BiFrost

Bifrost Electronics is a Colorado-based quantum hardware company developing parametric amplifiers for the quantum readout chain. The company positions the traveling wave parametric amplifier (TWPA) as the first link in that chain and describes existing designs as fragile, bulky, difficult to manufacture and a constraint on qubit count. Its answer is a Strontium Titanate Parametric Amplifier (SPA) built on a patented strontium titanate platform that eliminates Josephson junctions.

The company's first product is the Heimdall amplifier, a non-Josephson-junction parametric amplifier marketed as compact, magnetically insensitive, quantum-limited and broadband. Bifrost states Heimdall is unaffected by magnetic fields well over 2 T, requires no magnetic shielding, and can therefore be packed densely inside a cryostat. For spin-qubit systems, the company describes surface-mount integration at 10 mK or 4 K, a lower noise floor than a high electron mobility transistor (HEMT), and the removal of loss and noise associated with coaxial lines and circulator arrays.

Beyond quantum computing, Bifrost markets the same amplifier technology for dual-use defense applications including satellite communications, radar and quantum sensing, and runs programs aimed at academic and research institutions. As of March 2026 the company said testing of the Heimdall amplifier was expected to be completed over the following several months, with commercial rollout anticipated in the second half of 2026.

Founding story

Two master's students at the Colorado School of Mines needed a parametric amplifier for their research but found available units too expensive and too fragile, so they built one themselves; the resulting smaller, more robust and more efficient amplifier became the basis for the company. The company's core technology originated from co-founder Connor Denney's work at the Colorado School of Mines. The name refers to Bifrost, the bridge in Norse mythology connecting the mortal realm to the heavens. [0][4][5]

Business model

Bifrost develops and manufactures parametric amplifier hardware for sale to organizations building or operating cryogenic quantum systems, with commercial rollout of its first product anticipated in the second half of 2026. It also runs scholarship and partnership programs intended to lower access barriers for academic and research laboratories. [0][4]

Traction

The company reported $2.5 million in seed funding in mid-2025 and a $250,000 Colorado OEDIT Early-Stage Capital and Retention grant in 2026. Its first product, the Heimdall amplifier, was in testing as of March 2026 with commercial rollout anticipated in the second half of 2026. The team spans R&D, nanofabrication, materials, RF and cryogenic systems engineering, and operates lab infrastructure including a 4 K cryostat. [3][4][5]

Latest developments

In March 2026 Bifrost announced that founding CEO and Board Chair Zenith Tillemann-Dick was departing and that Cody Moore, Head of Investments at Caruso Ventures, was appointed Interim CEO and Chairman while a search for a permanent CEO proceeds; Dan Caruso and co-founder Logan Pauli remain on the three-member board. In May 2026 the company announced it had won a $250,000 Colorado OEDIT Early-Stage Capital and Retention grant. [4][5]