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)
(Physics prof, Univ Toronto; Director, CIFAR programme on Quantum Information Science; New Yorker / Parisian –in-absentia)
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:
but we have to acknowledge how much of the so-called "ecosystem" this captures:
November 5, 2025 at 1:11 PM
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:
but we have to acknowledge how much of the so-called "ecosystem" this captures:
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
see journals.aps.org/prxquantum/a... for more on her actual work...
#Contextuality #QuantumThermodynamics
October 8, 2025 at 5:12 PM
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
see journals.aps.org/prxquantum/a... for more on her actual work...
#Contextuality #QuantumThermodynamics
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
There's no stopping it now!
#NobelPrize #SuperconductingQubits #QuantumTunneling
nobelprize.org/prizes/physics…www.nobelprize.org/uploads/2025...df
October 7, 2025 at 1:35 PM
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
There's no stopping it now!
#NobelPrize #SuperconductingQubits #QuantumTunneling
nobelprize.org/prizes/physics…www.nobelprize.org/uploads/2025...df
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.]
[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.]
September 24, 2025 at 3:24 PM
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.]
[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.]
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."
It extends the dichotomy to a confounding "simple to state, but looks wrong; turns out to be right, but this is difficult to prove."
September 22, 2025 at 11:08 PM
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."
It extends the dichotomy to a confounding "simple to state, but looks wrong; turns out to be right, but this is difficult to prove."
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
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
September 8, 2025 at 6:30 PM
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
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
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
Please RT.
(See cqiqc.physics.utoronto.ca/bell-prize/n... .)
@CQIQC_Toronto
September 6, 2025 at 1:50 AM
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
Please RT.
(See cqiqc.physics.utoronto.ca/bell-prize/n... .)
@CQIQC_Toronto
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.
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.
August 28, 2025 at 7:18 PM
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.
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.
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
(Pls rebleep!)
See
cqiqc.physics.utoronto.ca/bell-prize/n...
Deadline 30 August 2025.
#QuantumInformation #FoundationsOfQM #BellPrize #QuantumPhysics
August 13, 2025 at 2:17 PM
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
(Pls rebleep!)
See
cqiqc.physics.utoronto.ca/bell-prize/n...
Deadline 30 August 2025.
#QuantumInformation #FoundationsOfQM #BellPrize #QuantumPhysics
Fearing yet more war;
hoping for peace.
May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?
hoping for peace.
May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?
June 22, 2025 at 7:45 AM
Fearing yet more war;
hoping for peace.
May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?
hoping for peace.
May war-mongering leaders be removed, and innocents everywhere be safe. What else is worth saying?
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.
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.
June 21, 2025 at 4:56 PM
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.
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.
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.
May 1, 2025 at 6:52 AM
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.
Just sharing for the yocks.
Seriously, YOCTOjoules.
How many of you have even *heard* that prefix before?
That's 10^-5 visible photons, in case you're keeping count.
"Fieldoscopy." arxiv.org/abs/2504.13121
Seriously, YOCTOjoules.
How many of you have even *heard* that prefix before?
That's 10^-5 visible photons, in case you're keeping count.
"Fieldoscopy." arxiv.org/abs/2504.13121
April 18, 2025 at 9:11 AM
Just sharing for the yocks.
Seriously, YOCTOjoules.
How many of you have even *heard* that prefix before?
That's 10^-5 visible photons, in case you're keeping count.
"Fieldoscopy." arxiv.org/abs/2504.13121
Seriously, YOCTOjoules.
How many of you have even *heard* that prefix before?
That's 10^-5 visible photons, in case you're keeping count.
"Fieldoscopy." arxiv.org/abs/2504.13121
I was apprehensive about big airlines moving their routing to #QuantumComputers so early, but here we go... Lufthansa has inaugurated their new double-slit service!
(It feels like we landed safely, but that may just be because of that eavesdropping observer in the background.)
(It feels like we landed safely, but that may just be because of that eavesdropping observer in the background.)
April 2, 2025 at 7:47 AM
I was apprehensive about big airlines moving their routing to #QuantumComputers so early, but here we go... Lufthansa has inaugurated their new double-slit service!
(It feels like we landed safely, but that may just be because of that eavesdropping observer in the background.)
(It feels like we landed safely, but that may just be because of that eavesdropping observer in the background.)
You know you have achieved peak fringe when someone publishes an April Fool's joke and you're disappointed they didn't cite your earlier work...;)
home.cern/news/news/ph...
home.cern/news/news/ph...
April 1, 2025 at 4:03 PM
You know you have achieved peak fringe when someone publishes an April Fool's joke and you're disappointed they didn't cite your earlier work...;)
home.cern/news/news/ph...
home.cern/news/news/ph...
Belatedly sharing the great news that my colleague Joseph Thywissen has been named a Fellow of @OpticaWorldwide !
Congratulations to a jolly good one!
cqiqc.physics.utoronto.ca/news/recent-...
@CQIQC_Toronto @uoftphysics
Congratulations to a jolly good one!
cqiqc.physics.utoronto.ca/news/recent-...
@CQIQC_Toronto @uoftphysics
March 30, 2025 at 3:21 PM
Belatedly sharing the great news that my colleague Joseph Thywissen has been named a Fellow of @OpticaWorldwide !
Congratulations to a jolly good one!
cqiqc.physics.utoronto.ca/news/recent-...
@CQIQC_Toronto @uoftphysics
Congratulations to a jolly good one!
cqiqc.physics.utoronto.ca/news/recent-...
@CQIQC_Toronto @uoftphysics
Kyle doing a masterful job of motivating and explaining our work on atomic excitation times in his #CQIQC seminar:
www.physics.utoronto.ca/research/qua...
[to appear on CQIQC youtube channel]
www.physics.utoronto.ca/research/qua...
[to appear on CQIQC youtube channel]
March 28, 2025 at 3:25 PM
Kyle doing a masterful job of motivating and explaining our work on atomic excitation times in his #CQIQC seminar:
www.physics.utoronto.ca/research/qua...
[to appear on CQIQC youtube channel]
www.physics.utoronto.ca/research/qua...
[to appear on CQIQC youtube channel]
Ok, something to remember the next time we're complaining about our "publish or perish" culture...
#AcademicChatter
#AcademicChatter
February 28, 2025 at 2:06 PM
Ok, something to remember the next time we're complaining about our "publish or perish" culture...
#AcademicChatter
#AcademicChatter
Stop slurping at Microsoft's trough,
and read about something interesting instead,
like our old group member Luciano's efforts to measure the onset of reality
(or sth like that -- I still have to read the paper 😉
arxiv.org/abs/2502.13932
and read about something interesting instead,
like our old group member Luciano's efforts to measure the onset of reality
(or sth like that -- I still have to read the paper 😉
arxiv.org/abs/2502.13932
February 21, 2025 at 2:28 PM
Stop slurping at Microsoft's trough,
and read about something interesting instead,
like our old group member Luciano's efforts to measure the onset of reality
(or sth like that -- I still have to read the paper 😉
arxiv.org/abs/2502.13932
and read about something interesting instead,
like our old group member Luciano's efforts to measure the onset of reality
(or sth like that -- I still have to read the paper 😉
arxiv.org/abs/2502.13932
Hmm.
Came back from a few weeks out of the loop to run into this headline, and must just say:
At least they're honest enough to put it on the "Business" page instead of "Science" ;)
[Honestly, good luck to them. I'll be thrilled if this time they're telling the truth. ;} ]
Came back from a few weeks out of the loop to run into this headline, and must just say:
At least they're honest enough to put it on the "Business" page instead of "Science" ;)
[Honestly, good luck to them. I'll be thrilled if this time they're telling the truth. ;} ]
February 21, 2025 at 8:04 AM
Hmm.
Came back from a few weeks out of the loop to run into this headline, and must just say:
At least they're honest enough to put it on the "Business" page instead of "Science" ;)
[Honestly, good luck to them. I'll be thrilled if this time they're telling the truth. ;} ]
Came back from a few weeks out of the loop to run into this headline, and must just say:
At least they're honest enough to put it on the "Business" page instead of "Science" ;)
[Honestly, good luck to them. I'll be thrilled if this time they're telling the truth. ;} ]
The pigeons have come home to roost, at long last!
Congrats to Noah, Aharon, & the rest – just out in PNAS:
how strong & weak quantum measurements compare in regards to sum rules and other desiderata, by using the seeming violation of the "pigeonhole principle."
www.pnas.org/doi/10.1073/...
Congrats to Noah, Aharon, & the rest – just out in PNAS:
how strong & weak quantum measurements compare in regards to sum rules and other desiderata, by using the seeming violation of the "pigeonhole principle."
www.pnas.org/doi/10.1073/...
February 18, 2025 at 1:48 PM
The pigeons have come home to roost, at long last!
Congrats to Noah, Aharon, & the rest – just out in PNAS:
how strong & weak quantum measurements compare in regards to sum rules and other desiderata, by using the seeming violation of the "pigeonhole principle."
www.pnas.org/doi/10.1073/...
Congrats to Noah, Aharon, & the rest – just out in PNAS:
how strong & weak quantum measurements compare in regards to sum rules and other desiderata, by using the seeming violation of the "pigeonhole principle."
www.pnas.org/doi/10.1073/...
February 14, 2025 at 6:42 AM
Nice, & odd, to visit a uni and realize that the postdoc I used to know at UofT is now chair of Physics here,
but esp to have him claim that auditing my course waybackwhen has had lasting influence on his career.
In general, lots of friendly & creative people here I haven't seen in too long.
but esp to have him claim that auditing my course waybackwhen has had lasting influence on his career.
In general, lots of friendly & creative people here I haven't seen in too long.
January 22, 2025 at 2:44 PM
Nice, & odd, to visit a uni and realize that the postdoc I used to know at UofT is now chair of Physics here,
but esp to have him claim that auditing my course waybackwhen has had lasting influence on his career.
In general, lots of friendly & creative people here I haven't seen in too long.
but esp to have him claim that auditing my course waybackwhen has had lasting influence on his career.
In general, lots of friendly & creative people here I haven't seen in too long.
January 22, 2025 at 2:25 PM