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Mathey_group @MatheyGroup
Joined September 2024
  • Tweets 66
  • Following 38
  • Followers 12
30 Photos and videos
Here is our tutorial-like retrospective of time crystals, a form of quantum matter in motion: arxiv.org/abs/2605.23881 It's been a fun ride, written with Jayson, on our long-time collaboration with Andreas and his team. Time crystals, three ways, enjoy!
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Mathey_group retweeted
Physical Review A@PhysRevA
Jun 5
Editors' suggestion: Universal quantum melting of quasiperiodic attractors in driven-dissipative cavities @MatheyGroup #OpenAccess go.aps.org/4ebv63T
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Mathey_group retweeted
Charles W. Clark
@g8ge
Apr 21
Atomic Josephson parametric amplifier journals.aps.org/prresearch/… #atomtronics @NIST @JQInews @JILAscience
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Superconductivity continues to be a focal point of research, from fundamentals to qubits. The U(1) lattice gauge system is one of these iconic models, here is our take on the phase transition: arxiv.org/abs/2603.09895 , where we clarified the critical behavior. Great work, Greta!
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To develop quantum technologies we need new numerical methods, here is our latest: arxiv.org/abs/2603.04066 . It uses quantum jumps in the quantum technology-relevant regime, nicely developed by Marcus. You can pair it with any dynamics method, get in touch if you'd like to try.
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How to make a topological superfluid in a driven cavity, and get a first-order phase transition in the process: arxiv.org/abs/2603.03034 . It's been fun figuring this out with Hannah, thanks to her work and dedication!
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Mathey_group retweeted
CUI: Advanced Imaging of Matter@cui_unihh
Jan 8
📢New publication on "Realizing an atomic quantum interference device in a rotating-box potential" by CUI member L. Mathey @unihh @TIIuae @PhysRevLett @MatheyGroup journals.aps.org/prresearch/…

Realizing an atomic quantum interference device in a rotating-box potential

Atomtronic devices are matter-wave circuits designed to emulate the functional behavior of their electronic counterparts. Motivated by superconducting quantum interference devices (SQUIDs), atomic...

journals.aps.org
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Great article by Andrea on our Shapiro steps: Physics - Stepwise Quantum Tunneling Seen in Ultracold Atoms physics.aps.org/articles/v18…

Stepwise Quantum Tunneling Seen in Ultracold Atoms

Trapped atoms exhibit discrete step-like behavior across a barrier, mimicking the quantum tunneling behavior in superconducting circuits.

physics.aps.org
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Excited to have our study on Shapiro steps out: Observation of Shapiro steps in an ultracold atomic Josephson junction | Science science.org/doi/10.1126/scie…

Observation of Shapiro steps in an ultracold atomic Josephson junction

The current-voltage characteristic of a driven superconducting Josephson junction displays discrete steps. This phenomenon, called the Shapiro steps, forms today’s voltage standard. In this work, we...

science.org
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Designing material properties by putting them into a cavity is promising route of material design. Recent study with Hector on cavity control of Raman-active matter: arxiv.org/abs/2511.08586
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Making vortex rings in a condensate, via Shapiro dynamics: arxiv.org/abs/2511.05645 , joint study with Vijay, Luigi, and Herwig. Looks a little like smoke rings!
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Dial up the tunneling, between two Bose-Einstein condensates, and see the phases order! Recently demonstrated in collaboration with Chris' team and Vijay, here: arxiv.org/abs/2510.23600
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A new platform to push next-gen electronics towards quantum coherence, patterned graphene nanoribbons: arxiv.org/abs/2510.08678 . Patterned electrodes provide control of the band structure to enable coherent electronics. Riek and Hector, this was fun!
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Tunneling is one of these quintessential, unintuitive quantum phenomena: particles overcoming barriers that they don't have the energy for, from a classical perspective. With Herwig and his team, and with Vijay and Luigi, we took a closer look, see here: arxiv.org/abs/2509.03591
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Mathey_group retweeted
CUI: Advanced Imaging of Matter@cui_unihh
4 Sep 2025
📣New publication by CUI member L. Mathey et al. on "Observation of a bilayer superfluid with interlayer coherence" nature.com/articles/s41467-0… @MatheyGroup @NatureComms
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Mathey_group retweeted
Oxford Ultracold@ox_ultracold
2 Sep 2025
Our latest work is out in Nat. Commun! We report the first observation of tunnelling-assisted superfluidity in bilayer 2D quantum gases - a robust platform for quantum simulation, from superconductors to QCD. Great collaboration with @unihh & @TIIuae. nature.com/articles/s41467-0…
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Atomtronics is the scientific endeavor of building circuits out of quantum liquids. Here, we give the field a new twist, via rotating-box potentials: arxiv.org/abs/2508.17889 Thanks to Kaspar and Vijay, for making this fun project a reality!
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Mathey_group retweeted
CUI: Advanced Imaging of Matter@cui_unihh
14 May 2025
📣New publication on "Detecting Phase Coherence of 2D Bose Gases via Noise Correlations" by i.a. CUI member L. Mathey 👉journals.aps.org/prl/abstrac… @unihh @APSphysics

Detecting Phase Coherence of 2D Bose Gases via Noise Correlations

We measure the noise correlations of two-dimensional (2D) Bose gases after free expansion and use them to characterize the in situ phase coherence across the Berezinskii-Kosterlitz-Thouless (BKT)...

journals.aps.org
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Mathey_group retweeted
CUI: Advanced Imaging of Matter@cui_unihh
5 Jun 2025
📢New publication on "Torus Bifurcation of a Dissipative Time Crystal" by CUI members L. Mathey and A. Hemmerichet al. 👉journals.aps.org/prl/abstrac… @PhysRevLett @Official_UPD @UniKonstanz

Torus Bifurcation of a Dissipative Time Crystal

Using a quantum gas setup consisting of a Bose-Einstein condensate strongly coupled to a high-finesse optical cavity by a transverse pump laser, we experimentally observe an instability of a dissip...

journals.aps.org
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Mathey_group retweeted
CUI: Advanced Imaging of Matter@cui_unihh
7 Jul 2025
📢New publication on "Non-linear photoconductivity of strongly driven graphene" by CUI member L. Mathey and L. Broers scipost.org/SciPostPhys.18.6… #SciPost #graphene
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