Monarch Quantum
Delivering quantum light engines at scale
San Diego, United States · Founded 2025 · $76.0M raised
- Headquarters
- San Diego, California
- Employees
- 51–200
- Founded
- 2025
- Business Model
- B2B
- Website
- monarchquantum.com
- Total Funding
- $76.0M
- Last Round
- $55.0M Venture RoundApr 2026
- Rounds
- 2
About
Monarch Quantum is a San Diego-based integrated photonics company building Quantum Light Engines — compact, factory-aligned laser modules that consolidate hundreds of discrete optical components for quantum computing, sensing, and communications hardware. Founded in 2025 by photonics veteran Dr. Timothy Day, the company designs and manufactures its systems in-house using robotic assembly and machine learning–assisted processes, serving customers such as Quantinuum and Infleqtion.
Summary
Monarch Quantum is a Quantum Computing company based in San Diego, United States, founded in 2025. It has raised $76.0M in total across 2 rounds, most recently a $55.0M Venture Round round in Apr 2026. Investors include Serendipity Capital.
Tech & App Stack
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Funding History
Apr 2026
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Seed through Venture Round — per-round amounts, valuations, and who invested in each round.
Investors
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