Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon Interface

Funding Agencies|ARO [W911NF-15-2-0058]; AFOSR [FA9550-15-1-0029, FA9550-14-1-0231]; NSF MRSEC [DMR-1420709]; DOE LDRD Program; Swedish Research Council [621-2014-5825, 2016-04068]; AForsk foundation [16-576]; Carl-Trygger Stiftelse for Vetenskaplig Forskning [CTS 15:339]; Knut and Alice Wallenberg Foundation [KAW 2013.0300]; JSPS [26286047]; Swedish Energy Agency [43611-1]
The divacancies in SiC are a family of paramagnetic defects that show promise for quantum communication technologies due to their long-lived electron spin coherence and their optical addressability at near-telecom wavelengths. Nonetheless, a high-fidelity spin-photon interface, which is a crucial prerequisite for such technologies, has not yet been demonstrated. Here, we demonstrate that such an interface exists in isolated divacancies in epitaxial films of 3C-SiC and 4H-SiC. Our data show that divacancies in 4H-SiC have minimal undesirable spin mixing, and that the optical linewidths in our current sample are already similar to those of recent remote entanglement demonstrations in other systems. Moreover, we find that 3C-SiC divacancies have a millisecond Hahn-echo spin coherence time, which is among the longest measured in a naturally isotopic solid. The presence of defects with these properties in a commercial semiconductor that can be heteroepitaxially grown as a thin film on Si shows promise for future quantum networks based on SiC defects.

Klimov, Paul V.University of Chicago, IL 60637 USA (författare)
de las Casas, Charles F.University of Chicago, IL 60637 USA (författare)
Szasz, KrisztianHungarian Academic Science, Hungary (författare)
Ivády, ViktorLinköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Hungarian Academic Science, Hungary(Swepub:liu)vikiv58 (författare)
Jokubavicius, ValdasLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)valjo12 (författare)
Ul-Hassan, JawadLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)jawul47 (författare)
Syväjärvi, MikaelLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)miksy08 (författare)
Koehl, William F.University of Chicago, IL 60637 USA (författare)
Ohshima, TakeshiNational Institute Quantum and Radiol Science and Technology, Japan (författare)
Nguyen, Son TienLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)nguso90 (författare)
Janzén, ErikLinköpings universitet,Halvledarmaterial,Tekniska fakulteten(Swepub:liu)erija14 (författare)
Gali, AdamHungarian Academic Science, Hungary; Budapest University of Technology and Econ, Hungary (författare)
Awschalom, David D.University of Chicago, IL 60637 USA (författare)
University of Chicago, IL 60637 USAHungarian Academic Science, Hungary (creator_code:org_t)

Av författaren/redakt...: Christle, David ...; Klimov, Paul V.; de las Casas, Ch ...; Szasz, Krisztian; Ivády, Viktor; Jokubavicius, Va ...; visa fler...; Ul-Hassan, Jawad; Syväjärvi, Mikae ...; Koehl, William F ...; Ohshima, Takeshi; Nguyen, Son Tien; Janzén, Erik; Gali, Adam; Awschalom, David ...; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.