Quantum Circuits
AcquiredStability. Repeatability. Consistency.
New Haven, United States · Founded 2015 · $104.5M raised
- Headquarters
- New Haven, Connecticut
- Employees
- 11–50
- Founded
- 2015
- Business Model
- B2B
- Website
- quantumcircuits.com
- Total Funding
- $104.5M
- Last Round
- $60.0M Series BAug 2024
- Rounds
- 3
- Acquisition Date
- Jan 2026
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Quantum Circuits Inc. (QCI) built fault-tolerant quantum computers based on superconducting Dual-Rail Cavity Qubits with built-in error detection. QCI pioneered the industry's first dual-rail qubit with quantum error detection (QED), real-time control flow (RTCF), and error detection handling enabling high-fidelity algorithm execution. Founded at Yale University in 2015 by applied physicist Robert Schoelkopf, QCI was acquired by D-Wave Quantum Inc. in January 2026 for $550 million, forming the world's first dual-platform quantum computing company.
Summary
Quantum Circuits is a Hardware company based in New Haven, United States, founded in 2015. It has raised $104.5M in total across 3 rounds, most recently a $60.0M Series B round in Aug 2024. Investors include Sequoia Capital, ARCH Venture Partners and F-Prime Capital.
Tech & App Stack
4 technologies & apps tracked
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Funding & Exit History
Jan 2026
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Funding: Series A through Series B. Amounts, valuations, and investors where available.
Investors
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