Quantum Computing Inc.

IPO

Quantum Computing Inc

Headquarters
Leesburg, Virginia
Employees
51–200
Founded
2018
Business Model
B2B
Total Funding
$1.5B
Last Round
$750.0M Private EquityOct 2025
Rounds
4
Type
Public

About

Quantum Computing Inc. (QCi) (Nasdaq: QUBT) is an innovative, integrated photonics and quantum optics technology company that provides accessible and affordable quantum machines to the world. Founded in 2018 and headquartered in Leesburg, Virginia, QCi builds practical, scalable, room-temperature quantum photonics products that harness the quantum nature of light to capture data, compute complex problems, and communicate with unprecedented security. The company serves government and enterprise customers — including DARPA, the U.S. Navy, Air Force, Army, NASA, and the National Institute of Standards and Technology (NIST) — with solutions spanning quantum computing, quantum networking, quantum sensing, and quantum-powered AI. QCi operates a photonics foundry (the QCi Foundry) targeting a 150mm wafer line and has raised substantial capital in 2025 to support commercialization of its vertically integrated quantum photonic platform.

Summary

Quantum Computing Inc. is an enterprise software company based in Leesburg, United States, founded in 2018. It has raised $1.5B in total across 4 rounds, most recently a $750.0M Private Equity round in Oct 2025.

Tech & App Stack

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Funding History

Secondary MarketSecondary MarketNov 2025
$500.0M

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