Photons on-demand
Deterministic light engines for scalable quantum systems
Qudara develops integrated, chip-scale technology based on semiconductor quantum dot photon sources for secure quantum communication, networking, and quantum computing.
What we build
One chip. Three building blocks.
Qudara brings the photon source, its pump laser, and the photonic circuitry together into a single, deterministic light engine — the foundation for quantum systems that scale.
01
Quantum-dot photon sources
Semiconductor quantum dots emit single, indistinguishable photons on demand — deterministic, not probabilistic.
02
Semiconductor pump lasers
Integrated drive lasers excite the sources on the same chip, with no bulky external optics or benchtop pump lasers.
03
Photonic integrated circuits
Low-loss waveguide circuits route, interfere, and network the photons across the chip — programmable by design.
01 + 02 + 03
Combined into a turnkey entanglement engine.
On one platform, the source, pump laser, and photonic circuit become a laser-integrated, plug-and-play module — deterministic photons in, ready-to-use entangled qubits out.
Why it matters
A deterministic photon engine any quantum system can benefit from.
On-demand entanglement is the missing ingredient for scaling photonic quantum computing and networking. Deterministic, wafer-scale sources provide a cheap, predictable quantum supply — clocked, synchronized, and ready to feed the compute architectures the field already trusts.
Clocked generation
Photons produced on a fixed clock — ready the moment the machine calls for them.
Synchronized before fusion
Emitters aligned in time, so photons arrive together for high-visibility interference.
Predictable resource supply
Low source uncertainty upstream of fusion and feedforward.
Clean cycle mapping
Source cycles map directly onto compute cycles — a tidy resource layer.
Determinism isn't a device upgrade — it's an architecture simplification.
Ready-to-fuse states
Deterministic preparation of cluster states, on demand.
Same compute fabric
A drop-in resource layer for established FBQC / MBQC architectures.
Turnkey & modular
Laser-integrated, plug-and-play entanglement engines — GHz distribution over fiber or free space.
Applications
The building blocks of a quantum internet.
Secure quantum communication
Entanglement-based keys, secure by the laws of physics. Any attempt to intercept them is detectable, keeping communication provably private.
Quantum networking
Linking quantum processors and sensors over fiber and free space. Connecting various types of quantum nodes through shared photonic channels.
Distributed quantum computing
Fusing many modules into one larger machine. Entangling processors across a network to scale beyond a single chip.
Why Qudara
The people and facilities to deliver.
Deterministic, wafer-scale quantum light is hard. Qudara pairs a world-leading team with hands-on access to world-class facilities — end-to-end, from material synthesis to packaged products.
Facilities
End-to-end prototyping
Building deterministic quantum light demands control at every step. Qudara's team has hands-on access to world-class facilities spanning the entire development cycle — from growing the semiconductor material to characterizing finished devices.
Molecular-beam epitaxy gives atomic-layer control over the quantum-dot material; a world-class cleanroom turns those wafers into integrated photonic devices; and multi-function single-photon and laser setups verify performance. We design and build our own packaging — drawing on partners where it helps — so we prototype and iterate end-to-end, in-house.
01
Materials synthesis
Molecular-beam epitaxy · precise material control
02
Device fabrication
World-class cleanroom · integrated photonics
03
Device testing
Single-photon & laser characterization
04
Packaging
Designed & built in-house
People
Leadership
Board
Chen Shang, Ph.D
CEO & Co-Founder
Expert in III–V materials and molecular-beam epitaxy, holding the current performance records for quantum-dot-based photonic devices.
Galan Moody, Ph.D
Chairman of the Board & Co-Founder
A world-leading scientist in integrated quantum photonics, behind the brightest chip-scale entanglement source demonstrated to date.
John Bowers, Ph.D
Board Member & Co-Founder
A seasoned scientist and entrepreneur — pioneer of heterogeneous III–V-on-silicon integration behind modern silicon photonics, and founder of multiple photonics companies.
Daniel Yum
Board Member
Principal at Playground Global, Qudara's first major investor. Brings deep experience building and scaling hardware-driven deep-tech companies, as both a founder and an investor.
Technical leads
Jon Geske, Ph.D
Chief Product Officer
Specializes in taking III–V semiconductor and photonic technologies from the lab into manufacturable products. Founded Aerius Photonics (acquired by FLIR) and led research at Attollo Engineering (acquired by Safran in 2025).
Mingxiao Li, Ph.D
VP of Research & Co-Founder
Expert in integrated photonics — heterogeneous semiconductor lasers, high-speed modulators, and wavelength converters across III–V, lithium niobate, and silicon nitride, with a focus on uniting these components on a single integrated platform.
Sahil Patel, Ph.D
Principal Scientist & Co-Founder
Quantum photonics expert specializing in solid-state quantum emitters and scalable photonic-qubit generation, integrating them into manufacturable photonic platforms for quantum networking, sensing, and computing.
The resource layer for scalable quantum systems.