Magnetic Molecules for Quantum Information

8:00 am – 11:00 am, Thursday March 20 // Session MAR-Q11 //Anaheim Convention Center, 155 (Level 1)

Chair:: Jonathan Friedman, Amherst College; Stephen Hill, Florida State University
Topics:
Sponsored by: GMAG
GMAG

A high-resolution spin-photon interface with molecular rare-earth ion qubits

9:12 am – 9:48 am

Presenter: Leah R Weiss (Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA)

Authors: Grant Smith (Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA), Ryan Murphy (Department of Chemistry, University of California, Berkeley, CA, USA), Bahman Golesorkhi (Department of Chemistry, University of California, Berkeley, CA, USA), José Méndez Méndez (Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA), Jeffrey Long (Department of Chemistry, University of California, Berkeley, CA, USA), David Awschalom (Pritzker School of Molecular Engineering and Department of Physics, University of Chicago, Chicago, IL, USA)

Coherent coupling of electron spins and photons requires spin-selective optical transitions that are robust to environmental noise. This bridge between microwave and optical frequencies can enable photon-mediated scaling and control in quantum technologies, as demonstrated in trapped atom, ion, and solid-state spin qubits. Molecular analogs of such systems hold promise as a nascent qubit platform that can leverage the tools of synthetic chemistry to tailor quantum properties, but have thus far been limited by broad, incoherent optical transitions. We describe the development of optically addressable molecular qubits utilizing a central spin-bearing rare-earth ion. We demonstrate coherent control of the spin ground-state and high-resolution spin-selective optical transitions. The resulting spin-optical interface enables high-contrast detection and direct optical control of ground-state spin polarization. Given the remarkable capacity for optical coherence with rare-earth ions, this demonstration provides a key step toward engineering coherent spin-photon coupling by chemical design.

PRESENTATIONS (5)