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ifanghughes.bsky.social
Physicist interested in: Quantum mechanics; atoms, lasers and big magnets; data analysis. Author of Opticsf2f and Measurements and their Uncertainties. Cymro oddi cartre.
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This week's Fourier Optics course features coherence (temporal and spatial). My favourite image (@etotheipiequals.bsky.social) to illustrate these concepts is Young's double slits with white light. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 10 hours ago • 3 comments

This week's Fourier Optics course features time-dependent optical phenomena: slow light & fast light. We exploit the variation of refractive index close to an atomic resonance. From Chapter 7 of #opticsf2f written with colleague @etotheipiequals.bsky.social 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 7 days ago • 2 comments

No, the paper Microsoft published in @nature.com yesterday did not prove the existence a topological qubit — contrary to what you may have read in some other places www.nature.com/articles/d41...

submitted 10 days ago • 3 comments

Greatly enjoyed today's QLM seminar. Interesting physics research results and a fascinating insight into doing research with undergraduate students.

submitted 11 days ago • 0 comments

quantumzeitgeist.com/infleqtion-a...

submitted 11 days ago • 1 comment

Using computer simulations, researchers have found that negative refraction can occur when light passes through a 3D lattice of atoms. The method overcomes typical challenges of achieving the effect. Read the OPN story: bit.ly/4b1TaTX #optics #physics #photonics 💡

submitted 12 days ago • 0 comments

And this is the week we consider high and low pass filtering in the Workshops. Thanks to Adarsh for these wonderful penguin images...

submitted 13 days ago • 1 comment

In this week’s Fourier Optics course we shall be looking at optical phenomena in the time domain. Rather than looking at monochromatic light diffracting at different angles, we consider different colours propagating along the optical axis. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 13 days ago • 1 comment

Here's a neat bit of quantum tech, layering quantum upon quantum. For an ultrasensitive gravimeter, first you make matter waves, then turn them into a Bose Einstein condensate, then entangle them. physics.aps.org/articles/v18...

submitted 19 days ago • 1 comment

On this International Day of Women and Girls in Science, let's take a moment to remember Dorothy Crowfoot Hodgkin, winner of the 1964 Nobel Prize in Chemistry - at the time only the third woman to do so.

submitted 19 days ago • 2 comments

#InternationalDayofWomenandGirlsinScience To celebrate, why not have a look at the European Crystallographic Association's Women in Crystallography video series (youtube.com/playlist?lis...), highlighting some of the experiences, challenges and successes of women in crystallography worldwide.

submitted 19 days ago • 0 comments

‪In this week’s Fourier Optics course we shall be looking at one of the key concepts of Fourier optics – how a lens performs a Fourier transform. The importance of f to f is explained. 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 21 days ago • 1 comment

In this week’s Fourier Optics course we shall be looking at diffraction from 2D apertures. A quiz to test your understanding of the array theorem. Can you match the apertures to their Fraunhofer diffraction patterns? 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 28 days ago • 1 comment

Can only recommend YAO - I had a great time in Lucca, Italy 1997 organised by Patrizia Vignolo & Chiara Menotti!! Many of the people who were there are leading atomic physicists today e.g. @sonjafrankearnold.bsky.social, @ifanghughes.bsky.social, ...

submitted 29 days ago • 0 comments

Delighted to receive my copy of this wonderful book, by @exconsul.bsky.social I'll be applying the Kruskal metric to anything that moves over the next few months. #physics #iTeachPhysics

submitted 30 days ago • 0 comments

Pleser mawr oedd cael traddodi fy narlith "Titrwm tatrwm, cyfrifiadura cwantwm" i Gymdeithas wyddonol cylch Caerdydd. Cyfle i holi os allwn ni ymelwa o annaearoldeb y fecaneg gwantwm. Digon o ddatgyniadau difrifol ond "afresymol"! (Diolch T H Parry-Williams). 🧪 #physics ⚛️ #optics 💡 #iTeachPhysics 🎢

submitted 33 days ago • 0 comments

In this week’s Fourier Optics course we shall be looking at diffraction from 2D apertures, using Fourier methods. Here is a (Cartesian separable) rectangular aperture, and the corresponding Fraunhofer intensity pattern.

submitted 35 days ago • 1 comment