Events

A surface acoustic wave is surprisingly efficient to transport a single electron between distant quantum dots while preserving in flight its quantum coherent properties. The acousto-electric shuttling technique provides thus a perfect testbed to investigate the feasibility of electron-flying-qubit implementations. In my PhD defence I will present our latest results on SAW-driven single-electron transport in a circuit of coupled quantum rails. Mastering picosecond triggering of the transfer process verified via time-of-flight measurements, we are capable of synchronising transport along parallel quantum rails. Sending two electrons simultaneously through the coupling region, we observe distinct Coulomb-dominated repulsion – the central ingredient to realise a controlled phase gate for electron flying qubits. In addition, we demonstrate SAW engineering via chirp synthesis enabling single-electron transport with a solitary electro-acoustic pulse. Our results lay the ground for quantum logic circuits with electron flying qubits surfing on sound.