Case Studies
Read about case studies using our proprietary design technology such as the SiNQ PDK where we developed an expansive photonic PDK spanning 493–1550 nm, developed in just 3 weeks.
Wave Photonics releases expansive PDK for quantum technologies
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Case Study 1:
SiNQ PDK - A Silicon Nitride Process and PDK for Quantum Photonics
Wave Photonics offers a 200nm SiN PDK on a process established at CORNERSTONE and designed for quantum applications. Users can access the process via the expansive PDK which we developed, which contains 1,056 elements and covers 33 wavelengths from 493nm – 1550nm. It targets the transition wavelengths of a huge array of quantum systems, including NV centres and other diamond defect centres, multiple ions, quantum dots, rubidium, and a variety of other systems and emitters. The PDK includes bi-wavelength crossings to allow the crossing of waveguides between any pair of wavelengths – it’s possible to have overlapping circuits of 33 different wavelengths on the same chip!
Wavelengths and systems supported
493
1310
866
852
854
795
1127
850
1033
780
785
807
λ(nm)
Fibre
Emitter(s)/System
532
1468
1550
Your
895
980
880
920
1064
1092
552
589
589
602
614
619
645
637
650
674
700
738
729
PbV – Lead vacancy
NV spin, CsPbBr3 nanocrystal
Na+ cooling
Ba+ qubit transition
SiV – Silicon vacancy
Ba+ repump, NV centres
NV centre phonon sideband
NV centre ZPL peak
Cs cooling
WSe2
DBT anthracene
Nd3+ rare earth
Ca+ repump
Sr+ repump
InAs/GaAs QDs
Comms, Free space comms
Rb cooling
Ca+ qubit
Sr+ qubit manipulation
SPDC pump
Sr+ repump
3C-SiC DV colour centre
3C-SiC NV colour centre
InAs/InP QDs, Er3+, datacoms
Contact us here info@wavephotonics.com
Yb3+ rare earth
hBN colour centre
GeV – Germanium vacancy
SnV – Tin vacancy
GaS/AlGaAs QDs, Rb cooling
Ca+ repump
Cs cooling
InAs/GaAs QDs, datacoms
Ba+ cooling
SM450
SM450
SM450
SM450
SM450
SM450
630HP
SM450
630HP
630HP
630HP
630HP
630HP
780HP
780HP
780HP
630HP
780HP
780HP
780HP
1060XP
1060XP
1060XP
SMF28
SMF28
SMF28
System
1060XP
1060XP
780HP
780HP
780HP
780HP
780HP
Read quotes below on the Silicon Nitride Process announcement.  
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The release of the SiNQ process and PDK by Wave Photonics is a groundbreaking moment for the quantum photonics community. By addressing the challenges of multi-wavelength integration with fabrication-aware design, Wave Photonics is transforming how quantum photonic integrated circuits are developed, enabling faster innovation with greater reliability. Siemens Cre8Ventures is proud to support such advancements, which align with our mission to foster collaboration and accelerate deep tech breakthroughs that push the boundaries of what’s possible in quantum and beyond.
Carson Bradbury
Co-Founder of Siemens Cre8Ventures
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Integrated photonics are one of the crucial enabling technologies towards building scalable trapped-ion quantum computers. Designing photonic components at the more unusual wavelengths needed for quantum computing remains a challenge, often needing experimental iterations to center the performance over process variation -- so the ability to provide "right-first-time" designs would be of great benefit both to Oxford Ionics and the wider photonic community. We were delighted to work with Wave and the broader consortium on this project, providing input and insights on specs as well as fabricating designs using our own Quantum Processor manufacturing process.
Chris Goodings
VP Engineering, Oxford Ionics
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The mission of the CORNERSTONE Photonics Innovation Centre is to build a pipeline of silicon photonics enabled companies in multiple industries. Two of the challenges to achieving this mission are lowering the barrier to entry for those new to the field and reducing the time to market for products. The release of Wave Photonics’ expansive PDK is a key step in overcoming these challenges.
Callum Littlejohns
CORNERSTONE Coordinator
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We see this innovative new process as a powerful industrial tool for ensuring yield and scale up of product designs for quantum applications.
Mark Goossens
Business Development Manager, CSA Catapult
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The diversity of wavelengths used in quantum technologies, spanning through the visible range and into the infra-red, has long presented a challenge for photonic integration.
With the release of the SiNQ process and PDK, we’re demonstrating the power and flexibility of the design technology we’ve been building and showing that photonics design across the visible range is now a solved problem. Making a quantum photonic integrated circuit is now like playing with Lego and can be done by simply putting pre-designed building blocks together.
James Lee
CEO, Wave Photonics
Case Study 2:
Silicon Nitride Process Optimisation​
Wave Photonics supported the CORNERSTONE foundry to re-optimise their PDK with new process conditions without compromising performance.

Researchers at the University of Southampton observed that higher UV exposure doses during the lithography step reduced waveguide loss - this was unpredicted behaviour.
However, it was observed that increased doses distorted component shapes, degrading overall PDK performance.
Wave Photonics re-optimised the PDK for the new process conditions, adapting to changes without compromising performance.

The Result: >25% improvement in loss performance across key components.