Seminar - Peter Litttlewood - Dynamical phase transitions at many body exceptional point Zoom Link: https://kth-se.zoom.us/j/67773156040 Zoom ID: 677 7315 6040 Date: Tuesday Dec 8 Time: 4pm Stockholm time Abstract: Michel Fruchart, Ryo Hanai, Peter Littlewood, and Vincenzo Vitelli Spontaneous synchronization is at the core of many natural phenomena. Your heartbeat is maintained because cells […]
DQMM 2020 - Virtual Conference from Jacksonville, Florida, USA Hosted by UNF, UCONN, and NORDITA Dynamic Quantum Matter and Materials December 14th – 16th, 2020 Quantum matter and materials, like […]
Internal group meeting
Examining multi-band effects on the electronic compressibility of a 2D electron gas: Insights into the negative compressibility of LAO/STO In this study, we investigate the consequences of two electronic bands at the negative electronic compressibility (NEC) cross-over point for a two-dimensional electron gas (2DEG) using a simple homogeneous model with Coulombic interactions and first-order multi-band […]
Internal Group Meeting
Beyond BCS: An Exact Model for Superconductivity and MottnessHigh-temperature superconductivity in the cuprates remains an unsolved problem because the cuprates start off their lives as Mott insulators in which no organizing principle such a Fermi surface can be invoked to treat the electron interactions. Consequently, it would be advantageous to solve even a toy model […]
Spectral bulk-boundary correspondence of odd-frequency Cooper pairs Surface physics dominated by the bulk properties is attracting much attention. For example, bulk-boundary correspondence predicts topological surface states. Another important context where surface properties are determined by the bulk is the electric polarization: surface electric charge is the bulk property modulo a quantum . This fact might […]
Direct detection of odd-frequency superconductivity Odd-frequency superconductivity is a dynamical phenomenon. The time-dependence of the anomalous Green function matters. Therefore, a dynamical response is needed to directly detect odd-frequency superconductivity. We propose a novel type of detection scheme based on two-pulse, time-resolved ARPES noise measurements. Remarkably, the experimental response is directly proportional to the anomalous […]
Kekule spiral order in twisted bilayer graphene Twisted bilayer graphene has attracted a lot of attention due to the presence of correlated insulators proximate to superconductivity. In this talk I will present a new proposal for the nature of the correlated insulators. This order, which we dub the 'incommensurate Kekule spiral' (IKS) order, spontaneously breaks […]
Searches for dark matter and exotic astrophysics with networks of quantum sensors. As precision quantum sensors become ubiquitous, it is natural to combine them into networks. I will focus on searches for exotic physics signals with networks of quantum sensors. Most of my work is related to atomic clocks and I will give a general […]
June 6 (arrival day) - 10, 2023 At Albano campus, House 2, Auditorium 4 (Albanovägen 16, 114 19 Stockholm) - canteen Proviant building, 2 floors down (see the Campus map […]
Workshop Overview: The arrival of quantum technologies is set to reshape the information age. Materials, especially those tailored with specific properties, are paramount for ushering in these novel advancements. Development, […]