Journal article

Mechanical rotation via optical pumping of paramagnetic impurities

Pablo R Zangara, Alexander Wood, Marcus W Doherty, Carlos A Meriles

PHYSICAL REVIEW B | AMER PHYSICAL SOC | Published : 2019

Abstract

Hybrid quantum systems exhibiting coupled optical, spin, and mechanical degrees of freedom can serve as a platform for sensing, or as a bus to mediate interactions between qubits with disparate energy scales. These systems are also creating opportunities to test foundational ideas in quantum mechanics, including direct observations of the quantum regime in macroscopic objects. Here, we make use of angular momentum conservation to study the dynamics of a pair of paramagnetic centers featuring different spin numbers in the presence of a properly tuned external magnetic field. We examine the interplay between optical excitation, spin evolution, and mechanical motion, and theoretically show that..

View full abstract

University of Melbourne Researchers

Grants

Awarded by National Science Foundation (NSF)


Awarded by NSF CREST IDEALS


Awarded by Australian Research Council


Funding Acknowledgements

C.A.M. thanks E. Hahn, D. Sakellariou, A.Trabesinger, and A. Pines for stimulating his interest on the topic through early discussions, and, more recently, E. Chudnovsky for fruitful conversations on the ideas herein. P.R.Z. and C.A.M. acknowledge support from the National Science Foundation (NSF) through Grants No. NSF-1619896, No. NSF-1903839, and No. NSF-1914945, and from Research Corporation for Science Advancement through a FRED Award; they also acknowledge access to the facilities and research infrastructure of the NSF CREST IDEALS, Grant No. NSF-HRD1547830. A.W. acknowledges support from the University of Melbourne ECR mobility fellowship scheme. M.W.D. acknowledges support from the Australian Research Council (DE170100169).