Let gravity do its work

One day, early this spring, I found myself in a hotel elevator with three other people. The cohort consisted of two theoretical physicists, one computer scientist, and what appeared to be a normal person. I pressed the elevator’s 4 button, … Continue reading → | Continue reading


@quantumfrontiers.com | 1 day ago

To thermalize, or not to thermalize, that is the question.

If Hamlet had been a system of noncommuting charges, his famous soliloquy may have gone like this… To thermalize, or not to thermalize, that is the question:Whether ’tis more natural for the system to sufferThe large entanglement of thermalizing dynamics,Or … Continue reading → | Continue reading


@quantumfrontiers.com | 19 days ago

How I didn’t become a philosopher (but wound up presenting a named philosophy lecture anyway)

Many people ask why I became a theoretical physicist. The answer runs through philosophy—which I thought, for years, I’d left behind in college. My formal relationship with philosophy originated with Mr. Bohrer. My high school classified him as a religion … Continue reading → | Continue reading


@quantumfrontiers.com | 29 days ago

My experimental adventures in quantum thermodynamics

Imagine a billiard ball bouncing around on a pool table. High-school level physics enables us to predict its motion until the end of time using simple equations for energy and momentum conservation, as long as you know the initial conditions … Continue reading → | Continue reading


@quantumfrontiers.com | 1 month ago

Noncommuting charges are much like Batman

Understanding a character’s origins enriches their narrative and motivates their actions. Take Batman as an example: without knowing his backstory, he appears merely as a billionaire who might achieve more by donating his wealth rather than masquerading as a bat … Continue readin … | Continue reading


@quantumfrontiers.com | 1 month ago

The quantum gold rush

Even if you don’t recognize the name, you probably recognize the saguaro cactus. It’s the archetype of the cactus, a column from which protrude arms bent at right angles like elbows. As my husband pointed out, the cactus emoji is … Continue reading → | Continue reading


@quantumfrontiers.com | 1 month ago

A classical foreshadow of John Preskill’s Bell Prize

Editor’s Note: This post was co-authored by Hsin-Yuan Huang (Robert) and Richard Kueng. John Preskill, Richard P. Feynman Professor of Theoretical Physics at Caltech, has been named the 2024 John Stewart Bell Prize recipient. The prize honors John’s contributions in … Continue re … | Continue reading


@quantumfrontiers.com | 2 months ago

The rain in Portugal

My husband taught me how to pronounce the name of the city where I’d be presenting a talk late last July: Aveiro, Portugal. Having studied Spanish, I pronounced the name as Ah-VEH-roh, with a v partway to a hard b. … Continue reading → | Continue reading


@quantumfrontiers.com | 2 months ago

Discoveries at the Dibner

This past summer, our quantum thermodynamics research group had the wonderful opportunity to visit the Dibner Rare Book Library in D.C. Located in a small corner of the Smithsonian National Museum of American History, tucked away behind flashier exhibits, the Dibner is … Continue … | Continue reading


@quantumfrontiers.com | 3 months ago

“Once Upon a Time”…with a twist

Thermodynamics problems have surprisingly many similarities with fairy tales. For example, most of them begin with a familiar opening. In thermodynamics, the phrase “Consider an isolated box of particles” serves a similar purpose to “Once upon a time” in fairy … Continue reading … | Continue reading


@quantumfrontiers.com | 3 months ago

Colliding the familiar and the anti-familiar at CERN

The most ingenious invention to surprise me at CERN was a box of chocolates. CERN is a multinational particle-physics collaboration. Based in Geneva, CERN is famous for having “the world’s largest and most powerful accelerator,” according to its website. So … Continue reading → | Continue reading


@quantumfrontiers.com | 3 months ago

What geckos have to do with quantum computing

When my brother and I were little, we sometimes played video games on weekend mornings, before our parents woke up. We owned a 3DO console, which ran the game Gex. Gex is named after its main character, a gecko. Stepping … Continue reading → | Continue reading


@quantumfrontiers.com | 4 months ago

Quantum Encryption in a Box

Over the last few decades, transistor density has become so high that classical computers have run into problems with some of the quirks of quantum mechanics. Quantum computers, on the other hand, … | Continue reading


@quantumfrontiers.com | 1 year ago

The power of being able to say “I can explain that”

Caltech condensed-matter theorist Gil Refael explained his scientific raison d’trê early in my grad-school career: “What really gets me going is seeing a plot [of experimental data] and being able … | Continue reading


@quantumfrontiers.com | 2 years ago

If the (quantum-metrology) key fits

My maternal grandfather gave me an antique key when I was in middle school. I loved the workmanship: The handle consisted of intertwined loops. I loved the key’s gold color and how the key weighed … | Continue reading


@quantumfrontiers.com | 3 years ago

Eleven risks of marrying a quantum information scientist

Some of you may have wondered whether I have a life. I do. He’s a computer scientist, and we got married earlier this month.  Marrying a quantum information scientist comes with dangers not adverti… | Continue reading


@quantumfrontiers.com | 3 years ago

Sultana: A Girl Who Refused to Stop Learning

Caltech attracts some truly unique individuals from all across the globe with a passion for figuring things out. But there was one young woman on campus this past summer whose journey towards scien… | Continue reading


@quantumfrontiers.com | 4 years ago

Quantum Conflict Resolution

If only my coauthors and I had quarreled. I was working with Tony Bartolotta, a PhD student in theoretical physics at Caltech, and Jason Pollack, a postdoc in cosmology at the University of British… | Continue reading


@quantumfrontiers.com | 4 years ago

A New Game: Quantum TiqTaqToe

A passing conversation with my supervisor Video games have been a part of my life for about as long as I can remember. From Paperboy and The Last Ninja on the Commodore 64 when I was barely old eno… | Continue reading


@quantumfrontiers.com | 4 years ago

Mind

I suppose most theoretical physicists who (like me) are comfortably past the age of 60 worry about their susceptibility to “crazy-old-guy syndrome.” (Sorry for the sexism, but all the victims of th… | Continue reading


@quantumfrontiers.com | 4 years ago

Quantum Information in Quantum Cognition

Some research topics, says conventional wisdom, a physics PhD student shouldn’t touch with an iron-tipped medieval lance: sinkholes in the foundations of quantum theory. Problems so hard, you’d hav… | Continue reading


@quantumfrontiers.com | 4 years ago

The Complexity of Mosaics

This post follows, more or less, the content of a talk I gave at the BBVA Fundation in Madrid in April 2019. You can see the video (in Spanish, with English captions provided by YouTube’s Aut… | Continue reading


@quantumfrontiers.com | 5 years ago

Quantum Information Meets Quantum Matter

Two things you should know about me are: (1) I have unbounded admiration for scientists who can actually finish writing a book, and (2) I’m a firm believer that exciting progress can be ignit… | Continue reading


@quantumfrontiers.com | 5 years ago

Symmetries and Quantum Error Correction

It’s always exciting when you can bridge two different physical concepts that seem to have nothing in common—and it’s even more thrilling when the results have as broad a range of possible fields o… | Continue reading


@quantumfrontiers.com | 5 years ago