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Eli LF

@elilevensonfalk

Associate Prof. of Physics & Astro at USC, running Levenson-Falk Lab and studying all things quantum with superconducting circuits. Personal account: physics, sports, politics, and terrible puns.

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Latest posts by Eli LF @elilevensonfalk

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A Message from Your University President on the Recent Hippopotamus Attacks Dear Faculty, Staff, Students, and AI Summarization Tools, I want to express my deepest gratitude for your patience as we explore innovative soluti...

This is flawless

A Message from Your University President on the Recent Hippopotamus Attacks www.mcsweeneys.net/articles/a-m...

10.03.2026 23:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Quote showing crude oil at $84.14, falling 11.22% on the day

Quote showing crude oil at $84.14, falling 11.22% on the day

Sky, tell me I shouldn't put my whole salary into this...

10.03.2026 15:18 πŸ‘ 6 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

If I do a task, and it helps the university, and my colleague who never does these tasks experiences similar career success, then congratulations to the university on receiving my generous donation!

10.03.2026 15:02 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

An opinion that makes you a fringe radical in this country is that the life of a person who is not an American citizen is not an abstraction, and is worth just as much as that of an American citizen

10.03.2026 01:01 πŸ‘ 1281 πŸ” 309 πŸ’¬ 1 πŸ“Œ 5
Post image
09.03.2026 20:15 πŸ‘ 128 πŸ” 17 πŸ’¬ 5 πŸ“Œ 4

Boy am I glad all the mainstream U.S. Jewish groups spent the last two years loudly proclaiming that there was no absolutely no daylight between the actions of the Israeli State and the Jewish people just in time for the entire world to blame the Jews for a global oil crisis.

09.03.2026 14:02 πŸ‘ 90 πŸ” 18 πŸ’¬ 2 πŸ“Œ 1

I think this deserves at least as much sustained attention from US media as Claudine Gay's dissertation

08.03.2026 12:22 πŸ‘ 5176 πŸ” 1587 πŸ’¬ 46 πŸ“Œ 17

See if they said he helped move the body because the department chair threatened to make him assistant head, that i would believe

07.03.2026 00:31 πŸ‘ 57 πŸ” 4 πŸ’¬ 1 πŸ“Œ 0

Combining the Raman, conditional, and unconditional rotations, we can create any 2-qubit Pauli Hamiltonian with a single pulse!

Vivek did amazing work on this, and I'm glad the community gets to see it! Next up, we'll be working on trimon-trimon coupling, readout, and error suppression encodings.

06.03.2026 19:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Using strong driving, Vivek showed how simultaneously driving multiple CCR transitions can remove conditionality, implementing 2-qubit CR and 1-qubit R gates. And he used Raman transitions to drive CiSWAP and CbSWAP rotations, all with above 99% fidelity.

06.03.2026 19:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

This ZZ is so strong that driving a transition is now a 3-qubit conditional rotation (CCR) gate. And every transition has a distinct frequency, so phase updates can do virtual Phase, CPhase, and CCPhase gates!

06.03.2026 19:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

The trimon is a ring of 4 JJs with capacitor pads at each node. It implements 3 modes of oscillation, all looking like transmons. Importantly, because of the JJ nonlinearity, the modes all have strong dispersive interactions. In the qubit space this looks like >100 MHz ZZ coupling.

06.03.2026 19:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Vivek Maurya led a team from my group, Daniel Lidar's theory group at USC, and R. Vijay's group at TIFR to create a planar version of the "trimon" circuit that Vijay's group invented several years ago. Importantly, the planar geometry allows for strong driving.

06.03.2026 19:19 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Padme-Anakin meme. Anakin: "I strongly coupled 3 transmon modes." Padme, happy: "And you got rid of the ZZ coupling, right?" Anakin looks smug, Padme looks nervous: "And you got rid of the ZZ coupling, right?"

Trust me that it's funny if you've been working on transmons forever and also if you don't have a great sense of humor.

Padme-Anakin meme. Anakin: "I strongly coupled 3 transmon modes." Padme, happy: "And you got rid of the ZZ coupling, right?" Anakin looks smug, Padme looks nervous: "And you got rid of the ZZ coupling, right?" Trust me that it's funny if you've been working on transmons forever and also if you don't have a great sense of humor.

Following @dulwichquantum.bsky.social 's rules, here's our latest result using a multi-mode superconducting circuit to achieve complete Hamiltonian control in a 2-qubit space.

arxiv.org/abs/2603.04566

06.03.2026 19:19 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 1

This is pretty compelling and is one more sign that we desperately need another candidate to step up in Maine, because I don't think Mills can beat Platner

06.03.2026 17:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Small correction: John Bapst wasn't a boarding school when Platner attended. I don't know if Platner was paying tuition, most of the students were using vouchers (Maine has a lot of them because so many towns have no HS). Source: me, I went there for HS too.

06.03.2026 17:35 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Point/Counterpoint

This War Will Shut Off 20% of the Global Petroleum Supply for A Month and Send the Economy into a Stagflationary Tailspin vs. No It Won’t

Published: March 26, 2003

Point/Counterpoint This War Will Shut Off 20% of the Global Petroleum Supply for A Month and Send the Economy into a Stagflationary Tailspin vs. No It Won’t Published: March 26, 2003

06.03.2026 02:51 πŸ‘ 3688 πŸ” 567 πŸ’¬ 35 πŸ“Œ 20
peepeepoopoo
@DeepDishEnjoyer
FOR THE LAST TIME HE CAN'T TACO EVEN IF HE WANTED TO
THE REGION IS NOW FILLED WITH ESSENTIALLY INDEPENDENT WARLORDS WHO HAVE MISSLES AND DRONES AND THE HATE ALL THE ARAB NATIONS SURROUNDING THEM
3:41 PM Β· Mar 5, 2026
Β·
250
 
Views
 https://x.com/deepdishenjoyer/status/2029658607659192732

peepeepoopoo @DeepDishEnjoyer FOR THE LAST TIME HE CAN'T TACO EVEN IF HE WANTED TO THE REGION IS NOW FILLED WITH ESSENTIALLY INDEPENDENT WARLORDS WHO HAVE MISSLES AND DRONES AND THE HATE ALL THE ARAB NATIONS SURROUNDING THEM 3:41 PM Β· Mar 5, 2026 Β· 250 Views https://x.com/deepdishenjoyer/status/2029658607659192732

nobody seems to fucking get this!!!! "the enemy gets a vote" but moreover trump/israel deliberately killed all the people at the top controlling the enemy, which does not destroy the enemy but in fact turns them into a dozen new, smaller enemies!! I feel like i'm going fucking insane

05.03.2026 21:16 πŸ‘ 2183 πŸ” 362 πŸ’¬ 56 πŸ“Œ 22

"I never thought sexual harassment would ruin MY career!" sobs woman who worked for the Sexual Harassment Ruining Careers and Lives administration

05.03.2026 20:06 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm worried when Kristi Noem finds out she's been fired she's going to become America's first obedience school shooter.

05.03.2026 19:38 πŸ‘ 4532 πŸ” 668 πŸ’¬ 72 πŸ“Œ 35

i once watched, from just a few feet away, Steve-O break a light bulb and swallow the glass and he's still smarter than Rogan which is really just saying a lot

05.03.2026 19:56 πŸ‘ 248 πŸ” 44 πŸ’¬ 4 πŸ“Œ 0

Or how the only two options are "this is literally the only acceptable product in the world" vs "this is the lowest bid that falls into the vague category of what I need," rather than "I am an expert and have determined that this is the best tradeoff of performance and price."

04.03.2026 19:43 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah I think GP probably knew what it was and some combination of 1) thought it was badass 2) recognized it after the fact and didn't care

04.03.2026 18:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I also don't claim to be a military history buff, I don't do podcasts with white nationalists, if I was trying to be Senator I'd do my fucking research, etc. I'm not trying to excuse Platner. Just a note that people on bsky overestimate others' knowledge of symbology, literature, and current media

04.03.2026 16:52 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Disclaimers: GP is at least a huge idiot, and OF COURSE I'd research a tattoo. But:

I'm a Jewish guy who loves TMaWL, and did not recognize the symbol before this, because I watched the skit on a shitty 240p rip. If you'd asked me I would have said the skull was front-facing

04.03.2026 16:52 πŸ‘ 1 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

fuck, I’m sorry, I can’t compete with this

03.03.2026 13:29 πŸ‘ 17721 πŸ” 4072 πŸ’¬ 53 πŸ“Œ 834

The last point is critical. The media LOVES war, like you love your kids, your spouse, your parents, but more.

So many of them have dreamed of being war correspondents sending dispatches from the front line. It genuinely confuses them and hurts their feelings when people think it's not a good idea.

03.03.2026 14:58 πŸ‘ 602 πŸ” 150 πŸ’¬ 9 πŸ“Œ 3

Half of my mentions are currently versions of the left; half are versions of the right.

02.03.2026 23:25 πŸ‘ 1801 πŸ” 126 πŸ’¬ 121 πŸ“Œ 28

Raytheon Executive: I know you’re skeptical about buying American again. But hear me out. The MIM-104 Patriot is the only surface to air missile system with a proven track record of success against the US Air Force.

Danish Defense Minister: Continue.

02.03.2026 14:43 πŸ‘ 5846 πŸ” 1296 πŸ’¬ 53 πŸ“Œ 39

Those three downed jets run around $90 million each.

It cost $20 million a year to operate the food kitchens serving 816,000 people in Sudan.

02.03.2026 12:50 πŸ‘ 2913 πŸ” 961 πŸ’¬ 49 πŸ“Œ 30