An On-Demand Coherent Single Electron Source

Abstract

We report on the electron analog of the single photon gun. On demand single electron injection in a quantum conductor was obtained using a quantum dot connected to the conductor via a tunnel barrier. Electron emission is triggered by application of a potential step which compensates the dot charging energy. Depending on the barrier transparency the quantum emission time ranges from 0.1 to 10 nanoseconds. The single electron source should prove useful for the implementation of quantum bits in ballistic conductors. Additionally periodic sequences of single electron emission and absorption generate a quantized AC-current.

References in corpus (3)

• Production and detection of entangled electron-hole pairs in a degenerate electron gas
• Mesoscopic one-way channels for quantum state transfer via the Quantum Hall Effect
• Time-controlled charge injection in a quantum Hall fluid

Cited by in corpus (11)

• Quantized dynamics of a coherent capacitor
• Shot noise of a mesoscopic two-particle collider
• Coherent Particle Transfer in an On-Demand Single-Electron Source
• Wave-packet Formalism of Full Counting Statistics
• Quantum to Classical Transition of the Charge Relaxation Resistance of a Mesoscopic Capacitor
• Heat production and current noise for single- and double-cavity quantum capacitors
• Elementary Charge Transfer Processes in Mesoscopic Conductors
• Dynamic scattering channels of a double barrier structure
• N-particle scattering matrix for electrons interacting on a quantum dot
• Hardy's Test versus the CHSH Test of Quantum Non-Locality: Fundamental and Practical Aspects
• Role of coherence in resistance quantization