Venture capital for the quantum era.
18 West is an early-stage venture firm built around a single mission: backing the companies that will define the next frontier in computing. We invest across the quantum stack—computing, sensing, networking, and the enabling hardware and software underneath.
We invest in one category with high conviction.
Specialist
We focus only on quantum and the adjacent technologies that power it.
Full stack
We invest across quantum computing, sensing, networking, applications, and the foundational technologies underneath it.
Global
US-focused, globally oriented. We have backed exceptional teams across the US, Canada, the UK and the EU.
Patient
Category-defining companies take time to build. We are long-term partners, supporting founders through the journeys ahead.
We’ve backed companies powering the quantum future, from picks-and-shovels infrastructure to post-quantum security.
Quantum sensing for defense, navigation and early detection.
bandeliertech.com ↗
Vertically integrated AI and computing infrastructure.
crusoe.ai ↗
Quantum-safe cybersecurity software for communications and encryption.
evolutionq.com ↗
Identity and access security for the post-quantum era.
lastwall.com ↗
Enterprise-ready superconducting quantum computing.
oqc.tech ↗
Quantum networking infrastructure for distributed quantum computing.
qunnect.inc ↗
Quantum-accelerated AI servers for energy-efficient compute.
sygaldry.com ↗
Founders building in quantum, we want to hear from you.
info@18w.co