CavilinQ Raises $8.8M to Develop Modular Quantum Interconnects

Cambridge startup's funding will expand team and establish specialized lab for production-ready prototypes.

Apr. 2, 2026 at 11:14pm

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A highly detailed, glowing 3D illustration of interconnected geometric shapes in neon cyan and magenta, representing the modular architecture of CavilinQ's quantum computing system.CavilinQ's modular quantum interconnect technology aims to unify isolated quantum processors into a high-performance distributed system.Cambridge Today

CavilinQ, a Cambridge-based hardware startup, has closed an $8.8 million seed funding round led by QVT, with participation from Safar Partners, MFV Partners, Serendipity Capital, and Harper Court Ventures. The company is developing interconnect hardware designed to link multiple quantum processors, addressing the physical scaling limitations inherent in single-processor architectures.

Why it matters

CavilinQ's modular architecture mirrors classical distributed computing, using high-speed interconnects to bypass the power and space constraints of individual quantum processors. By establishing a high-speed networking layer, the company aims to provide the foundational infrastructure required for fault-tolerant quantum computing at scale.

The details

The company's technical approach involves cavity-enhanced photonic links that create high-fidelity light-matter interfaces. These interconnects are intended to unify isolated quantum processors into a single distributed system, effectively operating as a modular, high-performance cluster. While the technology is designed to be platform-agnostic, CavilinQ's initial demonstrations will focus on integration with neutral atom quantum processors.

  • The $8.8 million seed funding round was closed on April 2, 2026.

The players

CavilinQ

A Cambridge-based hardware startup developing interconnect technology to link multiple quantum processors.

Dr. Mikhail Lukin

Co-founder of CavilinQ and professor at Harvard University, whose academic research has focused on quantum networking and many-body physics.

Dr. Hannes Bernien

Co-founder of CavilinQ and professor at the University of Chicago, whose academic research has focused on quantum networking and many-body physics.

QVT

The lead investor in CavilinQ's $8.8 million seed funding round.

Safar Partners

An investor in CavilinQ's $8.8 million seed funding round.

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What’s next

CavilinQ plans to use the funding to establish a specialized laboratory in Cambridge, MA, and expand the engineering team to support the development of production-ready prototypes of its modular quantum interconnect technology.

The takeaway

CavilinQ's modular approach to quantum computing, which leverages high-speed interconnects to link multiple quantum processors, represents a critical step towards realizing the full potential of fault-tolerant quantum computing at scale.