Horizon Quantum Computing

23/04/2026

“Hardware has been making tremendous progress in terms of getting towards useful quantum computers. But hardware is only part of the picture. Without software, computers don’t live up to their full potential,” our CEO Dr Joe Fitzsimons said at the Nasdaq opening bell ceremony on the first day of our listing. “Seven years ago, we set out on a mission to build a software infrastructure to enable developers to build software that runs on quantum computers, that harnesses quantum computers to deliver real value for their end users. We are delighted to be pushing forward on that journey. I’m really proud of the progress we’ve made, of pushing the frontiers both in terms of programming languages, and also now with the first steps towards a true quantum operating system.”

One month from our Nasdaq debut, the significance of this milestone is still unfolding. We marked this important moment at the Nasdaq tower together with our team members, investors, collaborators, family, and friends.

Becoming a public company is an important step in Horizon Quantum’s journey—and it is also the result of years of work from our team, partners, and supporters. We’re grateful to everyone who has helped bring us to this point.

As we move forward, our focus remains unchanged. We’re excited to advance our mission of unlocking broad quantum advantage by building the software infrastructure that empowers developers to use quantum computing to solve the world’s toughest computational problems.

Photo credit: 2026 Nasdaq, Inc. / Vanja Savic

09/04/2026

Today, we are excited to announce that we have entered into a strategic agreement with IonQ, marking a new step in our efforts to enable broad quantum advantage.

Horizon Quantum will purchase one of IonQ’s first 6th-generation, chip-based 256-qubit trapped-ion systems—an acquisition that will further our progress towards unlocking the full potential of quantum computing with our software platform.

With microwave gate operations and 99.99% gate fidelity, IonQ’s 256-qubit system is designed to provide researchers and developers significantly more computing capacity to explore complex problems, producing more accurate and reliable solutions using our software infrastructure.

The acquisition of this system enables us to expand the capabilities of our hardware testbed beyond Ember-1—our initial superconducting system—with a second, technologically distinct hardware modality, helping us make further progress towards our goal of building the most capable, hardware-agnostic environment for quantum software development.

“I could not be more delighted to be working with IonQ to bring trapped ion and world-leading gate fidelities to our testbed,” said our Founder and CEO Dr Joe Fitzsimons. “Bringing a state-of-the-art system with the capabilities of hundreds of qubits will provide an important and cutting-edge resource to bear in our quest to unlock broad quantum advantage for developers.”

Read more in the press release: https://www.horizonquantum.com/resources/newsroom/horizon-quantum-and-ionq-enter-into-strategic-agreement-to-unlock-quantum-potential

20/03/2026

Today, Horizon Quantum began its journey as a public company, trading on the Nasdaq under the ticker symbol “HQ.” This milestone was only possible thanks to the efforts of our stakeholders. We are deeply grateful to everyone who has contributed to this achievement.

To mark the occasion, this morning our Founder & CEO Dr Joe Fitzsimons and CSO Dr Si-Hui Tan rang the opening bell at the Nasdaq exchange.

You can watch the replay of the ceremony here: https://www.nasdaq.com/videos/horizon-quantum-rings-nasdaq-stock-market-opening-bell

As we enter this next phase, we remain committed to—and excited about—achieving our mission of unlocking broad quantum advantage by building the software infrastructure that empowers developers to use quantum computing to solve the world’s toughest computational problems.

19/03/2026

Today, we’re pleased to unveil Horizon Quantum’s new website. As we enter our next phase as a listed company, we felt the time was right to redefine how we present our mission, vision, and technology to the world.
www.horizonquantum.com

The new site offers a complete view of our work to build the software infrastructure that powers quantum applications. We invite you to explore the site and learn more about what we’re developing at Horizon.

03/12/2025

Today, we announce that we have completed the assembly and integration of a first quantum computer at our Singapore headquarters. The system is now fully operational. Assembled from components and operated directly by our team, this system makes us the first quantum software company to own and run a quantum computer.

https://youtu.be/kyioaNDohPc

Read more in the press release: https://www.horizonquantum.com/updates/news/horizon-quantum-becomes-first-quantum-software-company-to-own-and-operate-a-quantum-computer

Horizon Quantum’s hardware testbed features a fully operational quantum computer, making Horizon the first quantum software company to own and operate its ow...

01/09/2025

The latest Big Read piece from CNA explores how quantum computing is moving out of the lab and into industry. The technology is gaining traction in real sectors, from finance to defence, with Singapore positioning itself as a hub through coordinated public investment and private R&D.

"As we push the limits of what is possible within quantum programming, we are starting to see the elements of a first true quantum operating system, analogous to the Linux or Windows kernels, emerging from our work," our CEO, Dr Joe Fitzsimons, told CNA Today’s senior journalist, Loraine Lee, in an interview.

More about Singapore’s quantum landscape and how companies like Horizon Quantum are working to make quantum technologies useful and widely used:

It may take up to two decades before quantum computing's potential is realised, but countries and corporations are investing heavily in this potentially game-changing technology so that they can be ahead of the pack.

20/12/2024

Happy holidays from the Horizon Quantum team! May your quantum states be perfectly entangled with joy in this holiday season!

21/11/2024

“The real promise of quantum computing is that potentially it’s computing all over again. Around 2016, it was really clear to me that the pendulum of progress was swinging away from academia and towards industry. It was the right time to make the leap,” - our CEO Dr Joe Fitzsimons.

The Turning Point video series is an exploration of the powerful – and often behind-the-scenes – visionaries and global networks enabling future innovation.
Our team is elated to have been invited by Bloomberg and HSBC to tell our story. We remain committed to driving progress and shaping the future of the quantum computing industry.

In business, ambition knows no borders. Turning Point is an exploration of the powerful – and often behind-the-scenes – global networks enabling future innovation. From space exploration to quantum technology, discover the unexpected connections and unconventional paths of the visionaries buildi...

11/09/2024

Early computers were special-purpose machines created for specific tasks, unlike the versatile systems we have today. The quantum ecosystem is in a comparable phase right now, with experts focusing on developing standalone quantum algorithms rather than tools for broader applications.

At Horizon Quantum, we leverage lessons from the history of classical computing in order to develop a comprehensive software stack, aiming to unlock the potential of quantum computers as powerful general-purpose machines. This approach represents a paradigm shift that aims to empower developers to tackle previously insurmountable computational challenges.
Explore our vision and why we’re building a classical-to-quantum toolchain.

A universal software developer tool to program quantum applications

09/09/2024

Meet the Horizon Quantum of today. We’re thrilled to unveil our fresh branding, reflecting the evolution of our company.

Read on our website why we’re building a classical to quantum toolchain and explore the unique capabilities of Triple Alpha. Welcome aboard!

https://www.horizonquantum.com/