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Next event
June 9 at 16:00 (Kyiv time)
"Saturated Collisional Resistivity in Ultracold Hubbard Metals"
Optical lattices provide clean periodic potentials for ultracold neutral fermions. Without phonons or impurity scattering, finite resistivity arises solely from interactions among itinerant atoms. We investigate this mechanism in a cubic lattice with tunable s-wave interactions and variable temperature. In the strongly interacting metallic regime, we observe a striking saturation of the current relaxation rate towards a value that is independent of the interaction strength. Is this the signature of "lattice unitarity"? By comparison to a resistivity calculation that uses a renormalized two-body scattering matrix, we benchmark a kinetic model of this Hubbard metal and find that the unitary bound is not reached, even in the limit of infinite scattering length.
About the seminar
The host city for the Quantum Seminar is Kharkiv, where we have a number of research institutions and universities with many researchers actively working in the field of quantum science and technology. The aims of the seminar are the following: to bring together Ukrainian and foreign scientists, specialists in Quantum Physics; to sustain motivation and enthusiasm of Ukrainian physicists; to motivate and educate the young generation of Ukrainian students and researchers.
The seminars are scheduled on Tuesdays, two times a month; the default start time is 16:00 (Ukraine time, EET), though sometimes it may differ. The recommended duration for the talk is about 60 mins plus up to 40 mins of Q&A.
Organizers: Sergey N. Shevchenko, B. Verkin ILTPE of NASU, and Andrii G. Sotnikov, NSC KIPT and Karazin University.
Scheduled Seminars
Scheduled Seminars
23.06.2026 Adam Miranowitz (Adam Mickiewicz University, Poznan)
Random Gaussian pure and extremely high-dimensional quantum states
May 26, 2026, Erik Aurell
(KTH – Royal Institute of Technology, Stockholm)
Correlations and information processing – quantum and beyond
May 12, 2026, Paweł Horodecki
(Gdańsk University of Technology)
Shuttling of spin qubits in semiconductors, valleys in silicon, and Landau-Zener transitions
April 28, 2026, Guido Burkard
(University of Konstanz)
Hyperbolic light
April 14, 2026, Alexey Nitikin
(Donostia International Physics Center, Donostia-San Sebastian)
Quantum light sources using colloidal quantum dots
March 31, 2026, Maxym Kovalenko
(ETH Zurich)
Towards quantum enhanced sensing using solid-state spin defects
February 24, 2026, Paul Junghyun Lee
(Korea Institute of Science and Technology, Seoul)
Deciphering the new magnetic state, “B-Phase”, found in MnSi at low temperatures
February 10, 2026, Javier Campo
(University of Zaragoza)
Quantum Annealing Beyond Optimization
January 27, 2026, Mohammad Amin
(D-Wave Quantum Inc. and Simon Fraser University, Burnaby)
What did you do last nanosecond? Experimentally asking photons and atoms about their past.
January 20, 2026, Aephraim Steinberg
(University of Toronto)
Superconducting Diode Effects
December 16, 2025, Alex Levchenko
(University of Wisconsin–Madison)
Quantum thermodynamics in superconducting circuits: interference and thermalization
December 2, 2025, Jukka Pekola
(Aalto University, Espoo)
Galaxies & Black holes
November 25, 2025, Reinhard Genzel
(Max Planck Institute for Extraterrestrial Physics, Garching)
2D tensor networks for quantum simulation
November 11, 2025, Jacek Dziarmaga
(Jagiellonian University, Kraków)
From Attosecond Physics to Infrared Molecular Fingerprinting:
Shaping the Future of Preventive Healthcare
October 21, 2025, Ferenc Krausz
(Ludwig Maximilians University and Max Planck Institute of Quantum Optics, Garching; Center for Molecular Fingerprinting, Budapest)
Thermodynamic Uncertainty Relation in Hybrid Normal-Superconducting Systems: The Role of Superconducting Coherence
October 7, 2025, Michele Governale
(Victoria University of Wellington)
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