| Walt Mankowski via plug on 23 May 2026 04:09:34 -0700 |
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| Re: [PLUG] Quantum computing talk Thursday night at Princeton ACM |
I'm glad you enjoyed it, and now I'm even more sad that I missed it! But I'm glad to hear there's a video of it. I know some of the organizers up there. If I see a link to the video I'll post it here. I was also interested of this line in Michael's email > why that technology failed while quantum computing succeeded. since as far as I can tell from an outsider, it hasn't succeeded yet! Did the speaker give a sense that we'll have actual quantum computers any time soon? Walt On Fri, May 22, 2026 at 02:58:37PM -0400, Alan D. Salewski via plug wrote: > I was on the Zoom session as a wallflower. A fair amount of the physics went > over my head, and I was not familiar with all the players in the story, but > it was fascinating hearing Terry Bollinger's retracing the history of the > ideas behind quantum computing -- with an emphasis on a split in > perspectives between Richard Feynman and Hugh Everett -- and how that > affected how we think about it today. I'm looking forward to getting my > hands on the video recording so I can study it better and maybe track down > some of the referenced writings. > > There were quite a few ideas presented that were mind-bending to me. A > particular idea that was new to me was that "Maxwell's equations cannot > explain all electromagnetic phenomena if they are interpreted /only/ in the > future direction". (Emphasis in original) I took a screenshot of the (CC BY > 4.0)[0] slide, and am sharing a plain text approximation of it here as a > taste: > > <quote> > The Strange Issue of Recoil > > > => Contrary to what you likely have heard... > > -> Maxwell's equations cannot explain all electromagnetic > phenomena _if they are interpreted /only/ in the future direction_ > > -> The missing behavior: _Recoil after charge acceleration_ > > -> The only fully conserving momentum-energy source of local > recoil is the _particle that absorbs the photon in the future_ > > -> _That particle could be billions of years in the future > > => An experiment: Shine a laser into the darkest part of space > > -> With sufficiently good instruments, you can _detect a recoil effect_ > > -> _That recoil is a testable example of the future affecting you now_ > </quote> > > If that sounds interesting to you, then you'll love the video section where > that leads into a discussion of quantum computing in two-dimensional time. > > As he notes elsewhere on this thread, Michael Lazin was also there and asked > Bollinger a couple of interesting questions, one which led to an interesting > high-level discussion of chemical computers (another topic I need to read up > on; thanks, Michael, for bringing them up). > > Thanks, Walt, for bringing that meeting to our attention. I'm very happy > that I was able to make it. > > -Al > > > [0] CC BY 4.0 > https://creativecommons.org/licenses/by/4.0/ > > -- > a l a n d. s a l e w s k i > ads@salewski.email > salewski@att.net > https://github.com/salewski > > > On 2026-05-22 10:34:27, Walt Mankowski via plug <plug@lists.phillylinux.org> spake thus: > > I needed to run some errands after work and totally forgot all about > > this until this morning. Did anyone attend? > > > > Walt > > > > On Wed, May 20, 2026 at 05:20:06PM -0400, Michael Lazin via plug wrote: > > > I will try to attend this because I am interested in the idea of quantum > > > cryptography. I am more interested in the creation and protection of > > > quantum cryptographic keys because the qubit provides a physics level > > > approach to protecting an encryption key because if you view or copy the > > > key the state of the qubit changes and you cannot know what state the qubit > > > was in before it was modified. Please excuse me if this explanation is too > > > simple. > > > > > > > > > Michael Lazin > > > > > > .. τὸ γὰρ αὐτὸ νοεῖν ἐστίν τε καὶ εἶναι. > > > > > > On Wed, May 20, 2026 at 5:01 PM Walt Mankowski via plug < > > > plug@lists.phillylinux.org> wrote: > > > > > > > Hi all, > > > > > > > > Tomorrow night Terry Bollinger will be giving a talk on quantum > > > > computing at the Princeton ACM. Here's a brief synopsis: > > > > > > > > === > > > > > > > > A Deep-Physical Look at Quantum Computing > > > > > > > > The talk begins with a description of how David-Deutsch-style quantum > > > > computing was supposed to undermine all prime-number cryptography > > > > methods by using only 15 qubits. Not 15 thousand or 15 million: 15 > > > > qubits. What happened after that, and why usable quantum computing > > > > continues to stump the world decades later, is the topic of this talk. > > > > > > > > === > > > > > > > > The meeting is online and starts at 8 PM EDT tomorrow night, May > > > > 21. For more information go to > > > > > > > > https://princetonacm.acm.org/meetings/mtg2605.pdf > > > > > > > > Walt > > > > ___________________________________________________________________________ > > > > Philadelphia Linux Users Group -- > > > > http://www.phillylinux.org > > > > Announcements - > > > > http://lists.phillylinux.org/mailman/listinfo/plug-announce > > > > General Discussion -- > > > > http://lists.phillylinux.org/mailman/listinfo/plug > > > > > > > > > ___________________________________________________________________________ > > > Philadelphia Linux Users Group -- http://www.phillylinux.org > > > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > > > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug > > > > ___________________________________________________________________________ > > Philadelphia Linux Users Group -- http://www.phillylinux.org > > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug > ___________________________________________________________________________ > Philadelphia Linux Users Group -- http://www.phillylinux.org > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug