2023/12/14 by Marco Klotz, Richard Waltrich, Klotz, Marco +7 · 1 citation
Materials Science · Physics and Astronomy · Engineering · #Diamond and Carbon-based Materials Research #Advanced Fiber Laser Technologies #Laser Material Processing Techniques
paper · pdf · doi:10.48550/arxiv.2312.08967
The search for long-lived quantum memories, which can be efficiently interfaced with flying qubits is longstanding. One possible solution is to use the electron spin of a color center in diamond to mediate interaction between a long-lived nuclear spin and a photon. Realizing this in a nanodiamond furthermore facilitates the integration into photonic devices and enables the realization of hybrid quantum systems with access to quantum memories. Here, we investigated the spin environment of negatively-charged Silicon-Vacancy centers in a nanodiamond and demonstrate strong coupling of its electron spin, while the electron spin's decoherence rate remained below 1 MHz. We furthermore demonstrate multi-spin coupling with the potential to establish registers of quantum memories in nanodiamonds.