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Christle, D.*; Falk, A.*; Andrich, A.*; Klimov, P.*; Hassan, J.*; Son, N. T.*; Janzn, E.*; 大島 武; Awschalom, D.*
Nature Materials, 14(2), p.160 - 163, 2015/02
被引用回数:382 パーセンタイル:99.25(Chemistry, Physical)Carbon vacancy - silicon vacancy pair (V-V
) in silicon carbide (SiC) is regarded as a promising candidate for a qubit for quantum computing since V
-V
is thought to have electronic states with sharp optical and spin transitions. However, single spin operation using V
-V
has not yet been succeeded although it was revealed that V
-V
shows the characteristics as a single photon source (SPS). In this study, we studied spin properties of V
-V
created in SiC by 2 MeV-electron irradiation. First, we found V
-V
in SiC using a confocal microscope (CFM) and measured their optical detected magnet resonance (ODMR) at 20 K. Then, their spin coherence was measured from the standard two-pulse Hahn-echo sequence using ODMR. As a result, the spin coherence time exceeding 1 ms was obtained.