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Faster Than a Speeding Photon: “Measurement of the neutrino velocity with the...
There have been a lot of pixels spilled over this faster-than-light neutrino business, so it might not seem like something I should take time away from pressing work to write up. It is the story of the...
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Shedding Light on Quantum Gravity: “Probing Planck-scale physics with quantum...
It’s been a while since I did any ResearchBlogging posts, because it turns out that having an infant and a toddler really cuts into your blogging time. Who knew? I keep meaning to get back to it,...
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Treating Big Molecules Like Electrons: “Real-time single-molecule imaging of...
Richard Feyman famously once said that the double-slit experiment done with electrons contains everything that’s “‘at the heart of quantum physics.” It shows both particle and wave character very...
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Clock Synchronization Done Right: “A 920-Kilometer Optical Fiber Link for...
I’ve been busily working on something new, but I’m beginning to think I’ve been letting the perfect be the enemy of the good-enough-for-this-stage, so I’m setting it aside for a bit, and trying to get...
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Entangled In the Past: “Experimental delayed-choice entanglement swapping”
Enough slagging of beloved popularizers– how about some hard-core physics. The second of three extremely cool papers published last week is this Nature Physics paper from the Zeilinger group in Vienna,...
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Single Photons Are Still Photons: “Wave-particle dualism and complementarity...
In which we do a little ResearchBlogging, taking a look at a slightly confusing paper putting a new twist on the double-slit experiment. ———— I’m off to California this afternoon, spending the rest of...
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The Towering Interferometer: “Testing General Relativity with Atom...
In which we look at a slightly crazy-sounding proposal from my former boss, the experimental realization of which is getting close to completion. ———— I spent more or less the entire first day of DAMOP...
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Simulating Wires with Atoms and Light: “Conduction of Ultracold Fermions...
So, it’s been a while, but let’s see if we can’t hit the ground running with a good physics post. There have been a few notable physics events since I went on hiatus, but for a return to physics...
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Entangled in the Past: “Entanglement Between Photons that have Never Coexisted”
In which we do a little ResearchBlogging to look at a new paper about weird quantum effects, entangling two photons that never both exist at the same time. ———— I’m teaching full-time this term, but...
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Using Light to Put a Mirror in the Dark: “Optomechanical Dark Mode”
In which I unpack a cryptic paper title and explain how quantum superposition lets you use light to keep things from interacting with light. ————- I joined AAAS a couple of years ago to get a break on...
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What Does “Negative Temperature” Mean, Anyway?
The most talked-about physics paper last week was probably Negative Absolute Temperature for Motional Degrees of Freedom (that link goes to the paywalled journal; there’s also a free arxiv preprint...
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How Do You Make Negative Temperatures, Anyway?
Last week’s post talked about the general idea of negative temperature, with reference to this much-talked-about Science paper (which also comes in a free arxiv version from which the figures used here...
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Homework Is Evil?: “The benefits of completing homework for students with...
One of the perennial problems of teaching intro physics is getting students to do their homework, so I was very interested to see Andy Rundquist on Twitter post a link to a paper on the arxiv titled...
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Few-Body Systems: Cooler Than You Might Think
Hey, dude? Yeah, what’s up? I’m not normally the one who initiates this, but I was wondering: When you were at DAMOP last week, did you see any really neat physics? Oh, sure, tons of stuff. It was a...
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Atom by Atom Interaction: “Direct Measurement of the van der Waals...
I’m always a little ambivalent about writing up papers that have also been written up in Physics: on the one hand, they make a free PDF of the paper available, which allows me to reproduce figures...
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My Claim to Scientific Fame: “Squeezed States in a Bose-Einstein Condensate”
In Monday’s post on squeezed states, I mentioned that I really liked the question because I had done work on the subject. This is, in fact, my claim to scientific fame (well, before the...
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The Making of “Squeezed States in a Bose-Einstein Condensate”
Yesterday’s write-up of my Science paper ended with a vague promise to deal some inside information about the experiment. So, here are some anecdotes that you would need to have been at Yale in...
View ArticleTools of the Cold-Atom Trade: Introduction
I have a small collection of recent research papers that I’d like to write up open in various browser tabs and suchlike, but many of these would benefit from having some relatively clear and compact...
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Point Sources and Towers: “Multiaxis Inertial Sensing with Long-Time Point...
A little over a year ago, I visited Mark Kasevich’s labs at Stanford, and wrote up a paper proposing to use a 10-m atom interferometer to test general relativity. Now, that sounds crazy, but I saw the...
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Interference with 10,000-Particle “Particles”: “Matter-wave interference with...
I’m teaching Quantum Optics this term, and one of my students picked “Atom Optics” off the list of suggested paper topics. When he asked for pointers, I said “You should check out the diffraction...
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