Monarch Quantum, founded in 2025 and based in San Diego, develops integrated photonics systems called Quantum Light Engines™ that provide precise photonic control for quantum computing, sensing, and networking. The company combines photonics components, systems engineering, and advanced packaging to move laboratory-scale photonics setups to manufacturable hardware. Monarch entered 2026 with more than $60 million in customer contracts from customers including Quantinuum, Infleqtion and NASA, bringing total capital and contracts to over $115 million after the $55 million growth round. Its customer base includes quantum OEMs, national laboratories, defense integrators, and advanced research institutions. Leadership is led by photonics veteran Dr. Timothy Day, whose prior team commercialized Daylight Solutions (acquired by Leonardo DRS in 2017). Monarch plans to scale production, expand its supply chain, and pursue global partnerships to become a core hardware infrastructure supplier for the quantum ecosystem.

Total raised

$55M

Funding rounds

1

Latest round

Equity

Latest activity

Mar 2026