title: Measurable quantum geometric phase from a rotating single spin.
abstract: We demonstrate that the internal magnetic states of a single nitrogen-vacancy defect, within a rotating diamond crystal, acquire geometric phases. The geometric phase shift is manifest as a relative phase between components of a superposition of magnetic substates. We demonstrate that under reasonable experimental conditions a phase shift of up to four radians could be measured. Such a measurement of the accumulation of a geometric phase, due to macroscopic rotation, would be the first for a single atom-scale quantum system.
authors.affiliation: School of Physics, The University of Melbourne, Parkville, 3010, Australia.
authors.forename: D
authors.initials: D
authors.lastname: Maclaurin
authors.forename: M W
authors.initials: MW
authors.lastname: Doherty
authors.forename: L C L
authors.initials: LC
authors.lastname: Hollenberg
authors.forename: A M
authors.initials: AM
authors.lastname: Martin