Quantum Tinkerer
@QuantumTinkerer
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Just a research group tinkerin' with quantum devices
Delft, Netherlands
Joined January 2019
RT @JohannaZijd: No PhD project is truly finished without corresponding celebratory cake. Here's an artistic impression of the mean-fieldโฆ.
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And the amazing thing is. MeanFi interfaces with our favorite tight-binding Python package: Kwant! You can use Kwant to define your system and analyze the groundstate solution. โจ.
kwant-project.org
kwant-workflow.svgz Kwant is a free (open source), powerful, and easy to use Python package for numerical calculations on tight-binding models with a strong focus on quantum transport. Recent blog p
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The workflow is easy-peasy-lemon-squeezy: ๐.1. Define your tight-binding system .2. Define your density-density interaction.3. Make a guess and run the solver to get the groundstate.4. Look at all your broken symmetries!
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Theorists have been using self-consistent mean-field calculations to deal with interacting systems for ages and ages. We were missing an extensible code to do this for our research. ๐ค. ๐กSolution! Write an open-source package that performs Hartree-Fock on tight-binding systems!.
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๐ชฉ NEW PYTHON PACKAGE ALERT! ๐ชฉ. Do you fill one of the boxes below?.โ
Interested in interacting systems. โ
Kwant user. โ
Python enthusiast. Then check โจMeanโฉFi! Our new Python-based Hartree-Fock solver. Read more!๐งต
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RT @A_Mert_Bozkurt: Wanna learn how to make parafermions with only 3 quantum dots?. Before you check out the details in our latest preprintโฆ.
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RT @AntonioManesco: ๐จ ALERT TO THE GRAPHENE COMMUNITY ๐จ. Do you know how to measure valley polarization in transport experiments?. With @juโฆ.
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But what about the cake?. That's an artist's impression of the calendar activity in the git repository!. Now go check it out!.
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The manuscript explaining the algorithm behind our Python package for perturbation theory, aka Pymablock, is out!.
arxiv.org
A common technique in the study of complex quantum-mechanical systems is to reduce the number of degrees of freedom in the Hamiltonian by using quasi-degenerate perturbation theory. While the...
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๐จPreprint alert!๐จ. Can you guess the relationship between this celebratory cake and the latest @QuantumTinkerer preprint on perturbation theory?. Answer and link ๐
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#DPG2024 is about to start!. Want to check what we are presenting? Check out the thread that @A_Mert_Bozkurt prepared with all @QuantumTinkerer's talks!.
Looking forward to be at #DPG2024 in Berlin next week! My talk is (same as last year) on Monday at 09:30 and it is about how to make your favorite Josephson junction. You can find the details here:
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Coming Tuesday (27/02) at 15:00 UTC Kostas Vilkelis will present our recent manuscript "Chiral adiabatic transmission protected by Fermi surface topology" at the @VirtualSciForum. Don't forget to sign up!.
Last week our CAT meowed on arxiv ๐ธ We discovered that particles turn clockwise without scattering into each other at junctions of 3 superconductors. That ๐๐ฉ๐ช๐ณ๐ข๐ญ ๐๐ฅ๐ช๐ข๐ฃ๐ข๐ต๐ช๐ค ๐๐ณ๐ข๐ฏ๐ด๐ฎ๐ช๐ด๐ด๐ช๐ฐ๐ฏ is as if three rivers flowed through each other at a meeting point.
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BTW, this is @JohannaZijd's first manuscript!. We celebrated all these pretty figures with a cake of Fig 8a.
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If you want to learn more about these quantum scars in Majoranas and the appearance of caustics, another cool concept from semiclassical physics, go and check our preprint! .
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What if there is an obstacle in the middle of the table? Does the Majorana ball notice it?. YES!
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Why? Because Majoranas live on the edge. However! The Majorana ball still moves as if it were a classical ball: see here our Majorana scars!
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In a regular billiard we know exactly how a normal ball bounces around, but what if we make the whole billiard table a topological superconductor: Majorana billiards? . The challenge is that the Majorana 'ball' disappears in the middle of the table, and appears at the other end.
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How good are you at billards? What if we make it as quantum as it can get?. Rather than a Christmas gift, Quantum Tinkerers bring you a challenge for the holidays. Play Majorana billards! ๐.
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And we have a new winner! The elected Quantum Tinkerer Coolest Plot of November is:. ๐ฅ๐ฅ๐ฅ. ๐ "Sauron" by @juandaanieel ๐
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