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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.

Organising Committee

Workshop Chair

Maksym Myronov — The ¹û¶³´«Ã½, UK

Organisers

Parinaz Tabrizian — The ¹û¶³´«Ã½, UK

Sougato Bose— University College London (UCL), UK

Charles Smith— University of Cambridge / Hitachi Cambridge Laboratory, UK

Programme

 

Day 1: Materials, transport & spin physics foundations

 

08:45–09:15 Maksym Myronov (The ¹û¶³´«Ã½, UK)

Welcome & vision

 

Session I – Materials platform & benchmarking (Chair: Dr Parinaz Tabrizian)

 

09:15–10:15 Maksym Myronov

Epitaxy and Ultra-High-Mobility Hole System 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 (Chair: Professor Charles Smith)

 

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 (Chair: Dr Sabur Ayinde)

 

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 (45 min + 15 min discussion)

 

17:30–18:30 Moderated Discussion (All Speakers, Moderator: Professor Silvano de Franceschi)

Theme: Limits to coherence, control and materials perfection

 

18:45 Dinner

 

 Day 2: Qubits, fabrication & scalable architectures

 

Session IV – Realising Hole Spin Qubits (Chair: Dr Parinaz Tabrizian)

 

09:00–10:00 Silvano de Franceschi (Univ. Grenoble Alpes, CEA, France)

Hybrid devices and qubits in strained Ge/SiGe heterostructures (45 min + 15 min discussion)

10:00–11:00 Yuelin Xie (UCL, UK)

Progress Towards Hole Qubits in cs-GoS: Device Optimisation and Charge Sensing (45 min + 15 min discussion)

11:00–11:30 Coffee

 

Session V – Fabrication & Quantum Circuits (Chair: Dr Khaled Mnaymneh)

 

11:30–12:30 Nikolay Petkov

Nanofabrication Strategies for Scalable Spin Qubit Circuits (45 min + 15 min discussion)

 

12:30–13:30 Leonid Rokhinson

Towards exotic superconductivity within high mobility cs-GoS quantum material (45 min + 15 min discussion)

 

13:30–14:30 Lunch

 

Session V – Emerging Directions & Topology (Chair: Professor Leonid Rokhinson)

 

14:30–15:30 Greg Mazur
Emerging and Topological Phenomena in cs-GoS (45 min + 15 min discussion)

 

15:30–16:00 Coffee

 

Session VI – Industrial Scaling & Control Infrastructure (Chair: Professor Alex Hamilton)

 

16:00–17:00 Frederico Martins

High-Fidelity Control and Cryogenic Electronics for Spin Qubit Platforms (45 min + 15 min discussion)

 

17:00–18:00 Charles Smith

An update on the quantum computing research at the Hitachi Cambridge Laboratory (45 min + 15 min discussion)

 

18:00–18:45 Final Strategic Panel (All Speakers, Moderator: Professor Greg Mazur)

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

 

18:45 Dinner