Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon. Physical review letters, 108(9), 097601. https://doi.org/10.1103/PhysRevLett.108.097601
Akhtar, Waseem, et al. "Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon." Physical review letters vol. 108,9 (2012): 097601. doi: https://doi.org/10.1103/PhysRevLett.108.097601
Akhtar W, Filidou V, Sekiguchi T, Kawakami E, Itahashi T, Vlasenko L, Morton JJ, Itoh KM. Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon. Phys Rev Lett. 2012 Mar 02;108(9):097601. doi: 10.1103/PhysRevLett.108.097601. Epub 2012 Feb 27. PMID: 22463668.
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Phys Rev Lett. 2012 Mar 02;108(9):097601. doi: 10.1103/PhysRevLett.108.097601. Epub 2012 Feb 27.

Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon.

Physical review letters

Waseem Akhtar, Vasileia Filidou, Takeharu Sekiguchi, Erika Kawakami, Tatsumasa Itahashi, Leonid Vlasenko, John J L Morton, Kohei M Itoh

Affiliations

  1. School of Fundamental Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohuku-ku, Yokohama 223-8522, Japan.

PMID: 22463668 DOI: 10.1103/PhysRevLett.108.097601

Abstract

Pulsed electron paramagnetic resonance spectroscopy of the photoexcited, metastable triplet state of the oxygen-vacancy center in silicon reveals that the lifetime of the m(s)=±1 sublevels differs significantly from that of the m(s)=0 state. We exploit this significant difference in decay rates to the ground singlet state to achieve nearly ~100% electron-spin polarization within the triplet. We further demonstrate the transfer of a coherent state of the triplet electron spin to, and from, a hyperfine-coupled, nearest-neighbor (29)Si nuclear spin. We measure the coherence time of the (29)Si nuclear spin employed in this operation and find it to be unaffected by the presence of the triplet electron spin and equal to the bulk value measured by nuclear magnetic resonance.

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