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Live seminar
21 Jan 2026
11:00:00
Remote coupling of quantum dot spin qubits via a superconducting qubit coupler
Dr. Holly Stemp
Postdoctoral Associate, Research Laboratory of Electronics
Description
Gate-defined quantum dots represent a promising candidate for a scalable qubit platform. A key advantage of quantum dots is their small physical footprint, which could enable the integration of many millions of qubits on a single chip. However, this high qubit density creates challenges in routing the on-chip classical control signals needed to scale these systems to a size capable of solving problems of real-world relevance. To address this, long-range spin coupling mechanisms are needed to connect spatially sparse arrays of spin qubits. We propose a novel coupling scheme in which a superconducting qubit mediates interactions between distant quantum dot spin qubits. To implement this approach, we have developed a hybrid semiconductor–superconductor measurement architecture, drawing on established engineering practices from the superconducting qubit community. In this seminar, we will present our co-designed system for hybrid qubit measurements. We will also discuss our progress toward 3D integration of the two qubit types via flip-chip bonding, a key milestone toward realizing hybrid quantum devices.
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Speaker
Dr. Holly Stemp
Postdoctoral Associate, Research Laboratory of Electronics
Bio
Holly Stemp carried out her PhD in the group of Professor Andrea Morello at the University of New South Wales in Sydney, Australia, where her project consisted of characterizing multi-qubit operations in a system of two exchange-coupled donor spin qubits. In her role as a postdoctoral associate in Professor William Oliver’s Engineering Quantum Systems group at MIT, Holly is focused on designing and implementing hybrid spin/superconducting qubit architectures.
Host
Katia Moskvitch
Communications director
Bio
Katia Moskvitch is the Director of Communications at Quantum Machines, where she leads the company’s global communications strategy, brand narrative, and external relations across media, analysts, partners, and the broader quantum technology ecosystem. She oversees strategic content development, thought leadership initiatives, and the company’s public positioning.
Katia is an award-winning science and technology journalist with more than 15 years of experience writing for Nature, BBC Future, New Scientist, Wired, Scientific American, and Quanta Magazine. Before joining Quantum Machines, she led editorial strategy and communications for several deep-tech and advanced research organizations, translating complex scientific innovation into clear narratives for global audiences.
Her journalistic work has spanned quantum computing, physics, space science, AI, cybersecurity, and emerging technologies, and her reporting has been featured in leading publications worldwide. Katia is also the author of Neutron Stars: The Quest to Understand the Zombies of the Cosmos, a nonfiction book blending science, history, and human relationships.
Live seminar
21 Jan 2026
11:00:00