iiinova — where your digital self keeps evolving

Joe Fitzsimons @jfitzsimons.bsky.social · 09/04/2026

Looking forward to seeing the system come together and to integrating it with Triple Alpha.

Joe Fitzsimons @jfitzsimons.bsky.social · 09/04/2026

We're pushing forward with our effort to unlock broad quantum advantage by adding a frontier system to our testbed: IonQ's next-gen 256 qubit system, which is expected to have more nines of fidelity than you can shake a stick at.

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Joe Fitzsimons @jfitzsimons.bsky.social · 19/03/2026

Delighted to share that we expect to start trading on Nasdaq tomorrow. Well done to the team for getting us to this point.

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Reposted by Joe Fitzsimons

Horizon Quantum @horizonquantum.bsky.social · 19/01/2026

Today, we are excited to announce a strategic collaboration with Alice & Bob to leverage both our companies’ strengths and streamline the development and deployment of fault-tolerant quantum computing software. www.horizonquantum.com/updates/news...

horizonquantum.com

Horizon Quantum Explores Faster Ways to Fault-Tolerant Quantum Computing with Alice & Bob

Horizon Quantum and Alice & Bob announced a strategic collaboration to leverage both companies’ strengths and streamline the development and deployment of fault-tolerant quantum computing software.

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Joe Fitzsimons @jfitzsimons.bsky.social · 15/12/2025

We can set up a call early in the new year if you are interested to see it. Our tools aren’t open source.

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Joe Fitzsimons @jfitzsimons.bsky.social · 09/12/2025

We’ll be showing a preview of Beryllium at Q2B. Beryllium is an object-oriented language that allows developers to build ever higher levels of abstraction. If you are at Q2B, you can visit the stand for a demo of Beryllium and more.

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Joe Fitzsimons @jfitzsimons.bsky.social · 08/12/2025

Delighted to see this paper finally out. I had the initial discussion with @aspuru.bsky.social that set us on this path well over a decade ago. Well done to my co-authors who did all the real work.

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Joe Fitzsimons @jfitzsimons.bsky.social · 04/12/2025

But it is -very- black, and I’ve been explaining the difficulty of photonic quantum computing lately by pointing out it’s the same thing that makes lightsabers hard to build.

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Joe Fitzsimons @jfitzsimons.bsky.social · 04/12/2025

Weird, I was only going for a Die Hard reference in my post.

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Joe Fitzsimons @jfitzsimons.bsky.social · 03/12/2025

Now I have a quantum computer. Ho ho ho.

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Joe Fitzsimons @jfitzsimons.bsky.social · 07/10/2025

They do focus on quantum computing under "Later developments" here: www.nobelprize.org/uploads/2025...

nobelprize.org

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Joe Fitzsimons @jfitzsimons.bsky.social · 18/03/2025

If you're at #APSSummit25 and interested in what we're doing, drop by the stand to say hi to the team. Unfortunately, I can't make it myself, but you're in good hands with Philip, Angelina, Jessica, Pooja and Denis.

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Joe Fitzsimons @jfitzsimons.bsky.social · 17/02/2025

You know you’re getting old when artefacts from your youth start showing up in museums.

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Reposted by Joe Fitzsimons

Horizon Quantum @horizonquantum.bsky.social · 12/02/2025

At #Q2B Silicon Valley 2024, our CEO @jfitzsimons.bsky.social unveiled new capabilities that are now integrated into Triple Alpha, concluding the initial steps we are taking towards building a quantum operating system. www.youtube.com/watch?v=rl3T...

youtube.com

Q2B24 Silicon Valley | Dr. Joe Fitzsimons, CEO, Horizon Quantum

YouTube video by QC Ware

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Joe Fitzsimons @jfitzsimons.bsky.social · 19/01/2025

I'm in Palo Alto for a few weeks. Anyone around?

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Joe Fitzsimons @jfitzsimons.bsky.social · 31/12/2024

Since there is less than an hour left in 2024 here, I guess I need to make a new year prediction for quantum computing for the coming year. Here it is: now we're past the error correction threshold, we're going to find that qubit lifetimes will increase super exponentially with time.

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Joe Fitzsimons @jfitzsimons.bsky.social · 18/12/2024

Spotted at a cablecar station in Tromso, in the very north of Norway. The hazards seem to be slip, trip, fall from a height and James Bond.

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Joe Fitzsimons @jfitzsimons.bsky.social · 10/12/2024

Another year, another Q2B, another reason to visit @computerhistory.bsky.social. Who’s going to be first to get a dilution refrigerator on display there?

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Reposted by Joe Fitzsimons

Aziza Suleymanzade @azizasuleymanzade.bsky.social · 09/12/2024

Our paper on distributed blind computing is out on Arxiv! In short: we performed gates on our spin qubits remotely using photons without our nodes knowing what we did - all thanks to distributed matter-light entanglement 🥳

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Joe Fitzsimons @jfitzsimons.bsky.social · 07/12/2024

Congratulations! And don’t worry too much about the numbers. Some papers peak early, others pick up momentum over time. The main thing is to be ambitious in the problems you tackle and tenacious enough to see them through. Those papers do better over time than jumping on the hot topic of the day.

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Joe Fitzsimons @jfitzsimons.bsky.social · 01/12/2024

Basically, once you start to create correlations between regions, the individual regions are necessarily in a mixed state.

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Joe Fitzsimons @jfitzsimons.bsky.social · 01/12/2024

@csferrie.bsky.social's answer is correct. More generally, the observable universe can become mixed. Even if the universe starts is a pure, separable state, the observable universe rapidly becomes mixed, due to photons carrying information away from a given region at the speed of light.

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Joe Fitzsimons @jfitzsimons.bsky.social · 28/11/2024

I’ve convinced our marcomms team that quantum twitter has been moving over here.

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Joe Fitzsimons @jfitzsimons.bsky.social · 22/11/2024

It took me longer than I am prepared to admit to come up with this dumb joke.

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Joe Fitzsimons @jfitzsimons.bsky.social · 22/11/2024

Cold weather is clearly a big advantage for doing low temperature physics. This is known as the Leiden frost effect.

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Joe Fitzsimons @jfitzsimons.bsky.social · 22/11/2024

I was more hinting at the fact that it’s very warm there.

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Joe Fitzsimons @jfitzsimons.bsky.social · 21/11/2024

I had the chance to visit Bluefors today in Helsinki. CQT may have made Singapore the coolest place on the equator, but I can’t help thinking that there is a reason Singapore didn’t spawn the world’s leading manufacturer of dilution refrigerators.

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Joe Fitzsimons @jfitzsimons.bsky.social · 21/11/2024

Delighted to share a short video on our journey at Horizon Quantum from Bloomberg and HSBC. youtu.be/qBiDyd4wRyc?...

youtu.be

Turning Point: The Quantum Opportunity | Presented by HSBC

YouTube video by Bloomberg Media Studios

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Joe Fitzsimons @jfitzsimons.bsky.social · 26/10/2023

The secret but desirable sort, I think.

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Joe Fitzsimons @jfitzsimons.bsky.social · 26/10/2023

Oh, they don’t need to be online. I’m quite far out of touch with the current crop of students so good to know who’s doing interesting things, but more immediately I’m also organising an event.

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Joe Fitzsimons @jfitzsimons.bsky.social · 26/10/2023

Question for quantum bluesky: Which PhD students are doing the most interesting QC work at the moment? All the people I thought were PhD students now have tenure.

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Joe Fitzsimons @jfitzsimons.bsky.social · 09/08/2023

If you’re a quantum physicist, you should watch Oppenheimer. I have no time for the Oppenheimer-envy that so many in AI seem to be experiencing. The parable of Oppenheimer for physicists is about the weight of the work of those that went before. It’s our Iron Ring.

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Joe Fitzsimons @jfitzsimons.bsky.social · 08/07/2023

There was a good community (if short lived) on clubhouse, which just came about by sharing our invites within the community. Maybe the same can be done here (though hopefully the platform will be longer lived).

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Joe Fitzsimons @jfitzsimons.bsky.social · 08/07/2023

That’s not what I meant. Twitter had previously had a very active community of people working on quantum physics and quantum computations across academia, government labs and industry. I’d like to see it come back to life somewhere.

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Joe Fitzsimons @jfitzsimons.bsky.social · 08/07/2023

Oh, I didn’t mean it as criticism. I just wanted to add for any impressionable youngsters reading and thinking of getting into QC that it’s possible to choose a path where you work on it full time. I’ve worked almost exclusively on QC for nearly 20 years now.

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Joe Fitzsimons @jfitzsimons.bsky.social · 08/07/2023

I think this depends a bit on the area you focus on. It’s clear that we have not yet reached useful quantum computing for end users, so if that’s your focus you’ll likely find there isn’t much you can do right now. However, there is a mountain of work to be done on developing the core technology.

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Joe Fitzsimons @jfitzsimons.bsky.social · 07/07/2023

Ok, since the quantum computing crowd mostly haven’t arrived yet, maybe it’s a sign I should shake up who I follow. Who’s worth following on here? Science, tech, startups or just generally interesting or amusing.

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Joe Fitzsimons @jfitzsimons.bsky.social · 04/07/2023

So, what are the chances of getting a good quantum community here?

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Joe Fitzsimons @jfitzsimons.bsky.social · 04/07/2023

4th of July seems like an auspicious date to join Bluesky.

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