fastneutron

11 ms·

91.
by fastneutron 3y ago
Depends on the time of day. Sometimes quantum topics generate good discussion here, and other times it’s a peanut gallery of minimally-informed dismissals. I’ve had a heck of a time trying to find a decent online community to discuss this s
92.
by fastneutron 3y ago
In principle, the advantages of quantum computers are delivered not in speed or throughput, but in algorithmic scaling. For example, the well-known Grover's search algorithm scales as O(sqrt(N)), as opposed to O(n) for classical linear
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by fastneutron 3y ago
The migration to post-quantum cryptosystems is a different issue than standardizing one in the first place, and I'm not going to pretend to know anything about the organizational cat-herding needed to achieve such a migration. The US g
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by fastneutron 3y ago
In their present state, yes. These things are basically sophisticated physics experiments with a cloud API. This is fine for research, education and training, but currently insufficient for problems of economic value.
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by fastneutron 3y ago
A qubit is any addressable 2-level quantum system. Think spins, oscillation modes, energy levels, polarization, etc. All of these have been implemented and demonstrated to varying degrees, with superconductors and trapped ions (this article
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by fastneutron 3y ago
Anything involving simulation of quantum mechanical systems. Think materials, molecules, nuclei, general field theories, etc. The fixation on asymmetric encryption vulnerability is overblown at this point. The near-completion of the post-qu
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by fastneutron 3y ago
Un-burning all the fossil fuels we’ve burned obviously requires a level of industrial infrastructure on par with what it took to get to this point in the first place. The olivine method seems to be the most effective from the standpoint of
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by fastneutron 3y ago
Revenue-Motivated Quality Degradation (RMQD) doesn’t quite have the same ring to it.
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by fastneutron 3y ago
The NRC does not plan to regulate fusion power the same way it does fission power [1]. Rather, it’s handled under the same framework as particle accelerators, which in many cases, falls under the jurisdiction of state health and environment
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by fastneutron 3y ago
I haven’t noticed much degradation, and I ask it fairly technical questions related to code and physics topics. What I have noticed though is needing to qualify my statements more, to avoid having it go down the wrong chain of conversation
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by fastneutron 3y ago
Shewchuk’s Triangle code for Delaunay mesh generation is some of the most elegant C-code I’ve ever seen [1]. It even won the SIAM Wilkinson Prize for numerical software at the time it was written. It’s written in a literate style, and buil
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by fastneutron 3y ago
For a time, Argonne National Laboratory was raffling off lucite-encased blocks of CP-1 graphite at conferences. They probably have a stockroom somewhere of the stuff to give to VIPs, etc.
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by fastneutron 3y ago
All this, and the nuclear business is still using variants of LCGs from 60 years ago [1] for Monte Carlo simulations. In this case, their speed, repeatability and “good enough” statistical properties haven’t motivated much to change. 1. ht
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by fastneutron 3y ago
And this right here was one of the biggest problems. Unless you had read Snow Crash, most people would automatically assume that Metaverse was a Facebook product, and disengage for that reason alone. Actually, even those who had read Snow C
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by fastneutron 3y ago
It seemed like the only people who could remotely have been considered excited about the concept was a very particular slice of the tech media echo chamber. The Snow Crash Metaverse was kind of fun to think about. The Mark Zuckerberg Metave
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by fastneutron 3y ago
It was extremely stressful at the time, but we made the strategic decision to have kids young while we have the energy. I can’t imagine being 10 years older and being able to keep up with everything.
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by fastneutron 3y ago
I moved out of my parents’ at 18, finished undergrad and started my PhD at 21, married and had my first child towards the end of grad school at 26, and currently have 3 kids. Total household income is about $325k in a MCOL area. We became h
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by fastneutron 3y ago
Submission statement: Quantum computing is in the unique position of having received a large amount of private investment relative to its technological maturity. This editorial poses the question of whether government funding will pick up t
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The Quantum State of Affairs(nature.com)
2 points by fastneutron 3y ago|1 comments
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by fastneutron 3y ago
At the high end, the standard workhorse for really serious hobbyists and rock hunters is the Ludlum Model 3 with a 44-9 pancake probe [1,2]. Throw in a scintillation probe [3] if you really want to find needles in haystacks. There are peren
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by fastneutron 3y ago
This is similar to a fun trick I used to show people back when CRTs were the predominant television screen. The face of the TV would build up a static charge and collect dust over time. I’d wipe the screen off with a damp paper towel and pl
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by fastneutron 3y ago
Not as rigorous at Nielsen and Chuang, but “Quantum Chemistry and Quantum Computing for the Curious” [1] is alright for hands on tinkering. Beyond that, things are still pretty much in the realm of academic literature. 1. https:/&#x2F
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by fastneutron 3y ago
The fact that a coordinator like a publisher exists isn’t necessarily in dispute. Sometimes it’s necessary to have a 3rd party coordinate reviewers, maintain quality standards, and settle plagiarism disputes. The issue is the price. It’s wh
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by fastneutron 3y ago
The closest analogy I can think of is a highway billboard. Say there’s a really good spot with lots of traffic, and you want drivers to see your ad. The billboard company provides a venue for you to put up the ad, and takes care of the prin
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by fastneutron 4y ago
It’s certainly true that much of this stuff has been around a while to those familiar, and I didn’t attempt to frame this article as anything beyond a survey in my original statement. The title is what it is. I’m most interested in hearing
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by fastneutron 4y ago
I don’t get, nor appreciate the low-effort dismissal. In the world of traditional science and engineering that I come from, these kinds of methods are relatively unknown, let alone used to any real benefit. A document like this aggregates a
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by fastneutron 4y ago
The lead author is from a nonprofit called the Institute for Simulation Intelligence: https://simulation.science/ It must be fairly new, since their website is a skeleton compared to this article. I wonder what publication
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by fastneutron 4y ago
Another document with the same flavor is “Larry’s Speakeasy: A Handbook for Spoken Mathematics.” Basically a notation-to-English translation guide. It’s actually listed as a technical report from Lawrence Livermore National Lab, but the onl
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by fastneutron 4y ago
From a pragmatic perspective, being able to use AI to accelerate or otherwise enhance computations for science and engineering has a pretty big value proposition. Being able to turn around high fidelity calculations in a fraction of the tim
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by fastneutron 4y ago
Submission statement: I came across this article earlier today and it hit home on a lot of things that have been swirling in my head lately on the current direction of scientific computing methods. I work in R&D in this space, and would

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