Omega: A manufacturable chipset for utility-scale quantum computing

Designed for fault-tolerance. Built in a tier-1 semiconductor fab. Engineered to scale.

Twenty years after our founding team demonstrated the first quantum transistor for photons, Omega marks the transition from laboratory experiment to manufacturable, scalable quantum hardware. Every component in Omega was designed from the ground up to meet the performance and integration thresholds of a fault-tolerant, million-qubit scale system.

Inside Omega

Blueprint Slider with Video

A Manufacturable Chipset

Omega integrates new materials and advanced components, including high-performance single photon sources, superconducting single photon detectors, and a next-generation optical switch, into a commercial semiconductor fab. Omega represents a foundational shift in an industry that is often seen as being confined to research labs — a high-fidelity, scalable platform on which we are now actively building the world’s first useful quantum computers. Learn more in our manuscript published in Nature.

COMPONENTS TESTED > 10M
Imagem do Chipset Omega

Switch

By actively selecting successful trials, and reconfigurable two-qubit and single-qubit measurements, optical switches power fusion-based-quantum-computing. Our BTO fabrication process produces world-class switches, meeting the ultra-low-loss and high-speed requirements.

LOSS ~ 100mdB & DC VπL ~ 0.6 V.cm

Edge Coupler

Our utility-scale quantum computer is built from many photonic chips, networked using standard optical fiber. Chip-to-fiber coupling must be ultra-low-loss.

We’ve reduced industry standard losses from ~50% to ~1%, enabling die-to-die networking at error-correction-compatible levels.

COUPLING LOSS ~ 50mdB

Detector

We use single photons as our quantum information carriers.

AA typical lightbulb emits a billion-billion photons per second, and we detect them one at a time.

Superconducting films, biased near their transition point, enable efficient single-photon detection. We have introduced near perfect superconducting film production into semi-conductor manufacturing, and now produce detectors at scale.

We’ve extended this to photon-number resolution, critical for entanglement and error reduction.

EFFICIENCY ~ 99%

Interferometer

We encode information in the photon's path: top waveguide for one, bottom for zero.

To perform gates and build switches, we control light by coupling, crossing, and delaying waveguides in complex networks called inteferometers.

Our inteferometers achieve 99.999% fidelity, well within error correction thresholds.

EXTINCTION RATIO > 50dB

Source

Telecom wavelength single photons power our machine, and we generate them in pairs using on-chip optical resonators pumped by strong laser pulses. The pump light is 100 billion times stronger than the signal, so we filter it out while allowing our photons to pass through with approximately 1% level loss.

The result: the world’s most identical photons, produced at scale.

SOURCE PURITY ~ 99.5%

Yielding record-breaking quantum performance metrics

99.98%

± 0.01% single-qubit SPAM fidelity   

Confirming near-perfect qubit initialization and readout 

99.5%

± 0.25% quantum interference visibility  

Proving the indistinguishability of photons from independent sources 

99.72%

± 0.04% chip-to-chip fidelity 

Demonstrating high-fidelity qubit transmission over optical fiber 

99.22%

± 0.12% two-qubit fusion fidelity  

Validating the accuracy of our entangling operations 

Retiring the chandelier

Scalable cryogenic infrastructure is a core challenge in quantum computing. While traditional systems rely on fragile, millikelvin “chandelier” dilution refrigerators, our photonic architecture enables a fundamentally different approach. We've replaced the chandelier with a high-power, manufacturable cryogenic module—closer in form to a datacenter rack and engineered for integration with industrial-scale cryoplants. Operating at 2–4 K, these modules support efficient, large-scale deployment of quantum systems. 

Chandelier

PsiQuantum’s modular cabinet

From Omega to utility-scale quantum systems

We’ve already characterized millions of devices on thousands of wafers and perform around half a million measurements each month. Now, we’re assembling the systems that will bring utility-scale fault-tolerant quantum computing to life—starting in Brisbane and Chicago. 

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