ÌÇÐÄTV

 

This workshop represents a defining moment in the emergence of compressively strained germanium on silicon (cs-GoS) as a scalable quantum technology platform. cs-GoS has moved beyond proof-of-principle materials science. It now demonstrates the essential ingredients of a scalable semiconductor quantum architecture: ultra-high-mobility two-dimensional hole system, electrically tuneable and inherently strong spin–orbit coupling, large and anisotropic g-factors, access to interaction-dominated regimes, and full compatibility with silicon processing infrastructure.

The central question is no longer whether cs-GoS can host spin qubits; it is how rapidly and effectively it can be transformed into a scalable circuit-level architecture.

This workshop is convened to consolidate the platform. It brings together leading figures in epitaxy, disorder control, mesoscopic transport, spin physics, qubit realisation, long-range coupling, nanofabrication, cryogenic control, and industrial integration. The objective is not incremental dissemination of results, but the deliberate alignment of the field around a coherent architectural vision. The workshop will rigorously benchmark cs-GoS against silicon and III–V approaches, critically examining its comparative advantages and limitations. It will assess the fundamental physical limits governing coherence and controllability, identify the principal materials, fabrication, and systems-level bottlenecks, and articulate the engineering milestones necessary to progress from small-scale demonstrations to architectures comprising thousands of qubits.

cs-GoS possesses a rare combination of physical advantages and technological compatibility. If strategically aligned, it offers a pathway to scalable, silicon-integrated quantum processors.This workshop, therefore, serves not simply as a scientific meeting, but as a declaration: cs-GoS is emerging as a coherent, internationally viable platform for scalable spin-based quantum circuits. Through extended lectures and structured, high-level discussion, the workshop is designed to articulate a shared roadmap for cs-GoS, from materials perfection to scalable quantum architectures. The ambition is clear: to establish cs-GoS not as one of many competing approaches, but as a coherent, internationally aligned platform capable of underpinning the next generation of silicon-compatible quantum processors.

Programme

 

Day 1: Materials, transport & spin physics foundations

 

08:45–09:15 Maksym Myronov (The University of ÌÇÐÄTV, UK)

Welcome & vision

 

Session I – Materials platform & benchmarking

 

09:15–10:15 Maksym Myronov

Epitaxy and Ultra-High-Mobility Hole Systems in cs-GoS (45 min + 15 min discussion)

 

10:15–11:15 Alex Hamilton

Benchmarking cs-GoS Hole System Against Si and III–V Platforms (45 min + 15 min discussion)

 

11:15–11:45 Coffee

 

Session II – Transport & interaction Physics

 

11:45–12:45 Mike Pepper

Many-Body Physics and Hole Transport in Low-Dimensional Systems (45 min + 15 min discussion)

 

12:45–14:00 Lunch

 

Session III – Theory & Spin–Orbit Control

 

14:00–15:00 Sergei Studenikin (NRC Canada)

g-Factor Engineering and Spin Properties in cs-GoS (45 min + 15 min discussion)

 

15:00–16:00 Gloria Platero

Theory of Hole Spins and Electrical Spin Control (45 min + 15 min discussion)

 

16:00–16:30 Coffee

 

16:30–17:30 Sougato Bose
Long-Range Coupling Mechanisms for Solid-State Spin Qubits

 

17:30–18:30 Moderated Discussion (All Day 1 Speakers)

Theme: Limits to coherence, control and materials perfection

 

18:45 Dinner

 

 Day 2: Qubits, fabrication & scalable architectures

 

Session IV – Realising Hole Spin Qubits

 

09:00–10:00 TBC (France)

Gate-Defined Hole Spin Qubits in cs-GoS

 

10:00–11:00 TBC (Japan)

Semiconductor Spin Qubit Architectures and Scaling

11:00–11:30 Coffee

 

Session V – Fabrication & Quantum Circuits

 

11:30–12:30 Nikolay Petkov

Nanofabrication Strategies for Scalable Spin Qubit Circuits

 

12:30–13:30 Leonid Rokhinson

Quantum Circuits and Hybrid Architectures in Semiconductor Platforms

 

13:30–14:30 Lunch

 

Session V – Emerging Directions & Topology

 

14:30–15:30 Greg Mazur
Emerging and Topological Phenomena in cs-GoS

 

15:30–16:00 Coffee

 

Session VI – Industrial Scaling & Control Infrastructure

 

16:00–17:00 Frederico Martins

High-Fidelity Control and Cryogenic Electronics for Spin Qubit Platforms

 

17:00–18:00 Charles Smith

An update on the quantum computing research at the Hitachi Cambridge Laboratory

 

18:00–18:45 Final Strategic Panel (All Speakers)

Theme: From 10 Qubits to 10,000 — What Must Be Solved in Materials, Devices and Control?

 

18:45 Dinner