hamish todd 2022-04-11 21:12:57 Hey folks, here's another update on my geometric algebra things! This one is something completely different from the previous editors, which have been about creative coding. This one is about quantum computing: https://www.youtube.com/watch?v=yemEu93lnvI
Ivan Reese 2022-04-12 01:27:47 That was fascinating, and way over my head in about two or three different ways. I'm only vaguely familiar with GA (and Clifford algebras more specifically), and again only vaguely familiar with QC (at a pop-sci level). But I found this video fairly easy to follow and enjoyable. I don't have any domain-relevant feedback to offer, but I just wanted to share my enjoyment. I look forward to the next update!
Robin Allison 2022-04-13 03:56:17 That would be fantastic if you could represent entangled qubits with spacetime algebra like that! I know some quantum computing from Michael Nielsen's and Andy Matuschak's mnuemonic medium pieces, and I agree it would be neat to be able to really visualize everything. I'm surprised you can visualize quantum states with the bloch sphere because that throws away all of the phase information. Does that have anything to do with using spacetime algebra to represent entangled qubits?
William Taysom 2022-04-13 04:02:53 If that crystal sphere is "a visualization two entangled qubits," what happens with more than two?
Likewise, with your circuit example, you have two inputs and two outputs. In the case where they're entangled, if you know the crystal sphere for one of the outputs, can you tell what the other one will be? Is each output picture a visualization of the same two qubit system, differing from the perspective of the corresponding input?
hamish todd 2022-04-13 09:33:12 @Robin Allison Like the bloch sphere this representation throws away global phase - but that's ok, desirable even, since global phase isn't "experimentally meaningful" and therefore arguably nonexistant!
hamish todd 2022-04-13 09:53:31 @William Taysom hrrrrrrrrrgh so I wanted to have a version of it that kiiiiind of scales to >2 qubits, this is part of my problem. I know that it implicitly involves a choice of whether it's a visualization of qubit1-entangled-with-qubit2 VERSUS qubit2-entangled-with-qubit1. And then I suspect that, this choice made, you can ask about qubit1-entangled-with-[the rest of a state of N qubits]
hamish todd 2022-04-13 09:54:24 @William Taysom To your second question, yes, to your third question, yes
William Taysom 2022-04-13 10:13:21 As I still don’t know much about this topic, would the “shape” of many qubits entangled begin to reflect the problem being modeled?
Ivan Reese 2022-04-12 06:08:35 Future of Coding • Episode 55
Man-Computer Symbiosis by J.C.R. Licklider
https://futureofcoding.org/episodes/055
The podcast is back with an exciting new development — Jimmy Miller has joined the show as co-host. We'll be reading a number of papers from the history of our field, ranging from the beloved classics we all know by heart, to obscure and mysterious potential alternate histories that never came to be, and perhaps — perhaps! — one or two papers that really deserve nothing more than to wrap a dead fish. First up, squarely in the beloved camp, a classic from "Licky" himself.
I hope you enjoy this episode — the paper was a fun read, and I think that really came through in our discussion. Also, I want to personally thank Jimmy for suggesting we do this together (and then patiently waiting for 9 months for me to finish Crosscut). I think this will breathe new life into the podcast, and help me keep new episodes coming out at a regular clip in the gaps where I'm too overwhelmed with * gestures everywhere * to do interviews. Here we go!
Mariano Guerra 2022-04-13 14:06:45 Ivan Reese 2022-04-14 01:17:16
In 1986> , > Pito Salas> joined the Advanced Technology Group at Lotus to think about a totally new kind of spreadsheet.
Something about seeing your birth year that puts things into a particular, and particularly overwhelming, kind of perspective.
Ivan Reese 2022-04-14 01:19:20
Pito showed Steve a clunky, character-based, primitive spreadsheet, but all of the elements of the future were there: there were formulas at the bottom of the spreadsheet, rather than integrated in the cells; it was multi-dimensional; and the user could instantly call up different views of the same data set.
"all of the elements of the future were there" — Feels like they're still there. Sigh.
Tom Larkworthy 2022-04-15 10:40:30 Today I finished automating the 'Google 'vs' trick' with an online moldable notebook. https://observablehq.com/@tomlarkworthy/google-vs-trick?1. The dog manifold is pretty interesting as people do compare dog breeds and it's quite clear what is a dog breed and what is synonym confusion.
Maikel van de Lisdonk 2022-04-16 11:27:13 Hi, I've been working on selecting multiple nodes and bundling them in a subflow or section in my visual webassembly compiler project. The section is treated as scope for variables.
Since the video is longer then 2 minutes, I post it here : https://youtu.be/0rWAszqVyJo
