Triangle Toot Party!

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QUINTO projectAtom arraysScientists have developed ways of trapping atoms and arranging them in space using laser beams (such as “optical tweezers” and “optical lattices”). What can one do using these tools? One possibility is arranging the atoms in a regular array. Why people find it interesting? It was found that such systems have properties much different than clouds of atoms randomly flying around. The lattice structure changes how the atoms emit and absorb light. This is because light emitted from different atoms can interfere, and a regular structure of array works like a diffraction grating. This happens especially if the distance between atoms is smaller than one wavelength.For example, a 1D chain of atoms in a certain state emits light only on its ends. And a 2D array can act as a perfect mirror (for certain wavelength), even though it is only one atom thin.It was theoretically shown that these effects can be used to boost the efficiency of optical quantum devices such as memories and gates, which may be used in the future for a “quantum internet” and quantum computers. <a href="https://fediscience.org/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://fediscience.org/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a> <a href="https://fediscience.org/tags/Quantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quantum</a> <a href="https://fediscience.org/tags/QuantumOptics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumOptics</a> <a href="https://fediscience.org/tags/atoms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#atoms</a> <a href="https://fediscience.org/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> <a href="https://fediscience.org/tags/CondMat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondMat</a> [1/2]

QUINTO projectYesterday Charlie-Ray Mann gave a talk as a part of the "Many-Body Quantum Optics" program at KITP. Charlie is a postdoc working in the same group as me. Part of presented work (2D numerics which is not directly referenced) was done by me within the QUINTO project. You can listen to the recording of the talk here: <a href="https://online.kitp.ucsb.edu/online/mbqoptics24/mann/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://online.kitp.ucsb.edu/online/mbqoptics24/mann/</a><a href="https://fediscience.org/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> <a href="https://fediscience.org/tags/condMat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#condMat</a> <a href="https://fediscience.org/tags/Cond_mat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cond_mat</a> <a href="https://fediscience.org/tags/TopologicalOrder" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TopologicalOrder</a> <a href="https://fediscience.org/tags/SpinLiquid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SpinLiquid</a> <a href="https://fediscience.org/tags/QuantumOptics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumOptics</a> <a href="https://fediscience.org/tags/Optics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Optics</a> <a href="https://fediscience.org/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://fediscience.org/tags/ColdAtoms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ColdAtoms</a> <a href="https://fediscience.org/tags/Science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Science</a>

QUINTO projectSpin liquidAs an example of how a topological order can look like, one can look at simplified picture of so-called Z2 spin liquid. This type of topological order is postulated to occur in some “frustrated magnets”. <a href="https://fediscience.org/tags/physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#physics</a> <a href="https://fediscience.org/tags/TopologicalOrder" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TopologicalOrder</a> <a href="https://fediscience.org/tags/science" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#science</a> <a href="https://fediscience.org/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> <a href="https://fediscience.org/tags/CondMat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondMat</a> [1/6]

QUINTO projectHi! We are conducting a research project on the intersection of quantum optics and condensed matter. We study what happens if an ordered array of atoms absorbs many photons, thus becoming a complex system of many interacting particles. We want to find and exploit analogies between such systems and so-called topological orders, and build a “bridge” between the two fields of physics. <a href="https://fediscience.org/tags/introduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#introduction</a> <a href="https://fediscience.org/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://fediscience.org/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> <a href="https://fediscience.org/tags/CondMat" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondMat</a> <a href="https://fediscience.org/tags/QuantumOptics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumOptics</a> <a href="https://fediscience.org/tags/TopologicalOrder" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TopologicalOrder</a> <a href="https://fediscience.org/tags/ManyBody" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ManyBody</a> <a href="https://fediscience.org/tags/ColdAtoms" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ColdAtoms</a> [1/2]

Karthik SrinivasanWow!! What a breathe of fresh air this paper is in the midst of suffocating levels of "AI solves everything" hype cycle. <a href="https://arxiv.org/abs/2303.10798" rel="nofollow noopener noreferrer" target="_blank">https://arxiv.org/abs/2303.10798</a>They have found at long last, a single tile, an "einstein", which they call a "hat"/polykite that tiles the entire plane aperiodically. Previously the best known aperiodic tiling of the plane required at the least two different tiles, the most famous ones being the Penrose tiles, and those that adorn Alhambra. It is all the more wonderful that the first two authors don't have any academic/research affiliations. They write somewhere in the paper, how it all started, so wonderful: "One of the authors (Smith) began investigating the hat polykite as part of his open-ended visual exploration of shapes and their tiling properties. Working largely by hand, with the assistance of Scherphuis’s PolyForm Puzzle Solver software (<a href="http://www.jaapsch.net/puzzles/polysolver.htm" rel="nofollow noopener noreferrer" target="_blank">www.jaapsch.net/puzzles/polysolver.htm</a>), he could find no obvious barriers to the construction of large patches, and yet no clear cluster of tiles that filled the plane periodically." Why is the study of tilings such a big deal? Well, it hints at and tries to formalize various physics concepts that are of immense interest to many of us (and dare I say, even neuroscientists): quasi crystals!, possible new states of matter, emergent structures from simple units, how symmetries and asymmetries arise, stability of heterogenous media, soft matter physics, order without periodicity, criticality etc., etc., On quasi-crystals and their search, applications, uses etc., I recommend the wonderful Paul Steinhardt's book: "The Second Kind of Impossible: The Extraordinary Quest for a New Form of Matter" <a href="https://neuromatch.social/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a> <a href="https://neuromatch.social/tags/Maths" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Maths</a> <a href="https://neuromatch.social/tags/Combinatorics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Combinatorics</a> <a href="https://neuromatch.social/tags/AperiodicTiling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AperiodicTiling</a> <a href="https://neuromatch.social/tags/PenroseTiles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PenroseTiles</a> <a href="https://neuromatch.social/tags/Einstein" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Einstein</a> <a href="https://neuromatch.social/tags/Emergence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Emergence</a> <a href="https://neuromatch.social/tags/condensedmatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#condensedmatter</a>

Steven Thomson[New server, new <a href="https://sciencemastodon.com/tags/introduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#introduction</a>, this time with hashtags!]Hello! I'm a <a href="https://sciencemastodon.com/tags/TheoreticalPhysicist" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TheoreticalPhysicist</a> working in <a href="https://sciencemastodon.com/tags/Quantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Quantum</a> <a href="https://sciencemastodon.com/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> <a href="https://sciencemastodon.com/tags/Physics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Physics</a>, currently a <a href="https://sciencemastodon.com/tags/MarieSklodowskaCurie" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MarieSklodowskaCurie</a> Fellow at FU Berlin. I'm interested in how <a href="https://sciencemastodon.com/tags/disorder" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#disorder</a> affects quantum systems, and how we can use it to stabilise exotic phases of matter.More info: <a href="http://www.steventhomson.co.uk" rel="nofollow noopener noreferrer" target="_blank">http://www.steventhomson.co.uk</a>I also host the <a href="https://qoto.org/@insidequantum" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@insidequantum</a> <a href="https://sciencemastodon.com/tags/podcast" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#podcast</a> where I talk to the people behind the latest developments in <a href="https://sciencemastodon.com/tags/QuantumTechnology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumTechnology</a>. Please check it out!

|Ðr⟩⊕|JθΣħμαħ⟩⊗|Hεατħ⟩I don't think I've given a proper <a href="https://mathstodon.xyz/tags/introduction" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#introduction</a> yet, so here's mine. I'm a postdoc at <a href="https://mathstodon.xyz/tags/Dartmouth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Dartmouth</a> College, where I am working on bosonic analogs of condensed matter systems and strongly correlated electron systems. I graduated with a Ph.D. in 2021 from <a href="https://mathstodon.xyz/tags/BostonCollege" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#BostonCollege</a>, where I worked under Prof. Kevin Bedell on <a href="https://mathstodon.xyz/tags/CondensedMatter" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CondensedMatter</a> theory, with a focus on <a href="https://mathstodon.xyz/tags/FermiLiquid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FermiLiquid</a> theory. My main interests are <a href="https://mathstodon.xyz/tags/QuantumFluids" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumFluids</a>, unconventional <a href="https://mathstodon.xyz/tags/Superconductors" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Superconductors</a>, <a href="https://mathstodon.xyz/tags/FrustratedMagnetism" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#FrustratedMagnetism</a>, and <a href="https://mathstodon.xyz/tags/QuantumHall" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumHall</a> physics.

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