SEEQC
SEEQC is a Superconducting Qubits company founded in 2019 and based in Elmsford, United States. It has raised $59.2M in total funding, most recently a Growth in 2025.
SEEQC builds chip-based superconducting quantum computers that move qubit readout, control, and error correction onto cryogenic Single Flux Quantum (SFQ) digital chips co-located with the qubits, replacing racks of room-temperature electronics and cabling. The company spun out of superconducting-electronics pioneer Hypres in 2019, inheriting a multi-layer commercial superconductor chip foundry in Elmsford, New York, and operates teams in London and Naples, where it unveiled Italy's first full-stack quantum computer, System Red, in April 2023. SEEQC has raised about $59M from investors including EQT Ventures, NordicNinja, Booz Allen Ventures, M Ventures (Merck), BlueYard Capital, and LG Technology Ventures, and works with NVIDIA on fully digital QPU-GPU integration for real-time error correction. In January 2026 it agreed to go public through a merger with SPAC Allegro Merger Corp. at a roughly $1 billion valuation with a ~$65 million PIPE, expected to close in the second quarter of 2026.
Its March 2025 demonstration with NVIDIA of the first end-to-end fully digital quantum-classical interface—direct chip-to-chip QPU-GPU communication with microsecond error-correction latency and roughly 1,000x less bandwidth—plus a pending ~$1B SPAC listing make SEEQC the flagship bet that digital SFQ chips, not racks of analog electronics, are how superconducting quantum computers scale.
seeqc.com ↗·Superconducting Qubits·
United States·private 
