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Clock transitions guard against spin decoherence in singlet fission
Sina G Lewis1, Kori E Smyser2, Joel D Eaves2
1Department of Physics, University of Colorado Boulder, Boulder, Colorado 80309, USA.
The Journal of Chemical Physics
|November 21, 2021
Summary
Clock transitions (CTs) significantly enhance coherence times in quantum systems by dampening quantum noise. This study identifies CTs in molecules, crucial for advancing quantum computing and sensing technologies.
Area of Science:
- Quantum Information Science
- Molecular Physics
- Spectroscopy
Background:
- Short coherence times limit quantum computing and sensing.
- Clock transitions (CTs) in atomic systems improve coherence times.
- CTs arise from avoided crossings in Zeeman fields.
Purpose of the Study:
- Investigate CTs for dampening quantum noise in molecules.
- Explore CTs in electron paramagnetic resonance (EPR) experiments.
- Characterize CTs in a specific molecular system.
Main Methods:
- Theoretical analysis of quantum noise in molecular systems.
- Identification of CTs formed by conical intersections.
- Simulations of EPR experiments for spin-polarized photoproducts.
Main Results:
- Demonstrated that CTs can effectively reduce both intrinsic and extrinsic quantum noise.
- Reported a pair of CTs in a two-chromophore molecule.
- Analyzed CTs dependence on Zeeman field strength, molecular orientation, and geometry.
Conclusions:
- CTs offer a promising strategy to enhance coherence times in molecular quantum systems.
- The findings are relevant for developing robust quantum sensors and processors.
- Further research into molecular CTs can unlock new quantum applications.
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