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Alex Rubin

@alexhrubin

PhD candidate studying quantum nanophotonics at UC Davis. Previously: PsiQuantum, Amazon CQC

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30.12.2023
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Latest posts by Alex Rubin @alexhrubin

Saloni, the chunnel is dug 45 meters under the seabed. If it was transparent you’d only see rocks!

01.03.2026 16:32 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

See also: miles/km conversion and the golden ratio

10.01.2026 17:23 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Friction is good and one of the most consequential tasks facing the designers and managers of social-technical systems in the 21st century is putting it back in in the right ways and right places.

24.12.2025 00:24 πŸ‘ 444 πŸ” 72 πŸ’¬ 5 πŸ“Œ 3

This is bad but I have to admit the repetition of β€œformal analysis” made me laugh out loud

07.11.2025 21:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

anyway, plus Γ§a change

16.07.2025 05:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think if Lewis Mumford could’ve seen skibidi toilet he would kill himself

16.07.2025 05:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

β€œWith the successive demands of the outside world so frequent and so imperative, without any respect to their real importance, the inner world becomes progressively meager and formless: instead of active selection there is passive absorption…”

16.07.2025 05:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

In 1934 already worried about brain rot! Lewis Mumford: β€œβ€¦the radio, the telephone, the daily newspaper clamor for attention, and amid the host of stimuli to which people are subjected, it becomes more and more difficult to absorb and cope with any one part of the environment…”

16.07.2025 05:55 πŸ‘ 0 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

Funny, I just started reading the Feynman lectures on computation last week and happened to notice your name in the acknowledgments!

24.06.2025 01:38 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I’m at APS March Meeting today until Friday if anyone wants to meet up! βš›οΈ Come see my talk on Friday at 9:12am room 163! I’ll be presenting our recent work on SiC NV centers in nanopillars.

19.03.2025 18:30 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Stochastic jump-rope?
Coherence time trials?

18.03.2025 18:46 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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🚨 #Rlab preprint alert

πŸ₯πŸ₯πŸ₯ We have observed photon blockade in a cavity with multiple emitters i.e. a Tavis-Cummings system!

Collaboration with Berkeley Lab Advanced Quantum Testbed and MIT Lincoln Labs on analog quantum simulation to probe cavity QED in microwave domain.

arxiv.org/abs/2501.18751

03.02.2025 16:11 πŸ‘ 6 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Just finished Cadillac Desert and now I’m mad this essay doesn’t actually exist thanks

03.02.2025 04:59 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Aidan N. Sims, Dhrumil Patel, Aby Philip, Alex H. Rubin, Rahul Bandyopadhyay, Marina Radulaski, Mark M. Wilde
Digital Quantum Simulations of the Non-Resonant Open Tavis-Cummings Model
https://arxiv.org/abs/2501.18522

31.01.2025 05:56 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

It was so great to work with Mark and his group on this!

31.01.2025 03:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I guess my car has a thermal efficiency of about 10^28 bits per gallon

30.01.2025 19:55 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Passed my qualifying exam! That’s phd CANDIDATE to you!

27.01.2025 21:33 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That’s only von Neumann entropy though! Framing it this way sort of begs the question, doesn’t it?

18.12.2024 20:37 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Good government is easier when the pressure is low. Yet another reason to take action early.

17.12.2024 20:43 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Latest addition to the Robert Caro shrine has arrived

16.12.2024 20:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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A little holiday cheer from the lab πŸŽ„

08.12.2024 20:27 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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08.12.2024 03:11 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

The Lyndon Johnson series by Caro!

27.11.2024 21:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Wow I’ve never heard of that before! Sounds like he was halfway to rediscovering the Lindblad equation πŸ™‚

25.11.2024 22:31 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I picked this model because I’m interested in optimal control of the shape of the water surface at a specific time, similar to GRAPE in quantum optimal control

25.11.2024 22:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I think you’re basically right and wind is a major source of those ripples as well. My model doesn’t include any atmosphere though so I can’t easily simulate that

25.11.2024 22:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
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and also in 2D

25.11.2024 20:55 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Add me too, please!

25.11.2024 20:26 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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from a side project I'm working on: the shallow water equations are a system of hyperbolic PDEs that describe the movement of water when the depth is much less than the horizontal dimension. you can solve them pretty easily in julia. here's a 1D tub of water being shaken sinusoidally.

22.11.2024 17:38 πŸ‘ 7 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0