Quantum Control of the Tin-Vacancy Spin Qubit in Diamond
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Authors
Debroux, R
Michaels, CP
Purser, CM
Wan, N
Trusheim, ME
Arjona Martínez, J
Parker, RA
Stramma, AM
Chen, KC
De Santis, L
Alexeev, EM
Ferrari, AC
Englund, D
Gangloff, DA
Atatüre, M
Publication Date
2021Journal Title
Physical Review X
ISSN
2160-3308
Publisher
American Physical Society (APS)
Type
Article
This Version
VoR
Metadata
Show full item recordCitation
Debroux, R., Michaels, C., Purser, C., Wan, N., Trusheim, M., Arjona Martínez, J., Parker, R., et al. (2021). Quantum Control of the Tin-Vacancy Spin Qubit in Diamond. Physical Review X https://doi.org/10.1103/PhysRevX.11.041041
Abstract
Group-IV color centers in diamond are a promising light-matter interface for
quantum networking devices. The negatively charged tin-vacancy center (SnV) is
particularly interesting, as its large spin-orbit coupling offers strong
protection against phonon dephasing and robust cyclicity of its optical
transitions towards spin-photon entanglement schemes. Here, we demonstrate
multi-axis coherent control of the SnV spin qubit via an all-optical stimulated
Raman drive between the ground and excited states. We use coherent population
trapping and optically driven electronic spin resonance to confirm coherent
access to the qubit at 1.7 K, and obtain spin Rabi oscillations at a rate of
$\Omega/2\pi$=3.6(1) MHz. All-optical Ramsey interferometry reveals a spin
dephasing time of $T_2^*$=1.3(3)$\mu$s and two-pulse dynamical decoupling
already extends the spin coherence time to $T_2$=0.33(14) ms. Combined with
transform-limited photons and integration into photonic nanostructures, our
results make the SnV a competitive spin-photon building block for quantum
networks.
Keywords
quant-ph, quant-ph, cond-mat.mes-hall
Sponsorship
EPSRC (via University of Oxford) (EP/M013243/1)
European Commission Horizon 2020 (H2020) Future and Emerging Technologies (FET) (820378)
European Commission Horizon 2020 (H2020) ERC (884745)
Engineering and Physical Sciences Research Council (EP/K01711X/1)
Engineering and Physical Sciences Research Council (EP/K017144/1)
Engineering and Physical Sciences Research Council (EP/L016087/1)
Identifiers
External DOI: https://doi.org/10.1103/PhysRevX.11.041041
This record's URL: https://www.repository.cam.ac.uk/handle/1810/329649
Rights
Creative Commons Attribution Licence
Licence URL: https://creativecommons.org/licenses/by/4.0/
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