_8091149529

4 ms·

1.
by _8091149529 3y ago
Reading the competition rules, the prize will be awarded for algorithms that do the most societal good with the smallest estimated size of quantum computer - There is no requirement to actually execute the proposed computation. Also they gi
2.
by _8091149529 4y ago
I agree with parent (despite the downvotes), there's an ontological mismatch in the title. Mathematical constructs by themselves cannot reveal truths about the physical world. Instead: Mathematical model confirmed by experiment. Or: O
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by _8091149529 4y ago
No quantum computing platform today has meaningful error correction. What you can get, in some cases, is limited error detection based on the outcome of the question computation, if it's built into your specific algorithm.
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by _8091149529 4y ago
What would be the example of an outstanding, reasonably-sized (even quantum computers of the future have finite resources) quantum simulation problem that is intractable today but would unlock some economic potential, if solved?
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by _8091149529 5y ago
You can create a free account at IBM Quantum and peek at the latest calibration data there. Edit: Only a fraction of the qubits of the 127 qubit system were calibrated when I looked.
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by _8091149529 5y ago
There's a commercial product for classical simulation of small QPUs [0]. With dedicated hardware handles up to 41 qubits. I'm not affiliated with the company or endorsing their products, just pointing out that they exist. [0] htt
7.
by _8091149529 6y ago
For anyone struggling to make sense of this: I have a physics PhD, I have spent most of my career in fundamental research, I have read the Wikipedia article and other references multiple times, and attended several talks, and I still don&#x
8.
by _8091149529 6y ago
This is quite a convoluted way of making an electrical switch. In brief, the carriers of supercurrent (Cooper pairs) in the channel are "depleted" (actually: broken up) by a local heater that raises the channel temperature above t
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by _8091149529 6y ago
I appreciate your views otherwise, but I did not use or imply "fraud" in my comment(s).
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by _8091149529 6y ago
Not the person you're replying to, but I admit to characterizing your paper as "garbage" in another comment thread. Since you're inviting discourse, which I greatly appreciate, I'm compelled to reply. 1) To anyone w
11.
by _8091149529 6y ago
Just posting to lament the fact that there are two blatantly garbage-tier research articles on the front page at the moment (this and the Ramanujan machine).
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by _8091149529 6y ago
> How is this achieved in practice? Wish I knew. I think my take-home from this discussion is that the honor code can be made to work in the right circumstances that exist, at least, at Caltech, Rice, etc. At the same time, I believe it
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by _8091149529 6y ago
I was aware of the implications, hence the disclaimer "(Bad if ...)" However, I'd assume that doing either during a test would be against the honor code.
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by _8091149529 6y ago
My counterarguments, in good faith: Clearly, any society collectively benefits from honesty, whereas an honest act is, at least in a strict game-theoretic view, a loss to the individual in the short term. The question "Are you honest?&
15.
by _8091149529 6y ago
Interesting, thanks for the replies. I'd still point out that the system is not robust against: - Working in groups. (Bad if tests are supposed to assess individual performance.) - Asking outsiders for help. Also, your downplaying
16.
by _8091149529 6y ago
I spent a few years at Caltech in an academic role (not as a student). I never understood the rationale behind the unsupervised take-home exams. Could you elaborate what is it that makes it a 'success', in your opinion? The shortc
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by _8091149529 6y ago
I think your question is excellently phrased. The answer for anything data science-y is "no." The bottleneck will be transferring the input data onto the quantum CPU. For algorithms like HHL that have superclassical performance, a
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by _8091149529 6y ago
What seems to be missing from the replies posted so far is the notion of coherence, and the choice of measurement basis. What separates a coherent "quantum" superposition, say, |0> + |1>, from a probabilistic "non-quant
19.
by _8091149529 6y ago
This! I used to be puzzled by how anyone could ever drive off with the nozzle still in the car. I had only seen the non-latching dispenser, and service stations don't exist in my country. I was probably (shamefully) thinking something
20.
by _8091149529 6y ago
Agree with sentiments of the parent comment. I believe the prestige and social standing of physics (and, in part, the academia as a whole) is founded in the truly transformational technological advances -- say, the transistor -- made in th
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Ask HN: New career for a faltering academic? (Experimental physics post-doc)
7 points by _8091149529 6y ago|5 comments
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by _8091149529 6y ago
A contrarian view: Quantum Computing would not be near the top of my list of things to teach in high schools. The students would be better off learning about scientific ideas that have a proven track record, and enable or explain functionin
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by _8091149529 6y ago
My case: Presently in US on a cap-exempt H1B. Planning to resign from my current position in a few months' time, and (eventually) relocate to another country. Q: Can I make use of the 60-day grace period to stay in US after I resign? I
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by _8091149529 6y ago
Continuing: Google (or anyone else) hasn't shown an implementation of an error correcting code, so we do not have data points for a model-free "ruler extrapolation" of logical error rate vs. lattice size. In fact, I think the
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by _8091149529 6y ago
Yes, to an extent, but the case is not closed by any means. From memory, the logical error rate target is 1e-12. Clearly, quite a sizeable leap of faith is needed to extrapolate from the Martinis results to this value.
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by _8091149529 6y ago
It's tempting to dismiss that write-up due to its incendiary style, but I find that many of its "factory floor" level insights ring true to me. As an experimentalist, I would agree with the sentiment that the potential future
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by _8091149529 6y ago
Title of the post is misleading: The newly-funded centers will address three different topics in the field of Quantum Information Science (QIS). Quantum computing (the integer-factoring kind) is the focus of only the UC Berkeley-led consort
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by _8091149529 6y ago
As a practicing physicist in the field, I think I'm qualified to reply. The question is a valid one, and I've heard it a few times before from other researchers. In brief, the irreversible heat dissipation, calculated from the cha
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by _8091149529 6y ago
I'm a physicist working in a related field, but not involved with this research in any way. I'd like to provide a bit of context and point out an important technical detail that is not touched upon in the phys.org story. The thing
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by _8091149529 6y ago
As someone who started off in "quantum" in similar conditions around the same time, but decided to stay on the academic researcher track: A great deal of the recent progress has been on honing, parallelizing, and automating the sa

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