Engineers predict the behaviour of things on a regular basis. “Will this bridge hold under load? Will it hold in high winds? Are there any unexpected structural harmonics that might lead to undesirable instability?” are examples of the kind of prediction-seeking questions that engineers ask on a regular basis.

One of the methods that engineers use to answer these questions is a very helpful tool called computational fluid dynamics (CFD for short), a technique for determining the behaviours and dynamics of fluids. …


With Florent Michel and Edward Cottle

Fourier-optical computing technology of the kind developed by Optalysys has the capacity to deliver tremendous improvements in the computational speed and power consumption needed for artificial intelligence algorithms, but that’s not the only field to which the technology can be applied. The Fourier transform is incredibly versatile, and there are many seemingly unrelated problems which can benefit from a faster method of performing it.

One of these fields is a category of new methods for performing encryption, the process by which information is mathematically scrambled for security purposes. It’s expected that quantum computing will…


With Florent Michel

In our previous article on cryptography, we took a look at the concepts behind one of the most popular public-key cryptography schemes, and explained why we need an alternative because of the threat of quantum computing.

The security of one of the most popular public-key encryption schemes, RSA, is based on the difficulty of factoring large primes, a task which is anticipated to be much easier for quantum computers. …


These days, if you do any reading on the subject of information security, you don’t need to look very far to find a discussion of the problem of post-quantum security. It’s a well-known issue with the infrastructure of the modern internet; the cryptographic tools that keep information in transit secure from prying eyes and malicious activity are imminently at risk from an entirely new method of computing. The culprit, quantum computing, enables the use of new calculation techniques that can easily solve some of the fundamentally difficult mathematical problems on which these cryptographic tools are based.

There have been two…

Joseph Wilson

Applications engineer for Optalysys Ltd, working on novel use-cases for next-generation computing hardware based on silicon photonics and Fourier optics.

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