Tech Lead in the quantum computing team @IBMresearch. Views are my own.
Joined May 2008
- Tweets 703
- Following 93
- Followers 988
- Likes 2,598
11 Photos and videos
blake_johnson retweeted
21 Aug 2024
The team @qctrlHQ recently published exciting results on #quantum #optimization on a #qauntumcomputer - 120 qubit nontrivial Max-cut. It was amazing.
But why stop there? Here's 156 qubits, 100% AR (correct answer found) on @ibm Fez.
It just works.
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blake_johnson retweeted
8 Jul 2023
Earl I will make a few comments. The first is pushing average gate fidelity has not been the problem. In fact we regularly see above >99.9 in two qubit gate error. The hard part has been *stability* of two qubit gate error and cross-talk and both of these needed new technology.
8 Jul 2023
My two cents on the twitterati debate of whether qubit quality has not been increasing (fast enough?) because of the focus on qubit count.
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blake_johnson retweeted
14 Jun 2023
With a landmark paper published in @Nature, researchers from @IBM Quantum and @UCBerkeley are demonstrating the usefulness of the quantum computers we have today, opening the door to a new era in quantum computing—the era of quantum utility. ibm.co/3X5TAlc
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blake_johnson retweeted
14 Jun 2023
Published today in @Nature with our co-authors at @UCBerkeley, we have demonstrated for the first time that quantum computers with 100 qubits can produce accurate results - and reach beyond leading classical approaches. ibm.co/3JfBZ4m
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We’re excited to announce the release of Qiskit 0.43! Check out the details in the blog and thread below! 👇
qisk.it/42HaXKs 1/7
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For Qiskit Runtime users, primitives have become a core piece of the platform, but learning to use them can be a tad overwhelming.
On this week’s blog, Qiskit developer advocate Abby Mitchell and Luciano Bello break down primitives for you. qisk.it/3Nf1oxS 1/7
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20 Dec 2022
💯 decreases reliance on calculators to actually solve problems in your head.
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17 Nov 2022
The last couple years have convinced me that error mitigation is a lot more powerful than I previously thought. Last week, Sarah Sheldon and Youngseok Kim showed how error mitigation can enable dramatically larger circuits:
youtu.be/qsf_dZskFiI
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15 Nov 2022
A bit more on the dynamic circuits capability we just launched along with examples of already starting to exercise it.
youtu.be/03MczAYdUJU
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blake_johnson retweeted
10 Nov 2022
This might have gone under the radar a bit from yesterday but we’ve run a depth 36 circuit across an entire Eagle device by using error mitigation. This is why we are excited about the 100x100 challenge.
9 Nov 2022
Along our path towards the 100x100 challenge we announced today, we have just used error mitigation (ZNE) to demonstrate the largest circuit ever run on a quantum computer: a 127-qubit, 36-depth circuit, including 1,728 CNOT gates and mitigating on weight-1 observables.
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10 Nov 2022
We're also making it easier than ever to take advantage of advanced error suppression and mitigation techniques. Read more about 'resilience levels' and how people are integrating Qiskit Runtime primitives in their applications in this blog post:
research.ibm.com/blog/qiskit…
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10 Nov 2022
Super proud of my team for this achievement. Getting here took heroic effort, but they did it and they keep finding new ways to squeeze out even more performance.
9 Nov 2022
This year, we challenged ourselves to boost the speed of our devices from 1.0k to 10k circuit layer operations per second (CLOPS). By improving the Runtime Compiler, the Quantum Engine, and our Control Systems, we were able to do just that and more. We hit 15.7k CLOPS.
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9 Nov 2022
Dynamic circuits are live on IBM Quantum hardware! We hope to usher in a new phase of discovery of dynamic circuits by allowing exploration with real hardware.
research.ibm.com/blog/quantu…
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9 Nov 2022
Quantum Summit kicks off in just a few hours. We have some big announcements to share!
8 Nov 2022
IBM Quantum Summit 2022 kicks off tomorrow morning at 9:00am ET in New York City. Stay tuned for some major quantum announcements from our annual flagship event.
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2 Nov 2022
Evidentemente, si hagas un tweet en Español, tu feed estará lleno de anuncios en Español.
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blake_johnson retweeted
1 Nov 2022
Excited to share our new work:
arxiv.org/abs/2210.17548
We show (w/ experiments included!) that the AKLT state can be deterministically prepared with a constant-depth circuit mid-circuit measurements, a major speed-up over known methods that all require times that scale w size.
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18 Oct 2022
The next IBM Quantum challenge kicks off in a few weeks. This year's focus will be on using sampling and estimating primitives in algorithms. Check it out:
research.ibm.com/blog/quantu…
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blake_johnson retweeted
4 Oct 2022
Want to understand why the physics Nobel awarded today is such a big deal?
Alain Aspect, John F. Clauser and Anton Zeilinger were awarded the Nobel prize today for groundbreaking work in quantum technologies (1/?)
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4 Oct 2022
In celebration of Aspect, Clauser, and Zeilinger winning the #NobelPrize this year, you can experiment with the CHSH inequality (the C is for Clauser) on IBM quantum computers. See a tutorial here:
github.com/Qiskit/qiskit-ibm…
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4 Oct 2022
Note that while CHSH tests are signatures of quantum behavior, quantum processors are not suitable testbeds for tests of local realism and other foundational questions of interest to Aspect, Clauser, and Zeilinger. Loopholes abound!
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