You are warmly invited to attend the next seminar of the QST Seminar Series 2024/2025 in Naples.

Speaker: Giulio Campanaro, Alice and Bob , Paris, France

Title: "Dissipative cat qubits for quantum computing"

Time/Location: Thursday, June 19, 2025 at 14:00 in Aula 0M03  - Department of Physics - Federico II

Online: Online participation via MS Teams link.

   IMPORTANT: In case your access is denied, log out from your institutional account and open MS Teams in your web browser.

Abstract:

The hardware overhead of quantum error correction (QEC) is a major obstacle to building fault-tolerant quantum computers. Bosonic codes offer a solution by implementing error correction directly at the physical qubit level, significantly reducing hardware demands.
Dissipative cat qubits exponentially suppress bit-flip errors over orders of magnitude, leaving only phase-flip errors needing active correction. This approach could enable Shor's algorithm to run with 60 times fewer physical qubits than required by the surface code.
In this talk, I will summarise basic concepts of QEC, and introduce cat states as a promising encoding for hardware-efficient QEC. Finally, I will focus on the physical implementation of dissipative cat qubits and their built-in bit-flip error suppression.

Short Bio: Giulio Campanaro studied in the Universtiy of Milan for his master. He got his PhD in the university of Oxford, where he studied transmon devices in the group of Peter Leek. He joined Alice & Bob in 2022, with his focus on the development and realization of two-qubit gates for dissipatively stabilized cat states. Beyond that, he contributed to the development and refinement of transmon-free techniques for quantum tomography.