SandboxAQ, a startup spun out of Alphabet that is developing post-quantum cryptography and simulation software for drug and material development, raised $500M
Context & Ripple Effects
In early 2022 Alphabet announced it would spin off its quantum group Sandbox under founder Jack Hidary, then a 55-person team; within a year that unit, renamed SandboxAQ, closed this $500M round as an independent company working on post-quantum cryptography plus simulation software for drug and material development.
The round turned out to be the base of a compounding stack: a $300M raise at a $5.6B valuation followed in December 2024, then a $150M Series E extension backed by Google and Nvidia pushed cumulative funding past $950M — while specialist quantum startups like Classiq and Aqemia raised far smaller checks in adjacent lanes.
First-order effects
- Hidary's team exits Alphabet's internal budget process with a half-billion-dollar independent balance sheet to build post-quantum cryptography and drug/materials simulation products.
- Alphabet validates a release-with-ties playbook: letting an internal research group raise private capital while keeping strategic proximity — Google itself later appeared among the follow-on backers.
Second-order effects
- Quantum toolmakers Classiq ($33M Series B) and Quantum Machines ($170M Series C) now benchmark fundraising against a rival whose single round exceeds either company's disclosed raise.
- In drug discovery, Aqemia's quantum-algorithm approach runs head-to-head with SandboxAQ's simulation software, pressuring molecule-focused startups to differentiate from a general-purpose platform.
Third-order effects
- If the pattern holds, more big-tech deep-tech units will launch as externally funded companies rather than internal skunkworks, converting parent R&D risk into minority stakes held by the former owner and its rivals alike.
- Post-quantum cryptography moves from an academic preparation exercise toward a productized enterprise market, with funded vendors racing to sell migration tooling before quantum machines threaten today's encryption.
The trend: Corporate deep-tech labs are being spun out of Alphabet-style parents into independently capitalized companies whose successive rounds compound toward billion-dollar war chests.