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Multi-Particle Interference in an Electronic Mach-Zehnder Interferometer
Janne Kotilahti1, Pablo Burset1,2, Michael Moskalets3
1Department of Applied Physics, Aalto University, 00076 Aalto, Finland.
Entropy (Basel, Switzerland)
|July 2, 2021
Summary
Researchers explored multi-particle quantum effects in an electronic Mach-Zehnder interferometer using voltage pulses. They found that particle interactions create unique interference patterns, influencing current and visibility in mesoscopic circuits.
Area of Science:
- Quantum physics
- Mesoscopic electronics
Background:
- Dynamic single-electron sources enable manipulation of quantum properties.
- Understanding multi-particle interactions is crucial for quantum devices.
Purpose of the Study:
- Investigate multi-particle effects in an electronic Mach-Zehnder interferometer.
- Analyze interference current and visibility under pulsed voltage.
Main Methods:
- Utilized a Floquet scattering formalism.
- Decomposed multi-particle states into single-particle correlations.
- Evaluated interference current and visibility.
Main Results:
- Individual particles contribute independently to interference current.
- Visibility shows a Fraunhofer-like diffraction pattern due to multi-particle interference.
- Sequences of pulses create grid-like diffraction patterns.
Conclusions:
- Multi-particle interference significantly impacts interferometer output.
- Findings provide a framework for designing quantum electronic devices.
- Experimental verification of these effects is anticipated.
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