.Condensed Matter Events
Spring 2023
Classical dynamics of the multi-terminal Josephson junctions.
Speaker: Gleb Finkelstein ( Duke University)
In multi-terminal Josephson junctions (MTJJ), several superconducting contacts are made to a common non-superconducting region. As a result, the state of a MTJJ is dependent on superconducting phase differences between several pairs of contacts. This 2\pi periodic dependence on several variables is reminiscent of the Bloch bands in a crystal, [...]
Nonequilibrium transport and thermalization in strongly disordered 2D electron systems
Speaker: Dragana Popovic (Florida State University)Host: Ar. Abanov
Understanding the dynamics of isolated disordered systems and its dependence on the range of interactions has been attracting a lot of research attention in recent years, but many questions remain open, especially in two spatial dimensions. At the same time, experiments have been limited mostly to those on synthetic quantum [...]
Analog quantum simulations with trapped-ion spin chains.
Speaker: Guido Pagano (Rice University)Host: Ar. Abanov
Laser cooled trapped ions offer unprecedented control over both internal and external degrees of freedom at the single-particle level. They are considered among the foremost candidates for realizing quantum simulation and computation platforms that can outperform classical computers in specific tasks. In this talk I will show how linear arrays [...]
Quantum Sensing of Quantum Materials
Speaker: Chunhui Du (UCSD)Host: Joaquin Rodriguez Nieva
Exploring new class of quantum materials with advanced magnetic and electronic properties has been a central focus of modern condensed matter physics over the past decades. The success of these efforts relies simultaneously on advances in theory, material synthesis, and development of new, sensitive metrology tools capable of diagnosing the [...]
‘Dirty’ Quantum Magnets
Speaker: Itamar Kimchi (Georgia Tech)Host: Ar. Abanov
Studying quantum entanglement over the past decade has allowed us to make remarkable theoretical progress in understanding correlated many-body quantum systems. However in real materials electrons experience spatially random heterogeneities ("dirt") whose theoretical treatment, including strong correlations, has been a challenge. I will describe how synthesizing ideas from quantum information theory, statistical mechanics, and quantum field theory gives [...]
Tailoring quantum materials properties by ultrafast laser driving of collective modes
Speaker: Edoardo Baldini (UT Austin)Host: Ar. Abanov
The ability to precisely tune quantum material properties at ultrafast (i.e., sub-picosecond) timescales is key to opening new routes toward high-speed optoelectronic, spintronic, and quantum devices. Ultrashort laser pulses have the potential to engineer various interactions at the meso- and nano-scale, steer phase transitions along preferential pathways, and coherently control [...]
Adiabatic Oracle for quantum algorithms.
Speaker: Nikolai Sinitsyn (LANL)Host: V. Pokrovsky
Quantum algorithms, such as by Shor and Grover, rely on the concept of an oracle, which is a quantum function that can be called by a computer in one computation step. In real applications this function is not given for free. It must be generated as a quantum dynamic process. [...]
Critical Phenomena in Quantum Many-body Systems Far from Equilibrium
Speaker: Mohammad Faghfoor Maghrebi (Michigan State University)Host: Joaquin Rodriguez Nieva
With recent experimental advances, we have entered a new era where quantum matter can be probed far from equilibrium. Yet, non-equilibrium many-body quantum systems are not anywhere as well understood as their equilibrium counterparts. In this talk, I will discuss a generic non-equilibrium setting where many-body quantum systems evolve upon [...]
Correlations and topology in the magic angle twisted bilayer graphene.
Speaker: Oskar Vafek (National High Magnetic Field Laboratory)Host: Ar. Abanov
In the first part of the talk I will present a two-stage renormalization group treatment [1] of the minimal continuum model for magic angle twisted bilayer graphene with Coulomb electron-electron interactions. This approach connects the physics at length scales shorter than the moire superlattice period to the Hamiltonian for the active narrow [...]
Postmodern kinetics. (Special Date and Time)
Speaker: Gregory Falkovich (Weizmann)Host: A. Finkelstein
Classical period have seen the derivation of kinetic equations by Boltzmann, Peierls and others, who also obtained their equilibrium and weakly non-equilibrium solutions. Modern kinetics appeared around 50 years ago when it was discovered that higher-order terms beyond the kinetic equations diverge at non-equilibrium. Those divergences were identified as memory [...]