Quantum Hardware, Quantum Computing News

Photonic Chip Packaging Hits dB/Facet Edge-Coupling Loss

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June 14, 2026 by Ivy Delaney

Xanadu Quantum Technologies has achieved an average loss in its photonic chips, establishing a new industry benchmark critical for building practical photonic quantum computers. This milestone results from the convergence of Xanadu’s advancements in chip design, fabrication, and packaging solutions, facilitated by its advanced photonic chip packaging facility launched last year. “Minimizing loss is paramount to unlocking the full potential of photonic quantum computing,” stated Dr. Christian Weedbrook, Founder and Chief Executive Officer of Xanadu. “This loss achievement is not just an incremental improvement; it represents a significant leap forward in our ability to deliver highly-efficient and scalable quantum hardware.” This achievement underscores Xanadu’s proactive hardware development approach and its commitment to advancing photonics and quantum technologies.

Advancements in Chip Design Enable Ultra-Low Edge-Coupling Loss

This level of performance, a key indicator of system feasibility, stems from advanced integrated photonic chip design, fabrication techniques, and packaging innovations within the company’s hardware development pipeline. Xanadu’s internal advanced photonic chip packaging facility, operational since last year, proved instrumental in this milestone, specifically designed to accelerate the creation of integrated photonic platforms and scale production capabilities. The company’s success wasn’t achieved in isolation; collaborative efforts with industry partners, including a joint development agreement to engineer customized fiber solutions, were crucial for enabling low-loss networking of quantum computing chips. According to Dr.

This loss achievement of dB/facet is not just an incremental improvement; it represents a significant leap forward in our ability to deliver highly-efficient and scalable quantum hardware.

Dr. Christian Weedbrook, Founder and Chief Executive Officer of Xanadu

With continued advancements, Xanadu aims to push the boundaries of photonics and quantum technologies, bringing practical photonic quantum computing closer to reality.

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Ivy Delaney

Ivy Delaney has been working with neural networks and machine learning since the mid-nineties, back when a couple of hidden layers and a long afternoon of training counted as ambitious. She has watched the field go from academic curiosity to the thing quietly running underneath everything, and she brings that long view to quantum computing. For Quantum Zeitgeist she covers the ground where the two fields meet. That means quantum machine learning and the variational algorithms it leans on, and it also means the less glamorous but more interesting story of classical machine learning already doing real work inside quantum machines, decoding error-correcting codes, calibrating noisy hardware and learning the error models that simulators depend on. She writes about the hardware those algorithms have to run on too, and about the post-quantum cryptography scramble that the same hardware has set off. Her stories typically start with the paper, whether that is peer-reviewed work, conference proceedings or an arXiv preprint, with the source linked so you can hold a claim up against the research it came from. She is unimpressed by benchmarks that will not say what they beat, and by demonstrations that only work in the press release.

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