Related Experiment Video
Updated: Jan 16, 2026
10:52
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
10.1K
A high-resolution molecular spin-photon interface at telecommunication wavelengths
Leah R Weiss1, Grant T Smith1, Ryan A Murphy2,3
1Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, USA.
Science (New York, N.Y.)
|October 2, 2025
Summary
Researchers developed an organo-erbium spin qubit for quantum information science. This breakthrough enables optical control and readout of spin states using telecommunication light, paving the way for scalable quantum technologies.
Area of Science:
- Quantum Information Science
- Molecular Quantum Technologies
- Optically Addressable Spins
Background:
- Optically addressable electronic spins in molecules offer potential for scalable quantum computing.
- Optical state- and site-selection for molecular spin qubits remain a significant challenge.
Purpose of the Study:
- To introduce a novel organo-erbium spin qubit with high-resolution optical and spin transition coupling.
- To demonstrate optical spin polarization and readout for distinguishing spin states and sites.
Main Methods:
- Development of an organo-erbium spin qubit system.
- Utilizing narrow optical and spin transitions for coupling.
- Employing telecommunication-frequency light for qubit manipulation.
Main Results:
- Achieved megahertz-scale optical and spin transition coupling.
- Demonstrated optical spin polarization and readout.
- Successfully distinguished between spin states and magnetically inequivalent sites in a molecular crystal.
Conclusions:
- The developed spin-photon interface enables high-resolution access to spin degrees of freedom.
- Operation at telecommunication frequencies is compatible with existing photonic and microwave devices.
- This work presents an opportunity for engineering scalable, integrated molecular spin-optical quantum technologies.
