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“In collaboration with researchers at Caltech, the group is planning tabletop experiments to test the practicality of the idea, and then plans to use larger vacuum tubes such as those at LIGO to work on how to align the lenses and stabilize the photon beams over long distances.”

Ji2025: [Copper-impurity-free photonic integrated circuits enable deterministic soliton microcombs](arxiv.org/abs/2504.18195)

Amir Safavi-Naeini outside five sigma Nice blog post on free energy! I teach it similarly in my statistical mechanics of learning course. Also there is a nice connection to info theory: KL divergence between p and the Boltzmann distribution is the (free energy of p - free energy of Boltzmann)/kT

Many recent posts on free energy. Here is a summary from my class “Statistical mechanics of learning and computation” on the many relations between free energy, KL divergence, large deviation theory, entropy, Boltzmann distribution, cumulants, Legendre duality, saddle points,

I have a thread for how people hold their fiber / package their photonics chips. Maybe I should also start one for how people package their superconducting circuit chips.

signüll jmlr.org/papers/volume3…

we are bringing back the lenses!

My Les Houches lecture notes quantum-noise.ghost.io/les-houches-le…

Even if you don't care one bit about scientific research, it's important to recognise the value of publicly funding people working on very hard problems and training bright young minds on how to solve them. Do you think it’s a coincidence that so many successful entrepreneurs

Cool! :D

you were scrolling down the pdf and it got choppy, thats when you know you got a nice high res image coming up. - Qi2025: [Low-loss, fabrication-tolerant, and highly-tunable Sagnac loop reflectors and Fabry-Pérot cavities on thin-film lithium niobate](arxiv.org/abs/2505.23411)

Michael Roukes kicking off #FNS2025, going back 30 years to the beginning of NEMs. (explaining this paper arxiv.org/abs/2505.04574 which was then rejected by APL!)

Sad. science.org/doi/10.1126/sc…

Raymond Laflamme 1960-2025. A great scientist, renowned for his pioneering contributions to quantum error correction. A great leader, founding director of Institute for Quantum Computing (IQC). A great colleague and teacher whose legacy continues to inspire us. uwaterloo.ca/institute-for-…

A great Quanta Magazine article on our theory of creativity in convolutional diffusion models lead by Mason Kamb. See also our paper with new results in version 2: arxiv.org/abs/2412.20292 to be presented as an oral at ICML Conference #icml25 thx Webb Wright !