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Joe Fitzsimons

@jfitzsimons.bsky.social
852 followers 143 following 38 posts

Physicist turned startup founder. CEO @ Horizon Quantum Computing.

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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 · 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 · 03/12/2025
Now I have a quantum computer. Ho ho ho.
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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 · 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 · 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
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 · 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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