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Barkay Guttel

@bguttel

Experimentalist. Quantum computing with superconducting circuits for the win!

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18.11.2024
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Latest posts by Barkay Guttel @bguttel

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And the traditional meme:

@dulwichquantum.bsky.social

06.02.2026 13:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1

The textbook story of measurement as instantaneous collapse hides a rich dynamical landscape. Now we've mapped it.
arxiv.org/abs/2602.02672

@fabienlafont.bsky.social

06.02.2026 13:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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What theory didn't predict: decoherence rearranges the whole picture. The first two transitions swap order. The real phase diagram is fundamentally restructured, not just smeared.

06.02.2026 13:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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First: oscillations suddenly die at an exceptional point- quantum jumps are born. Second: the qubit gets stuck near one state, dwell time diverges. Third: the Zeno regime- more measurement, less dynamics.

06.02.2026 13:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Theory (Snizhko et al., 2020) predicted the crossover from quantum to classical-looking dynamics wouldn't be smooth. Instead: three sharp dynamical transitions. We've now seen all three for the first time in a superconducting qubit.

06.02.2026 13:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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What happens when you open Schrâdinger's box not all at once, but gradually? We answered this experimentally- and the answer isn't what anyone expected. 🧡

06.02.2026 13:31 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Not sure what it is, but pretty sure it's not quantum.
@quantuminthings.bsky.social

21.12.2025 00:07 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

In our lab everybody has converged toward Sony.
Each person bought at a different time so the models are different, but generally speaking everybody is happy and is able to work with the fridge noise in the background...

21.09.2025 21:14 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It's only entanglement if it comes from the entangle region in France.
Otherwise it's just bubbling correlation.

15.07.2025 15:54 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Patrick Star asking "Is mayonnaise the quantum Zeno effect?"

Patrick Star asking "Is mayonnaise the quantum Zeno effect?"

Our latest preprint is a review explaining all about quantum Zeno physics.

Again following @dulwichquantum.bsky.social 's rule, here's the meme summary (the answer is yes)
arxiv.org/abs/2506.12679

17.06.2025 13:05 πŸ‘ 5 πŸ” 1 πŸ’¬ 0 πŸ“Œ 1

I have a theory that Andreas just adds slides to the same presentation throughout his career and only hides different ones for different occasions.

03.04.2025 19:18 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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When you mess up the units.

30.03.2025 02:58 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Totally agree.
In the research they summarize (I didn't read the full version) the examiners got the CV where *all authors* are named.
If they were from the field and facing the first author's name more frequently it would have made a difference for sure.

25.03.2025 22:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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@quantuminthings.bsky.social

23.03.2025 03:42 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Preview
Superconducting Cavity-Qubit Architectures I 11:30 am – 2:06 pm, Monday March 17, Session MAR-B17, Anaheim Convention Center, 161 (Level 1)

Come to my talk at the APS meeting!

Danielle and I are presenting in a two-part talk our experimental results showing the transition into the quantum jump regime, and the onset of the quantum Zeno effect.
It's going to be great! :)

Monday, session B17, room 161.
summit.aps.org/events/MAR-B...

16.03.2025 18:48 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Maybe someone from Amazon about their architecture?

14.03.2025 20:28 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

We started with b, the CNC workshop here, but now we mostly order from Xometry and do small stuff/fixes at the "traditional" workshop here.

10.03.2025 05:53 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0