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#quantum

11 posts10 participants0 posts today
Public
cephasteom

One of the useful things about doing a PhD is that you have to do the fiddly bits at the end of a project, that you'd normally ignore.

So, I've done a series of tutorials for Zen covering the basics of the UI right up to its capabilities as a live coding environment for quantum computer music. I'll post them here. All feedback welcome!

The UI:
youtube.com/watch?v=SkicbbU3fO

YouTubeZen Live Coding: #1 The UIBy Cephas Teom
#livecoding#quantum#music
Public
Mikko Tuomi

At long last, a unified theory combining #gravity with the other fundamental forces—electromagnetism and the strong and weak nuclear forces—is within reach.

Bringing gravity into the fold has been the goal of generations of physicists, who have struggled to reconcile the incompatibility of two cornerstones of modern physics: #quantum field theory and Einstein’s theory of gravity.

Researchers at Aalto University have developed a new quantum theory of gravity which describes gravity in a way that’s compatible with the Standard Model of particle physics, opening the door to an improved understanding of how the #universe began.

#physics #cosmology
aalto.fi/en/news/new-theory-of

www.aalto.fiNew theory of gravity brings long-sought Theory of Everything a crucial step closer | Aalto UniversityA quantum theory of gravity would clear the path to answering some of the biggest questions in physics.
Public
Steven Saus [he/him]

(06 May) In a first, physicists spot elusive ’free-range’ atoms — confirming a century-old theory about quantum mechanics

Physicists have used a novel technique to observe individual atoms interacting in free space for the first time ever. The new technique confirms a century-old quantum mechanical theory.

s.faithcollapsing.com/2lrgt
Archive: ais: archive.md/wip/3L3qT ia: s.faithcollapsing.com/we1xv

#physics-&-mathematics #quantum-physics

On the top, and illustration showing how a lattice traps atoms in place. On the bottom, microscope images showing atoms.
Public
Scott Francis

"While other groups have developed experimental quantum networks, RoQNET is unique in its use of integrated quantum photonic chips for quantum light generation and solid-state based quantum memory nodes."

Rochester Quantum Network connects two campuses across 11 miles of fiber; focus is on distributed #quantum entanglement testing.

phys.org/news/2025-05-photon-t

Phys.org · Single-photon technology powers 11-mile quantum communications network between two campusesBy Luke Auburn
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The Krononaut Moon Project 🌑

   
#ThoughtExperiment: Many #Worldlets?

or in other words, fractions of #World, not the whole World. #TimeTraveler #theories often involve splitting or multiplying #universes … But if we think this through further, its scope might not be quite so universal as it is typically presented …

🔗 aus.social/@KronoMoon_TotalLun

Aus.SocialKrononaut Moon 🌕 2025 Sep 07 (@KronoMoon_TotalLunarEclipse@aus.social)    #ThoughtExperiment: Many #Worldlets? or in other words, fractions of #World, not the whole World. #TimeTraveler #theories often involve splitting or multiplying #universes. Time Travel events divide #spacetime into two near-identical clones. Grandfather lives and does not, you did not meet yourself and then you did. But if we think this through further, its scope might not be quite so universal as it is typically presented. Take 3 heavenly bodies: Mother #Earth, the #AlphaCentauri triple star system (at 4+ light years away), and #Polaris, the #NorthStar (at 400+ light years away). Now we program our #TimeMachine to take us back one year (#retrograde) where we meet ourselves. Hi us guys! This all takes place in one year. There's the original us, there's us leaving the present, and there's us meeting ourselves a year earlier — standard #boilerplate #scifi #movie #script. Alpha Centauri will have to wait another 3 years before any of this information can get to there. This is related to the concept of a #lightcone which expands at the speed of light. This doesn't sound quite so much like a newborn twin universe, does it? Now what about the North Star? It will have to wait 433 years for news of our Time Travel event. And that's still pretty much in our tiny #celestial neighborhood. The point is that the effects of such events are largely localized and rapidly diluted as we move farther away. This still has its problems, but it doesn't quite feel like the whole universe dividing into two — maybe part of it. Possibilities are that in moving further out, the effects of a Time Travel incident may be 'blurred out', as are anomalous samples in the law of large numbers. 🔗 https://Wikipedia.org/wiki/Many-worlds_interpretation … #ManyWorlds 🔗 https://Wikipedia.org/wiki/Light_cone … #LightCone 🔗 https://Wikipedia.org/wiki/Time_travel#Absence_of_time_travelers_from_the_future … #TimeTravel 🔗 https://Wikipedia.org/wiki/Law_of_large_numbers … #LawOfLargeNumbers #TimeTravelTuesday #Quantum #Physics #Kronodon
#TimeTravelTuesday#Quantum#Physics
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Krononaut Moon 🌕 2025 Sep 07

   
#TimeTravelTuesday #ThoughtExperiment: Many #Worldlets?

or in other words, fractions of #World, not the whole World. #TimeTraveler #theories often involve splitting or multiplying #universes. Time Travel events divide #spacetime into two near-identical clones. Grandfather lived or did not, you did not meet yourself or you did. But if we think this through further, its scope might not be quite so universal as typically presented.

Take 3 heavenly bodies: Mother #Earth, the #AlphaCentauri triple star system (at 4+ light years away), and #Polaris, the #NorthStar (at 400+ light years away).

Now we program our #TimeMachine to take us back one year (#retrograde) where we meet ourselves. Hi selves! This all takes place in one year. There's the original us, there's us leaving the present, and there's us meeting our past/original selves a year earlier — standard #boilerplate #scifi #movie #script.

Alpha Centauri will have to wait another 3 years before any of this information can get to there. This is related to the concept of a #lightcone which expands at the speed of light. This doesn't sound quite so much like birthing a twin universe, does it? Now what about the North Star? It will have to wait 433 years for news of our Time Travel event(s). And that's still pretty much in our tiny #celestial neighborhood.

The point is that the effects of such events are largely localized and rapidly diluted as we move farther away. This still has its paradoxical problems, but it doesn't quite feel like the whole universe dividing into two — maybe part of it (a universelet? a subuniverse?) Possibilities are that in moving further out in space-time, the effects of a Time Travel incident may be 'blurred out', as are anomalous numerical samples in the law of large #numbers. If one pours a cup of coffee into a lake, it doesn't change the color of the lake. There is a brief chaotic #glitch before it is no longer measurable.

It is tempting to imagine space-time as "stitching" itself back together. (Glitch & stitch?) Such speculations are related to #StephenHawking's "chronology protection conjecture" of 1992. And along with #blackholes, #entanglement, and other #quantum phenomena, if Time Travel is possible, then we should be looking for it at every scale. We could be surrounded by time-traveling particles everywhere all the #Time.

🔗 Wikipedia.org/wiki/Many-worlds … #ManyWorlds
🔗 Wikipedia.org/wiki/Temporal_pa … #GrandfatherParadox
🔗 Wikipedia.org/wiki/Light_cone … #LightCone
🔗 Wikipedia.org/wiki/Time_travel … #TimeTravelTheory
🔗 Wikipedia.org/wiki/Law_of_larg … #LawOfLargeNumbers
🔗 Wikipedia.org/wiki/Chronology_ … #ChronologyProtectionConjecture

wikipedia.orgMany-worlds interpretation - Wikipedia
#Community#TimeTravel#Research
Continued thread
Public
Nonilex

#Trump aims to slash funding for the National #Science Foundation by >50%, to $3.9B from $8.8B in 2025. The area most affected is #research & #education, including spending for #climate, #CleanEnergy & “woke” social, behavioral & economic #sciences, as well as programs the budget vaguely classifies as “low priority areas of science.”

All programs supported by the #NSF concerning #DEI in the sciences are to be eliminated. But funding for #AI & #quantum information science is to remain the same.

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