When atoms cross a region they should never be able to enter, how long do they spend inside it? Proud of our team at @uoftphysics and @CIFAR_News for answering this question: https://t.co/u1559ja0Zh (Full article at https://t.co/4ZZPt9yzX7) #quantum #tunneling #QMFoundations

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:

Not to make light of tragic context, but could be a great opportunity for Canada, were not our governments *almost* equally short-sighted – eg, there's no hint that our dept will have the freedom to much relax its quota on int'l student intake, as much as we'd like to have them.

"The sciences will see a 75% reduction in new PhD slots, and departments in the arts and humanities will see a reduction of 60%, reports The Harvard Crimson." Whoa.

Definitely in the running for the best press (\approx) coverage our work has ever gotten –  photon claps back! https://t.co/SZ3ZY1WanL

Wow, 9 years on, and D-Wave's travelling salesmanship is alive & well! (Timely facebook memory, the very day I run across @quthermo_comp's new paper!) https://t.co/ZODSCjVa98

#QuantumComputing (but also shakes the very foundations of our view of reality). https://t.co/5JRO80vcjo #QuantumTunneling #QuantumInformation #NobelPrize #SuperconductingQubits #FoundationsOfQM

Remember, in this #InternationalYearOfQuantum, that contrary to the CW that quantum phenomena are proper only to the microscopic world, these effects persist even for collections of many, many particles: and this (regardless of architecture) is fundamentally what may enable

(around 2018) holding a superconducting circuit Devoret & Martinis had worked on (in 1989) in Daniel Estève's group to carry out one of the first-ever measurements of a tunneling time (close to my heart).

Besides laying the groundwork for what would become today's #SCQubits, the #Nobel page observes that this yr's laureates' work showed that quantum effects can be "made concrete in a system big enough to be held in the hand" – in recognition of this, here's a photo of my own hand

Happy day of Quantum, and congratulations to John Clarke, Michel Devoret, & John Martinis! #NobelPrize #SuperconductingQubits #QuantumTunneling https://t.co/5JRO80uEtQ https://t.co/logvauYGnp

Instead of getting sucked in by headlines about algorithmic bond trading (if you must, read Scott Aaronson instead), feast your eyes on a real experimental tour de force–Endres's team has scaled optical tweezer arrays to 6000 atoms! https://t.co/nNIiBRwBLO https://t.co/hE3r5Ry71t

Our own Amar Vutha packs the house & treats us to his creative (and accessible!) take on using nuclear spins to hunt for Snark Matter (credits to Lewis Carroll, obvs). https://t.co/RGTNlPUMMp

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.]

^* – 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.)

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

Chuffed^* to announce our theory on how long an unabsorbed photon causes atoms to spend in the excited state is out: https://t.co/F9p303hCPW It extends the dichotomy to a confounding "simple to state, but looks wrong; turns out to be right, but this is difficult to prove."

Reminder! Help Canada celebrate "100 Years of #Quantum" – abstract deadline coming up fast, 19 September! Please rt See https://t.co/XhKusUVR5t for details @QuantumIQC @Perimeter #QuantumInCanada

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 https://t.co/l7D3GHArYl .) @CQIQC_Toronto

and @UofTEngineering is seeking an Assistant Professor in #Photonics #QuantumTechnologies ( https://t.co/u59CRvu1H2) Send us your best, your brightest, your yearning to do #QuantumInCanada! Please reshare.

We are also seeking an Associate/Full Professor in #QuantumComputing, joint in @uoftphysics and @UofTCompSci ( https://t.co/jp7K9Hk6vA –– **closes 18 Sep**!);