EeroQ Demonstrates World's First Electron-on-Helium Qubit

EeroQ has announced a significant breakthrough in quantum computing with the physical demonstration of an electron-on-helium (eHe) qubit. This modality, which uses electrons bound to the surface of superfluid helium as qubits, has long been a theoretical concept. The company's recent technical paper, published in Nature Physics, details the successful demonstration of strong coupling between a microwave photon and an electron on helium, providing a necessary mechanism to read out the qubit's state using a cavity-based amplification technique.

This development marks a milestone for the company, which aims to leverage the unique advantages of eHe technology, including long coherence times, compact qubit size, and CMOS compatibility. By focusing on perfecting individual qubits and gate operations on small-scale chips, EeroQ believes it can rapidly scale its systems to thousands of qubits, avoiding the common challenge of simultaneously scaling the number and quality of qubits. Future plans involve demonstrating actual gate operations using this platform.

Source: quantumcomputingreport.com
Publication date: 16.06.2026
Author: dougfinke