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Dissolution Dynamic Nuclear Polarization Instrumentation for Real-time Enzymatic Reaction Rate Measurements by NMR
Published on: February 23, 2016
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Electron-to-nuclear spectral mapping via dynamic nuclear polarization.
Arjun Pillai1, Moniish Elanchezhian1, Teemu Virtanen1
1Department of Chemistry, University of California Berkeley, Berkeley, California 94720, USA.
The Journal of Chemical Physics
|October 16, 2023
Summary
We developed a new method to read electronic spin spectra by transferring polarization to abundant nuclear spins. This technique enhances signal detection for applications like quantum sensing.
Area of Science:
- Quantum Information Science
- Solid-State Physics
- Spectroscopy
Background:
- Electronic spins are crucial for quantum technologies but challenging to read out directly.
- Nuclear spins offer advantages in abundance and lifetime for signal accumulation.
- Indirect readout strategies are needed to overcome limitations of direct electronic spin detection.
Purpose of the Study:
- To develop and demonstrate a novel method for indirectly reading electronic spin spectra.
- To leverage nuclear spins for enhanced signal-to-noise ratio in spectral readout.
- To explore applications of this technique in quantum sensing, such as magnetometry.
Main Methods:
- Polarization transfer from electronic spins to local nuclear spins.
- Utilizing nuclear magnetic resonance (NMR) techniques for readout.
- Employing spin-lock control on nuclear spins to enhance signal.
- Experimental demonstration using nitrogen vacancy (NV) center electrons in diamond and lattice 13C nuclei.
Main Results:
- Successfully demonstrated indirect readout of NV electron spin resonance (ESR) spectra via 13C nuclei.
- Achieved significantly enhanced signal-to-noise ratio using spin-lock control.
- Spectrally mapped readout proved to be background-free and robust against crystal orientation and optical scattering.
- Developed a theoretical model explaining the spectral mapping via Landau-Zener anti-crossings.
Conclusions:
- The developed ESR-via-NMR strategy offers a powerful tool for probing dilute electronic spin systems.
- The technique provides operational advantages for sensitive and robust spectral readout.
- Potential applications include advanced quantum memories, sensors, and particularly underwater magnetometry.
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