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

Abstract

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.

Authors:
 [1];  [1];  [1];  [2];  [3];  [4];  [4];  [4];  [1];  [5];  [4];  [4];  [6];  [1]
  1. Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
  2. Hungarian Academy of Sciences, Budapest (Hungary). Wigner Research Centre for Physics. Inst. for Solid State Physics and Optics
  3. Hungarian Academy of Sciences, Budapest (Hungary). Wigner Research Centre for Physics. Inst. for Solid State Physics and Optics; Linköping Univ. (Sweden). Dept. of Physics, Chemistry and Biology
  4. Linköping Univ. (Sweden). Dept. of Physics, Chemistry and Biology
  5. National Inst. for Quantum and Radiological Science and Technology, Takasaki (Japan)
  6. Hungarian Academy of Sciences, Budapest (Hungary). Wigner Research Centre for Physics. Inst. for Solid State Physics and Optics; Budapest Univ. of Technology and Economics (Hungary). Dept. of Atomic Physics
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States); Linköping Univ. (Sweden); National Inst. for Quantum and Radiological Science and Technology, Takasaki (Japan)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; US Army Research Office (ARO); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); Swedish Research Council (SRC); ÅForsk Foundation (Sweden); Carl-Trygger Foundation for Scientific Research (Sweden); Knut and Alice Wallenberg Foundation (Sweden); Swedish Energy Agency; Japan Society for the Promotion of Science (JSPS)
OSTI Identifier:
1366341
Alternate Identifier(s):
OSTI ID: 1418623
Grant/Contract Number:  
W911NF-15-2-0058; FA9550-15-1-0029; FA9550-14-1-0231; DMR-1420709; 621-2014-5825; 2016-04068; 16-576; CTS 15:339; KAW 2013.0300; 43611-1; 26286047
Resource Type:
Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 7; Journal Issue: 2; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; color centers; defects; quantum control; quantum information with solid state qubits; spintronics

Citation Formats

Christle, David J., Klimov, Paul V., de las Casas, Charles F., Szász, Krisztián, Ivády, Viktor, Jokubavicius, Valdas, Ul Hassan, Jawad, Syväjärvi, Mikael, Koehl, William F., Ohshima, Takeshi, Son, Nguyen T., Janzén, Erik, Gali, Ádám, and Awschalom, David D. Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon Interface. United States: N. p., 2017. Web. doi:10.1103/PhysRevX.7.021046.
Christle, David J., Klimov, Paul V., de las Casas, Charles F., Szász, Krisztián, Ivády, Viktor, Jokubavicius, Valdas, Ul Hassan, Jawad, Syväjärvi, Mikael, Koehl, William F., Ohshima, Takeshi, Son, Nguyen T., Janzén, Erik, Gali, Ádám, & Awschalom, David D. Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon Interface. United States. doi:10.1103/PhysRevX.7.021046.
Christle, David J., Klimov, Paul V., de las Casas, Charles F., Szász, Krisztián, Ivády, Viktor, Jokubavicius, Valdas, Ul Hassan, Jawad, Syväjärvi, Mikael, Koehl, William F., Ohshima, Takeshi, Son, Nguyen T., Janzén, Erik, Gali, Ádám, and Awschalom, David D. Fri . "Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon Interface". United States. doi:10.1103/PhysRevX.7.021046.
@article{osti_1366341,
title = {Isolated Spin Qubits in SiC with a High-Fidelity Infrared Spin-to-Photon Interface},
author = {Christle, David J. and Klimov, Paul V. and de las Casas, Charles F. and Szász, Krisztián and Ivády, Viktor and Jokubavicius, Valdas and Ul Hassan, Jawad and Syväjärvi, Mikael and Koehl, William F. and Ohshima, Takeshi and Son, Nguyen T. and Janzén, Erik and Gali, Ádám and Awschalom, David D.},
abstractNote = {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.},
doi = {10.1103/PhysRevX.7.021046},
journal = {Physical Review. X},
number = 2,
volume = 7,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevX.7.021046

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Cited by: 28 works
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