New analysis milestone might clear up quantum scalability

Wherever you fall on the spectrum of quantum skeptics, you can’t deny that the technology’s potential is intriguing. Don’t worry, we’ll admit we don’t fully understand it yet, but the founders of QuiX Quantum do.

Together with scientists from Leibniz Universität Hannover, the team has demonstrated a fully integrated quantum light source on a chip that is smaller than the size of a one-euro coin.

For information only, the study titled “Fully on-chip photonic turnkey quantum source for Entangled Qubit/Qudit State Generation” was published in nature photonics this week. His findings could reportedly prove groundbreaking for technologies like quantum computing.

Photonics offer temperature advantages

Quantum photonics is a field of research that studies the behavior of light and its interactions with matter at the quantum level. Quantum light sources produce photons that can be used as quantum bits or qubits. One of the main advantages of photonics compared to superconducting approaches is that it is compatible with room temperature operating conditions.

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However, most sources are external laser systems, making them bulky and non-reproducible, making them unsuitable for use outside of the laboratory or for larger-scale production. Integrated or on-chip sources are becoming increasingly popular as they are more compact and stable.

A fully integrated light source, as demonstrated by QuiX and Leibniz University scientists, will allow all stages of quantum information processing (QIP) to reside on a single chip, leading to greater stability and scalability of the technology.

Plug and play photonics solutions

QuiX Quantum was founded in January 2019. Since then, the company has raised over 5.5 million euros in funding and is already the European market leader for quantum computing hardware based on photonics. They sold their first quantum processors in 2021 and are building 8- and 64-qubit universal quantum computers worth 14 million euros for the German Aerospace Center.

The company says its goal is “the continuous disruption of quantum computing with our high-technology, scalable, future-proof, integrated plug-and-play photonics solutions.” The latest breakthrough couldn’t have come at a better time. The EU has just started a 19 million euro project to help quantum startups transition from lab to market.

Earlier this year, QuiX Quantum took home the prestigious Prism Award for its 20-mode Quantum Photonic Processor. This award is known as the “Oscar of Photonics” and is presented during the Photonics West conference in San Francisco.

“In four years, we have evolved from an idea to provide award-winning, market-leading hardware for photonic quantum computing,” said Stefan Hengesbach, CEO of Quix. “This award-winning processor is at the core of our current-generation quantum computers, which have already made a tremendous impact on the quantum ecosystem as an excellent tool for performing fundamental quantum mechanical experiments on chip.

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