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Room-Temperature Optically Detected Coherent Control of Molecular Spins
Adrian Mena1,2, Sarah K Mann1, Angus Cowley-Semple1
1James Watt School of Engineering, <a href="https://ror.org/00vtgdb53">University of Glasgow</a>, Glasgow, G12 8QQ, United Kingdom.
Physical Review Letters
|October 7, 2024
Summary
Researchers optically detected molecular spin manipulation at room temperature using organic chromophores. This breakthrough enables high-contrast photoluminescence for advanced quantum sensing and imaging applications.
Area of Science:
- Quantum Information Science
- Materials Science
- Optoelectronics
Background:
- Optically interfaced molecular spins offer potential for quantum sensing and imaging.
- Optical detection of coherent spin manipulation at room temperature is crucial for practical applications.
Purpose of the Study:
- To optically detect coherent spin manipulation in molecular systems at room temperature.
- To demonstrate the potential of organic chromophores for room-temperature quantum technologies.
Main Methods:
- Utilizing the photoexcited triplet state of pentacene doped in p-terphenyl.
- Performing optical detection of spin manipulation in both molecular crystal and thin film configurations.
- Investigating multifrequency spin control techniques.
Main Results:
- Achieved optical detection of coherent spin manipulation with photoluminescence contrasts exceeding 15% at room temperature.
- Demonstrated the feasibility in both crystalline and thin-film organic materials.
- Showcased the potential for enhancing systems via multifrequency spin control.
Conclusions:
- Optically detected spin manipulation in organic chromophores is viable at room temperature.
- These findings pave the way for developing versatile, room-temperature quantum sensors.
- Synthetic chemistry offers a flexible route to engineer such quantum sensing platforms.
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