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Wide dynamic range magnetic field cycler: Harnessing quantum control at low and high fields
1Department of Chemistry, University of California, Berkeley, California 94720, USA.
The Review of Scientific Instruments
|February 3, 2019
Summary
A new fast field cycling device enables rapid magnetic field sweeps for quantum applications. This versatile platform enhances nuclear hyperpolarization, quantum control, and sensing by combining low and high field spin dynamics.
Area of Science:
- Quantum physics
- Materials science
- Spectroscopy
Background:
- Spin dynamics exhibit distinct behaviors at low and high magnetic fields.
- Harnessing both low-field and high-field phenomena in a single experimental setup is challenging.
- Nitrogen-vacancy (NV) centers in diamond are promising for quantum applications.
Purpose of the Study:
- To develop a fast field cycling device for versatile spin dynamics studies.
- To enable low-field hyperpolarization of 13C nuclei in diamond using NV centers.
- To create a platform for quantum control, sensing, and information storage.
Main Methods:
- Construction of a fast field cycling device with a 1 nT-7 T magnetic field range.
- Implementation of a high-speed sample shuttling mechanism between a superconducting magnet and a magnetic shield.
- Utilizing optically pumped electronic spins of NV centers for hyperpolarization.
Main Results:
- The device achieves magnetic field sweeps over 4 orders of magnitude (∼1 mT to 7 T) in under 700 ms.
- Demonstrated capability for low-field hyperpolarization of 13C nuclei in diamond.
- The system allows access to arbitrary intermediate fields with high resolution.
Conclusions:
- The developed fast field cycling device is a versatile platform for exploring spin dynamics.
- This technology opens new avenues for nuclear hyperpolarization, quantum control, and sensing.
- The device facilitates the study of complementary low-field and high-field spin properties in a single experiment.
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