Research

Inspired by pioneering quantum optics experiments manipulating photon quantum states, we aim to perform analogous experiments with electrons in solid-state environments. These experiments are called "electron quantum optics", where we utilize the analogy with quantum optics while also investigating the differences between photons (bosons) and electrons (fermions). This comparison is important to understand the fundamental physics of these different particles when used in quantum systems. For instance, we have realized a quantum two-path interferometer and have demonstrated its operation as an electron flying qubit. A quantum two-path interferometer also allows for the probing of the transmission phase of electrons. Recently, we have focused on the manipulation of single flying electrons, employing two different types of single-electron sources, as detailed in the topics listed below. We study the dynamics of single flying electrons, with the aim of establishing quantum circuitry based on these electrons. 

Topics

• Electron Quantum Optics with Plasmon Wave Packets 

• Electron Quantum Optics with Surface Acoustic Waves 

• Transmission Phase across a Quantum Dot