Quantum computing startups in the United States

PsiQuantumPsiQuantum develops quantum computer using photonic qubits and silicon photonics to build fault-tolerant quantum computing systems.

PsiQuantum develops quantum computer using photonic qubits and silicon photonics to build fault-tolerant quantum computing systems.

Palo Alto, United States

OratomicOratomic is a quantum computing startup based in Pasadena, California, founded on March 31, 2026.

Oratomic is a quantum computing startup based in Pasadena, California, founded on March 31, 2026.

South Pasadena, United States

QuantinuumQuantinuum accelerates quantum computing and the development of applications across chemistry, cybersecurity, finance, and optimization.

Quantinuum accelerates quantum computing and the development of applications across chemistry, cybersecurity, finance, and optimization.

Broomfield, United States

QuEra ComputingQuEra Computing is a neutral-atoms-based quantum computing startup, located in Boston, near Harvard University.

QuEra Computing is a neutral-atoms-based quantum computing startup, located in Boston, near Harvard University.

Boston, United States

Atom ComputingAtom Computing is a quantum computing company based in Berkeley, California, with a commercial facility in Boulder, Colorado.

Atom Computing is a quantum computing company based in Berkeley, California, with a commercial facility in Boulder, Colorado.

Berkeley, United States

Rigetti ComputingRigetti Computing is a quantum computing company that builds and deploys full-stack quantum systems with superconducting qubits.

Rigetti Computing is a quantum computing company that builds and deploys full-stack quantum systems with superconducting qubits.

Berkeley, United States

Monarch QuantumMonarch Quantum, Inc.

Monarch Quantum, Inc.

San Diego, United States

QolabQolab is a quantum hardware company based in Los Angeles, California, with research activities in Madison, Wisconsin.

Qolab is a quantum hardware company based in Los Angeles, California, with research activities in Madison, Wisconsin.

Los Angeles, United States

Mesa QuantumMesa Quantum is a semiconductor company based in Boulder, Colorado, founded in 2023.

Mesa Quantum is a semiconductor company based in Boulder, Colorado, founded in 2023.

Bonita Springs, United States

ColdQuantaCold Quanta works in Cold Atom Quantum Technology, the most scalable, versatile, and commercially viable application of quantum.

Cold Quanta works in Cold Atom Quantum Technology, the most scalable, versatile, and commercially viable application of quantum.

Boulder, United States

memQmemQ is a Chicago-based quantum technology company focused on scalable, distributed quantum computing.

memQ is a Chicago-based quantum technology company focused on scalable, distributed quantum computing.

Chicago, United States

BlueQubitBlueQubit is a quantum software platform that offers software library for enterprise, defense, and academic customers.

BlueQubit is a quantum software platform that offers software library for enterprise, defense, and academic customers.

Los Angeles, United States

Photon QueuePhoton Queue is a quantum hardware startup founded in 2025, emerging from the University of Illinois Urbana-Champaign.

Photon Queue is a quantum hardware startup founded in 2025, emerging from the University of Illinois Urbana-Champaign.

Champaign, United States

QC82QC82 is a quantum computing startup based in College Park, Maryland, founded in 2020.

QC82 is a quantum computing startup based in College Park, Maryland, founded in 2020.

College Park, United States

Resilient EntanglementResillient Entanglement is R&D firm in the Quantum-Grid field.

Resillient Entanglement is R&D firm in the Quantum-Grid field.

Denver, United States