Category Archives: Quantum Information Processing

Quantum Software Stack

Quantum Software Stack – a brief overview

Since the birth of modern computing, progress has been supported by the evolution of an evermore sophisticated layered approach to software. A wide variety of majors and startups are vying to secure their place in the quantum software sector. To understand their plans we have to ask both what is similar and what is different…

Quantum Software Outlook 2021

Quantum Software Outlook 2021

IBM continues to dominate the quantum cloud. However access to new more powerful processors will increase competition in the early adopter market. Ideas for user-engagement and education continue to explode with innovation. In the long term, supporting developers is a challenge the conventional software industry understands, but don’t forget that underneath the hood the quantum…

Quantum Algorithms Outlook 2021

Quantum Algorithms Outlook 2021

Despite strong progress, demonstrating actual quantum advantage with early devices is still an elusive challenge. Expert opinion differs markedly on where and when initial value will come. Future large scale machines look great, but the overheads look daunting. With current error correction methods even a one million physical qubit machine may only be a modest…

Quantum software – beneath the quantum hype

Commercial activity around quantum computing has risen to fever pitch over the last year. Many point to the traditional cycle of hype and consolidation in tech markets. Some have become quick to call ‘bullshit’ much of the activity at the current commercial frontier. Others predict a coming quantum winter. How can investors and early adopters…

Quantum Algorithms Outlook

Quantum Algorithms Outlook 2020

Contrary to many reports there are set to be immediate applications even for early devices. Some will be controversial. However in other areas timelines look over-hyped. 2020 will be a key year to prove the naysayers wrong. Will clients see early value? Despite all the fuss, quantum processors actually run more slowly than conventional processors.…

Quantum Software Outlook

Quantum Software Outlook 2020

In 2020 everyone will want to persuade you to join their quantum software camp. Not everyone will come away happy. Huddling round the community fire may be a good way to keep the chills of quantum winter at bay. Making camp Everyone knows how lucrative controlling the software playing field became in the original Digital…

Quantum supremacy

Quantum supremacy – a new era?

Google claims quantum supremacy – the ability to perform a calculation beyond the reach of conventional computers. This is a landmark scientific, mathematical and technical achievement. But as many such as IBM point out we should all beware of hype. The road to general purpose quantum computing remains a long one. Google has published a…

Quantum Error Correction - from geek to superhero

Quantum error correction – from geek to superhero

Quantum computers can only realise their full potential by defeating the noise that plagues their delicate qubits. The field of quantum error correction offers some increasingly mature solutions. But it is also still a rapidly evolving discipline, and innovation here, as much as in hardware, will shape the future quantum computing roadmap. If 50-70 qubits are…

Introduction to Fault Tolerant Quantum Computation

Introduction to fault tolerant quantum computation

Right from the conception of quantum computers it was realised that controlling the build-up of errors in quantum computations is a key problem. Theoretical progress over the last 25 years has led to the development of techniques ready to meet this challenge. This introduction is for readers interested in the terminology of quantum error correcting…

Quantum Software - over-hyped but underestimated

Quantum software – over-hyped but underestimated

The advantages a quantum computer can offer depend on the quantum algorithms it can run and also how easily we can get data in and out of the system. Today’s hardware is still well short of the universal quantum dream and, in truth, the most often discussed benefits are still many years away. However the…