Brad Mitchell

He/Him. Research Scientist in quantum computing at IBM. Formerly UC Berkeley, ETH Zürich, and CU Boulder. Opinions are my own.

[Jay Gambetta @jaygambetta]

I’m happy to say that our team at IBM Quantum and research collaborators at UC Berkeley have demonstrated evidence of quantum computers’ utility in experiments evaluating quantum and classical methods for a series of increasingly challenging simulation problems.

[Brad Mitchell @mbrad92]

Was great to see everyone and share my experience transitioning from grad school to industry in #QuantumComputing! Thanks AQT @LBNLcs @BerkeleyPhysics for the great preparation for the quantum workforce, hope to pay it back and forward!

[Berkeley Lab Computing Sciences Area @LBNLcs]

Hello Advanced Quantum Testbed @BerkeleyLab alumni !🎓Happy to tune in to presentations from👋⚛️ Marie Lu, now at @PsiQuantum, @mbrad92 at @IBM, @AlexisMorvan1 at @GoogleQuantumAI. ▶️https://t.co/VoqY15O5FU

#AQTatBerkeleyLab
#QuantumComputing

[Ken Wei @phase_sm1th]

excited to share our work on how to detect coherent nonmarkovian errors in transmon quantum processors. by mitigating off-resonant errors we demonstrate a cross-resonance gate with 0.12% epg. many thanks to @EmilyPritchet18, david, @qubitsRcool, and seth. https://t.co/u0LNSPkNsl

[Brad Mitchell @mbrad92]

Alexei was a kind, thoughtful, and fun person. I have many fond memories chatting with him around Berkeley. My deepest condolences, @amarchenkova, his presence in the quantum community will be deeply missed.

[Brad Mitchell @mbrad92]

Great work by @NoahGossQuantum and the team!

[Noah Goss @NoahGossQuantum]

I’m excited to share that our work demonstrating high-fidelity entangling gates for superconducting qutrits (https://t.co/y8VZBt0PH0) was recently published in @NatureComms and has been chosen as an editor’s highlight (https://t.co/Itvywnbipa). Here’s a quick thread 🧵about it!

[Sarah Wandelt @sarah_wandelt]

Super excited to share a preprint! At @Caltech, we build the first closed-loop brain-machine (#BMI) interface that is able to decode internal speech 💭. Check it out here: https://t.co/8bNDtGA6w2

[Olivia Lanes @Liv_Lanes]

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/?)

[Jay Gambetta @jaygambetta]

After three years of hard work the Super Fridge works. https://t.co/JG4zHNrDcK
(1/6)

[Brad Mitchell @mbrad92]

@vvelan Congrats!! 🍾

[Physical Review X @PhysRevX]

A new method for weakly monitoring a quantum state uses a neural network to learn and adapt to detector effects that typically prevent measurements of rapidly changing states. Read https://t.co/D14qgKyCPN #PRXqst @GerwinKoolstra @stevenson_noah_ @justdressel @rnaik24quantum

[Ben Chapman @Ben__Chapman]

What sets the T1 times of the best transmons on sapphire? Bulk dielectric loss in the substrate is likely one of the largest remaining losses: https://t.co/xy4tXIjno7

[Berkeley Lab Computing Sciences Area @LBNLcs]

Preprint alert 🚨 Researchers at the Advanced Quantum Testbed (AQT) @BerkeleyLab in collab w/ @KeysightQ report results of engineering high-fidelity qutrit entangling gates for ⚛️ superconducting hardware. cc. @NoahGossQuantum et al. https://t.co/4npBjziAOo

#AQTatBerkeleyLab

[Berkeley Lab Computing Sciences Area @LBNLcs]

Researchers at the Advanced Quantum Testbed @BerkeleyLab demonstrated 🔥a 3-qubit native logic gate:

✅Novel
✅Easy-to-implement
✅ High-fidelity (98.26%)

@NaturePhysics published experiment. Funded by @doescience. ➡️https://t.co/EMLUJxYqUq

#AQTatBerkeleyLab
#QuantumComputing

[Brad Mitchell @mbrad92]

@MachielSBlok @OdedRechavi 🤣

[Berkeley Lab Computing Sciences Area @LBNLcs]

Experimental breakthrough at the Advanced Quantum Testbed @BerkeleyLab. 👇

#AQTatBerkeleyLab

[Nature Physics @NaturePhysics]

High-fidelity three-qubit iToffoli gate for fixed-frequency superconducting qubits

https://t.co/s9HwcaFRgJ

[Machiel Blok @MachielSBlok]

Direct parity measurements can be used to continuously correct quantum errors. We demonstrated this in a circuit QED architecture and implemented a three-qubit continuous bit-flip protocol. Work from #qnl at UC Berkeley.
https://t.co/kCaBZeldY1

[Brad Mitchell @mbrad92]

@vvelan Loved living in Temescal!

[Error correction zoo @theeczoo]

@v_sivak of @Yale_QI presents beyond break-even error correction with GKP codes at #apsmarch. This means that quantum error correction has definitively done its job: the logical error rate is 1.4 times *longer* than the bare physical error rate. A first AFAWK for a quantum code!

[Brad Mitchell @mbrad92]

@vvelan @BerkeleyLab Congrats Vetri!!