Coherent all-optical control of a solid-state spin via a double $\Lambda$-system

• URL: http://arxiv.org/abs/2402.00244v2
• Date: Sun, 4 Feb 2024 23:58:52 GMT
• Title: Coherent all-optical control of a solid-state spin via a double $\Lambda$-system
• Authors: C. Adambukulam and J. A. Scott and S. Q. Lim and I. Aharonovich and A. Morello and A. Laucht
• Abstract summary: All-optical control enables fast quantum operations on color center spins. Control via a double $Lambda$-system is applicable to other color centers and particularly, the group-IV defects in diamond.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: All-optical control enables fast quantum operations on color center spins that are typically realized via a single Raman transition in a $\Lambda$-system. Here, we simultaneously drive both Raman transitions in a double $\Lambda$-system to control the spin of a germanium vacancy (GeV) in diamond. In doing so, we achieve fast operations, observe the quantum interference between the two Raman transitions and probe the GeV coherence ($T_2^*=224\pm14$ ns, $T_2^{\rm H}=11.9\pm0.3$ $\mu$s). Importantly, control via a double $\Lambda$-system is applicable to other color centers and particularly, the group-IV defects in diamond.

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