Abstract:
:The push for a semiconductor-based quantum information technology has renewed interest in the spin states and optical transitions of shallow donors in silicon, including the donor bound exciton transitions in the near-infrared and the Rydberg, or hydrogenic, transitions in the mid-infrared. The deepest group V donor in silicon, bismuth, has a large zero-field ground state hyperfine splitting, comparable to that of rubidium, upon which the now-ubiquitous rubidium atomic clock time standard is based. Here we show that the ground state hyperfine populations of bismuth can be read out using the mid-infrared Rydberg transitions, analogous to the optical readout of the rubidium ground state populations upon which rubidium clock technology is based. We further use these transitions to demonstrate strong population pumping by resonant excitation of the bound exciton transitions, suggesting several possible approaches to a solid-state atomic clock using bismuth in silicon, or eventually in enriched (28)Si.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Saeedi K,Szech M,Dluhy P,Salvail JZ,Morse KJ,Riemann H,Abrosimov NV,Nötzel N,Litvinenko KL,Murdin BN,Thewalt MLdoi
10.1038/srep10493subject
Has Abstractpub_date
2015-05-20 00:00:00pages
10493issn
2045-2322pii
srep10493journal_volume
5pub_type
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