1. Color center in <bold>ß</bold>-Ga2O3 emitting at the telecom range
- Author
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Stehr, Jan Eric, Jansson, Mattias, Pearton, S. J., McCloy, J. S., Jesenovec, J., Dutton, B. L., McCluskey, M. D., Chen, Weimin, Buyanova, Irina, Stehr, Jan Eric, Jansson, Mattias, Pearton, S. J., McCloy, J. S., Jesenovec, J., Dutton, B. L., McCluskey, M. D., Chen, Weimin, and Buyanova, Irina
- Abstract
Transition metal (TM) ions incorporated into a host from a wide bandgap semiconductor are recognized as a promising system for quantum technologies with enormous potential. In this work, we report on a TM color center in beta-Ga2O3 with physical properties attractive for quantum information applications. The center is found to emit at 1.316 mu m and exhibits weak coupling to phonons, with optically addressable higher-lying excited states, beneficial for single-photon emission within the telecom range (O-band). Using magneto-photoluminescence (PL) complemented by time-resolved PL measurements, we identify the monitored emission to be internal E-1 ->(3)A(2) spin-forbidden transitions of a 3d(8) TM ion with a spin-triplet ground state-a possible candidate for a spin qubit. We tentatively attribute this color center to a complex involving a sixfold coordinated Cu3+ ion., Funding Agencies|Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoeping University [2009 00971]; Department of Energy, Office of Basic Energy Sciences, Division of Materials Science and Engineering [DE-FG02-07ER46386]; Air Force Office of Scientific Research [FA9550-21-1-0078]; Department of the Defense, Defense Threat Reduction Agency [HDTRA1-20-2-0002]
- Published
- 2024
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