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Related Experiment Video

Updated: Jun 26, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Coherent particle transfer in an on-demand single-electron source.

J Keeling¹, A V Shytov, L S Levitov

¹Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom.

Physical Review Letters

|December 31, 2008

Summary

Electron transfer from quantum dots can create particle-hole excitations. However, specific driving protocols, like linear energy changes, can suppress these excitations, enabling noiseless particle transfer.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs

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Area of Science:

Quantum Information Science
Condensed Matter Physics
Nanotechnology

Background:

Electron transfer from quantum dots to conductors typically generates particle-hole excitations.
Understanding these excitations is crucial for quantum device applications.

Purpose of the Study:

Investigate the suppression of particle-hole excitations during electron transfer.
Explore conditions for achieving noiseless particle transfer.

Main Methods:

Studied a time-dependent resonance level coupled to Fermi sea states.
Analyzed electron transfer dynamics under varying energy protocols.

Main Results:

Particle-hole excitations can be suppressed by specific driving protocols.
Noiseless transfer is achieved when the resonance level's energy changes linearly with time (constant rapidity).

Conclusions:

Demonstrated a method to control and suppress particle-hole excitations.
Proposed a scheme for studying coherent particle transfer in quantum systems.