Aephraim Steinberg's Avatar

Aephraim Steinberg

@quantumaephraim.bsky.social

Quantum physicist and generally curious human. (Physics prof, Univ Toronto; Director, CIFAR programme on Quantum Information Science; New Yorker / Parisian –in-absentia)

988 Followers  |  175 Following  |  120 Posts  |  Joined: 07.10.2023  |  1.7284

Latest posts by quantumaephraim.bsky.social on Bluesky

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Find me another school whose fundraiser performances include a dramatic recitation of Catullus (in the original, certe) !

Vivat #TheAbelardSchool !

29.11.2025 22:31 — 👍 3    🔁 0    💬 0    📌 0
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Tom Stoppard, playwright who dazzled with verbal gymnastics, dies aged 88 "What's it about?" was a frequent response from bemused theatre-goers to "Rosencrantz and Guildenstern Are Dead", Tom Stoppard's first stage triumph.

😞
The end of an era.
[Extended 20th century, I guess.]

Tom Stoppard, playwright who dazzled with verbal gymnastics, dies aged 88 - www.reuters.com/world/uk/bri...

29.11.2025 18:02 — 👍 8    🔁 0    💬 0    📌 0
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I love quantum computing (& quantum information science, even more), don't get me wrong --
but we have to acknowledge how much of the so-called "ecosystem" this captures:

05.11.2025 13:11 — 👍 36    🔁 5    💬 0    📌 1
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Put in mind of the Infinite Improbability Drive, as I listen to Bárbara Amaral explain over @cqiqc-uoft.bsky.social Quantum Tea how contextuality may power anomalous heat flow…
see journals.aps.org/prxquantum/a... for more on her actual work...

#Contextuality #QuantumThermodynamics

08.10.2025 17:12 — 👍 7    🔁 1    💬 0    📌 1
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Happy day of Quantum, and congratulations to John Clarke, Michel Devoret, & John Martinis!

There's no stopping it now!

#NobelPrize #SuperconductingQubits #QuantumTunneling

nobelprize.org/prizes/physics…www.nobelprize.org/uploads/2025...df

07.10.2025 13:35 — 👍 13    🔁 1    💬 0    📌 0
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Crazy milestone passed over (I think) in silence – as of last November or so, I have spent over half my life as a professor at the University of Toronto.

[Since as people my age understand, I firmly believe I'm in my early 30s, this implies that I became a professor at around 16.]

24.09.2025 15:24 — 👍 1    🔁 0    💬 0    📌 0

Thx, Sylvain -- I do not know and am now thrilled to take a look!
Excited, elated, chuffed, stoked, even!
[But off to prepare & give a lecture first...]

24.09.2025 13:23 — 👍 1    🔁 0    💬 0    📌 0

Looking forward to more great things from Josiah! You're lucky to have him.
On the British theme, I'm torn between "dreary" and "bleak."

24.09.2025 05:44 — 👍 1    🔁 0    💬 1    📌 0

^* – excuse the Briticism, but I'm running out of synonyms for "excited" in this context, and "thrilled" is too stereotypically LInkedIn/Twitter overhype–ish for my taste. (Our next experiment will be on measuring how long an atom spends in its chuffed state.)

22.09.2025 23:08 — 👍 6    🔁 0    💬 1    📌 0

Hopefully the exp't paper will follow its sibling into print shortly, once we remove all the objectionable stuff about what the results actually mean, and deliver "just the facts, ma'am," to mollify our referees, at the risk of putting our readers to sleep+teaching them nothing

22.09.2025 23:08 — 👍 2    🔁 0    💬 1    📌 0
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Chuffed^* to announce our theory on how long an unabsorbed photon causes atoms to spend in the excited state is out: lnkd.in/gF--eQgV

It extends the dichotomy to a confounding "simple to state, but looks wrong; turns out to be right, but this is difficult to prove."

22.09.2025 23:08 — 👍 6    🔁 0    💬 2    📌 0
Assistant Professor- Photonics Quantum Technologies Assistant Professor- Photonics Quantum Technologies

and
U of T Engineering
is seeking an Assistant Professor in #Photonics #QuantumTechnologies (jobs.utoronto.ca/job/Toronto-...)

Send us your best, your brightest, your yearning to do #QuantumInCanada!

Please reshare.

08.09.2025 18:31 — 👍 1    🔁 1    💬 0    📌 0
Associate Professor/Professor - Quantum Computing Associate Professor/Professor - Quantum Computing

We are also seeking an Associate/Full Professor in #QuantumComputing, joint in
Physics and CS
(jobs.utoronto.ca/job/Toronto-... –– **closes 18 Sep**!);

08.09.2025 18:31 — 👍 0    🔁 0    💬 1    📌 0
Assistant Professor - Theoretical Quantum Optics Assistant Professor - Theoretical Quantum Optics

In the Department of Physics, we
are seeking an Assistant Professor in theoretical #QuantumOptics (including AMO, applications to Quantum Information, et cetera – jobs.utoronto.ca/job/Toronto-... );

08.09.2025 18:31 — 👍 0    🔁 0    💬 1    📌 0
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U of T is thrilled to celebrate the Year of Quantum by advertising three new faculty positions!

Please spread the word, encourage friends/mentees to apply, or consider applying yourself.

(Links in rest of thread)
#QuantumOptics #QuantumInformation #AMO
@cqiqc-uoft.bsky.social

08.09.2025 18:31 — 👍 4    🔁 5    💬 1    📌 0
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Nominations for the 2026 #BellPrize are being accepted through September 30th, 2025 – please consider nominating the work from the past 6 yrs which you believe has done the most to advance #Quantum science.

Please RT.

(See cqiqc.physics.utoronto.ca/bell-prize/n... .)
@CQIQC_Toronto

06.09.2025 01:51 — 👍 11    🔁 4    💬 0    📌 0

But after a colossal vacuum failure, this experiment had been down for just over 12 mths, so seeing any cold atoms here at all is just like bringing 3 of my students (& a part of me) back from the dead.
Congratulations Kyle, Vida, & Andy on the fruit of a very frustrating year!

28.08.2025 19:18 — 👍 1    🔁 0    💬 0    📌 0
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Lazaro Felice!
Seeing atoms floating in vacuum and glowing bright in the laser beams that suspend them there (while cooling them millions of times below room temp) should always be inspirational, even if it's now routine for AMO physicists & the MOT is nearing its 40th birthday.

28.08.2025 19:18 — 👍 7    🔁 0    💬 1    📌 0
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Nominate the most innovative work on Fundamental Issues in Quantum Mechanics and their Applications for the 2026 John Stewart Bell Prize!

(Pls rebleep!)

See
cqiqc.physics.utoronto.ca/bell-prize/n...
Deadline 30 August 2025.

#QuantumInformation #FoundationsOfQM #BellPrize #QuantumPhysics

13.08.2025 14:17 — 👍 10    🔁 6    💬 0    📌 1
U2 - I Still Haven't Found What I'm Looking For (Official Music Video)
YouTube video by U2VEVO U2 - I Still Haven't Found What I'm Looking For (Official Music Video)

Heads-up: we'll be searching this Fall for a tenure-stream faculty member in Theoretical #QuantumOptics (#AMOPhysics #QuantumInformation)
at U of T Physics
@cqiqc-uoft.bsky.social

Official ad out next month – please alert potential strong candidates you may know!

www.youtube.com/watch?v=e3-5...

23.07.2025 15:57 — 👍 6    🔁 4    💬 0    📌 0
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Tunnelling photons challenge interpretation of quantum mechanics Measurements with confined photons challenge a prediction that particles that ‘quantum tunnel’ into infinitely long barriers will get stuck.

(See also Alessandro Fedrizzi & Fabio Biancalana's N&V, www.nature.com/articles/d41... )

02.07.2025 20:30 — 👍 0    🔁 0    💬 0    📌 0
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Energy–speed relationship of quantum particles challenges Bohmian mechanics - Nature The study of the relationship between particle speed and negative kinetic energy, arising in regions in which, according to classical mechanics, particles are not allowed to enter, reveals behaviour t...

Super-fascinating new article out, on the speed of particles in a forbidden region.
For me, it raises more questions than it answers, which is of course my favorite kind of experiment.
Kudos to the authors for a novel approach and technical tour de force!

www.nature.com/articles/s41...

02.07.2025 20:30 — 👍 1    🔁 0    💬 1    📌 0

Meanwhile, let's all keep trying to learn this lesson about understanding in what way every one is right (even when they're wrong).

01.07.2025 19:22 — 👍 2    🔁 0    💬 0    📌 0
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Finding Peter Putnam The forgotten janitor who discovered the logic of the mind

Finally got around to reading this fascinating article by Amanda Gefter -- kudos on an epic investigation and a gripping story!

Sad but also inspiring.
Thanks for making his writings publicly available - I hope this will lead to new inspirations as well as to restoring his legacy.

01.07.2025 19:21 — 👍 7    🔁 0    💬 1    📌 2
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University of Virginia President Resigns Under Pressure From Trump Administration

Disgusting
Weaponizing the justice department, and research funding, against what the US has left of intellectual institutions.
Against one of the real good guys, at that.
His crime?
Not dismantling efforts in support of equity vigorously enough.
www.nytimes.com/2025/06/27/u...

27.06.2025 21:46 — 👍 3    🔁 1    💬 0    📌 0
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Fearing yet more war;
hoping for peace.

May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?

22.06.2025 07:44 — 👍 8    🔁 1    💬 0    📌 0
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RIP Ray Laflamme, gone too soon.

Ray was a stellar scientist, the founding director of ⁦‪the IQC‬⁩ and ⁦‪of CIFAR's‬⁩ Quantum Information program, but more importantly a warm & generous human who built community and helped many (particularly junior researchers).

May his memory be a blessing.

21.06.2025 16:56 — 👍 107    🔁 20    💬 3    📌 4
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Traceable random numbers from a non-local quantum advantage - Nature A study demonstrates a public generator of random numbers based on device-independent techniques, with the randomness being fully auditable and traceable.

Krister Shalm in the news again, with a new paper on the Colorado Random Number beacon.

Well, we always did say that getting a paper into Nature was a roll of the dice...

Always exciting to see our group members go on to lead such creative & successful efforts!

www.nature.com/articles/s41...

11.06.2025 19:13 — 👍 2    🔁 1    💬 0    📌 0
Joseph Eberly | Optica Optica is the leading society in optics and photonics. Quality information and inspiring interactions through publications, meetings, and membership.

Sad news.
A great scientist & author, of course, but also a kind man and thoughtful teacher.
He will be missed.
www.optica.org/about/newsro...

02.05.2025 17:01 — 👍 4    🔁 1    💬 0    📌 0
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I like to hope we're already doing this in Physics (at least in most groups..), but a discussion around a more systematic approach like this would not be out of place.

01.05.2025 06:52 — 👍 4    🔁 0    💬 0    📌 1

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