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Broadband electrically detected magnetic resonance using adiabatic pulses
F M Hrubesch1, G Braunbeck1, A Voss1
1Walter Schottky Institut and Physik-Department, Technische Universität München, Am Coulombwall 4, 85748 Garching, Germany.
Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|April 2, 2015
Summary
We developed a versatile broadband microwave setup for electrically detected magnetic resonance (EDMR). This system enables precise control over electron spin resonance (ESR) and nuclear magnetic resonance (NMR) using shaped pulses and low power.
Area of Science:
- Physics
- Materials Science
- Quantum Information Science
Background:
- Electron spin resonance (ESR) and nuclear magnetic resonance (NMR) are powerful techniques for probing spin ensembles.
- Electrically detected magnetic resonance (EDMR) enhances sensitivity by detecting spin resonance through electrical signals.
- Achieving high-fidelity spin control requires advanced microwave delivery and pulse shaping capabilities.
Purpose of the Study:
- To present a novel broadband microwave setup for EDMR.
- To demonstrate the capability of applying arbitrarily shaped pulses for ESR and NMR.
- To achieve efficient spin excitation and control using low microwave power.
Main Methods:
- Development of a broadband microwave setup utilizing non-resonant stripline structures for on-chip delivery.
- Implementation of arbitrarily shaped microwave pulses, including adiabatic pulses like BIR4.
- Characterization of the setup's performance in the frequency range of 4 MHz to 18 GHz.
Main Results:
- Successful operation of the EDMR setup from 4 MHz to 18 GHz.
- Achieved π pulse times of 50 ns for ESR and 70 μs for NMR with 100 mW power.
- Demonstrated compensation for microwave magnetic field inhomogeneity using adiabatic pulses.
Conclusions:
- The developed setup offers a versatile platform for advanced EDMR experiments.
- Arbitrarily shaped pulses and adiabatic techniques enable high-fidelity spin control.
- This technology is applicable to studying spin ensembles, such as phosphorus donors in silicon.
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