Quantum Circuits, Inc.
Building quantum computers designed to scale
77 employees · est. 2015 · New Haven, United States
Quantum Circuits, Inc. is the older company (2020 vs 2015); Alice & Bob is the larger of the two.
Side-by-Side Comparison
| Metric | Alice & Bob | Quantum Circuits, Inc. |
|---|---|---|
| Founded | ||
| Founded | 2020 | 2015 older |
| Headquarters | ||
| Headquarters | Paris, France | New Haven, United States |
| Employees | ||
| Employees | 248 larger | 77 |
| Industry | ||
| Industry | IT, Information Technology, Quantum | IT, Manufacturing, Quantum |
| Funding Stage | ||
| Funding Stage | Not Funded/Unknown | Acquired |
| Total Funding | ||
| Total Funding | $152.15M | $654.50M |
| Funding Rounds | ||
| Funding Rounds | 11 | 6 |
| Services | ||
| Services | Quantum Computer Design, Quantum Hardware Testing, Quantum Advantage Consultation, Error Correction Solutions | Quantum Error Detection, Real-Time Control Flow, Error Detection Handling, Development of Quantum Algorithms, Quantum Application Hosting |
| Target Customers | ||
| Target Customers | Tech Innovators, Research and Development Teams, Industries Preparing for Quantum Computing, High-Performance Computing Professionals | Quantum Researchers, Tech Companies, Developers in Quantum Computing, Businesses Exploring Quantum Solutions, Academic Institutions in Quantum Studies, Innovation-focused Enterprises |
| Taxonomy | ||
| Taxonomy | Quantum Computing, Cat Qubits, Error Correction, Fault-tolerant Computing, Universal Quantum Computers, Superconducting Circuits, Quantum Engineering, Research And Development, Innovation, Hardware Optimization, Scalable Quantum Solutions, Problem Solving, Technology Innovation, Quantum Physics, Computer Science | Quantum Computing, Superconducting Devices, Quantum Circuits, Error Correction, Scalable Architecture, Quantum Algorithms, Full-Stack Platform, Modular Architecture, Fault Tolerant Quantum Computing, Quantum Software, Quantum Hardware, Dual-Rail Qubit, Quantum Electrodynamics, RF Engineering, Mechanical Engineering |
| Website | ||
| Website | alice-bob.com | quantumcircuits.com |
About Alice & Bob
Alice & Bob, founded in 2020, is spearheading the quantum computing revolution with the motto, "Bringing mankind into the quantum world." Positioned as a leader in the sector, the company has effective solutions with its cat qubits that are inherently error-corrected. This innovative design signific...
About Quantum Circuits, Inc.
Quantum Circuits, Inc., headquartered in the United States, is at the forefront of the quantum computing revolution, developing a full-stack platform tailored for scalability using superconducting devices. Founded in 2015, the company's mission is encapsulated in its slogan: "Building quantum comput...
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Compiled from the BounceWatch company index. We last looked at Alice & Bob on 14 Nov 2025, and Quantum Circuits, Inc. on 2 Mar 2026. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.