Journal
MATERIALS FOR QUANTUM TECHNOLOGY
Volume 2, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/2633-4356/ac6b76
Keywords
polytypic control; x-ray diffraction; quantum wells; band engineering; chemical vapor deposition
Funding
- We thank Chris Anderson, Cyrus Zeledon, and Grant Smith for discussing their perspectives and for feedback on the manuscript. KJH, HH, and PZ acknowledge Laboratory Directed Research and Development (LDRD) funding from Argonne National Laboratory, provided
- Laboratory Directed Research and Development (LDRD) [DE-AC02-06CH11357]
- Office of Science, of the U.S. Department of Energy
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
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Silicon carbide (SiC) can be synthesized in different structural forms called polytypes, and controlling and varying these polytypes expands our ability to manipulate optically active defects in quantum information science. However, controlling polytypes during synthesis is challenging, and in situ monitoring of the synthesis process can greatly enhance our ability to formulate novel polytype structures.
Silicon carbide (SiC) can be synthesized in a number of different structural forms known as polytypes with a vast array of optically active point defects of interest for quantum information sciences. The ability to control and vary the polytypes during SiC synthesis may offer a powerful methodology for the formation of new material architectures that expand our ability to manipulate these defects, including extending coherence lifetimes and enhancing room temperature operation. Polytypic control during synthesis presents a significant challenge given the extreme conditions under which SiC is typically grown and the number of factors that can influence polytype selection. In situ monitoring of the synthesis process could significantly expand our ability to formulate novel polytype structures. In this perspective, we outline the state of the art and ongoing challenges for precision synthesis in SiC. We discuss available in situ x-ray characterization methods that will be instrumental in understanding the atomic scale growth of SiC and defect formation mechanisms. We highlight optimistic use cases for SiC heterostructures that will become possible with in situ polytypic control and end by discussing extended opportunities for integration of ultrahigh quality SiC materials with other semiconductor and quantum materials.
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