Clock-controlled emission of single-electron wavepackets in a solid-state circuit

Abstract

We demonstrate the transmission of single electron wavepackets from a clock-controlled source through an empty high-energy edge channel. The quantum dot source is loaded with single electrons which are then emitted with high kinetic energy ($\sim$150 meV). We find at high magnetic field that these electron can be transported over several microns without inelastic electron-electron or electron-phonon scattering. Using a time-resolved spectroscopic technique, we measure the electron energy and wavepacket size at picosecond time scales. We also show how our technique can be used to switch individual electrons into different paths.

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• Driven coherent oscillations of a single electron spin in a quantum dot
• Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
• Single-parameter non-adiabatic quantized charge pumping
• Generation of energy selective excitations in quantum Hall edge states
• Relaxation of hot electrons in a degenerate two-dimensional electron system: transition to one-dimensional scattering
• Spectroscopy of electron flows with single- and two-particle emitters

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