Quantum AI Report

The convergence of Quantum with AI

Alice & Bob

Alice & Bob is a French quantum computing company developing superconducting qubits based on cat qubits, a type of bosonic qubit designed to be inherently resistant to bit-flip errors. The company's hardware approach aims to reduce the overhead required for error correction by engineering a biased-noise qubit, potentially enabling more efficient fault-tolerant quantum computers. Founded in 2020, it is one of several startups pursuing superconducting circuits, but distinguishes itself by focusing on cat qubits rather than conventional transmon qubits.

AI-written profile · not yet reviewed · 3 October 2026

Headquarters
Paris, France
Founded
2020
Status
Private
superconducting

Coverage

The Quantum Insider

Alice & Bob Demonstrates New Approach to Stabilizing Cat With DC Voltage Bias

Alice & Bob, with the École Normale Supérieure de Lyon, demonstrated a DC-voltage-bias method for stabilising superconducting cat qubits. The technique is reported to be faster than prior approaches and to enable more compact designs that generate less heat. Cat qubits encode information in microwave resonators, and the work is aimed at fault-tolerant superconducting hardware.

OutlookPlausible

This could allow Alice & Bob to pack more cat qubits into a single dilution refrigerator within two years because lower heat dissipation per qubit eases the cooling budget that currently constrains superconducting scaling.

superconductingcryogenics controlerror correctionAlice & BobÉcole Normale Supérieure de Lyon