1k citations · 3.3k across the 30 of their papers we have counts for
30 papers
Approximation theory for Green's functions via the Lanczos algorithm
Gabriele Pinna, Oliver Lunt, Curt von Keyserlingk
It is known that Green's functions can be expressed as continued fractions; the content at the -th level of the fraction is encoded in a coefficient , which can be recursiv…
Subexponential decay of local correlations from diffusion-limited dephasing
Ewan McCulloch, J. Alexander Jacoby, Curt von Keyserlingk +1
Chaotic quantum systems at finite energy density are expected to act as their own heat baths, rapidly dephasing local quantum superpositions. We argue that in fact this dephasing i…
Finite-temperature quantum topological order in three dimensions
Shu-Tong Zhou, Meng Cheng, Tibor Rakovszky +2
We identify a three-dimensional system that exhibits long-range entanglement at sufficiently small but nonzero temperature--it therefore constitutes a quantum topological order at…
Diffusive entanglement growth in a monitored harmonic chain
Thomas Young, Dimitri M. Gangardt, Curt von Keyserlingk
We study entanglement growth in a harmonic oscillator chain subjected to the weak measurement of observables which have been smeared-out over a length scale . We find that entan…
Structural Stability Hypothesis of Dual Unitary Quantum Chaos
Jonathon Riddell, Curt von Keyserlingk, Tomaž Prosen +1
Having spectral correlations that, over small enough energy scales, are described by random matrix theory is regarded as the most general defining feature of quantum chaotic system…
The ballistic to diffusive crossover in a weakly-interacting Fermi gas
Jerome Lloyd, Tibor Rakovszky, Frank Pollmann +1
Charge and energy are expected to diffuse in interacting systems of fermions at finite temperatures, even in the absence of disorder, with the interactions inducing a crossover fro…
The operator growth hypothesis in open quantum systems
N. S. Srivatsa, Curt von Keyserlingk
The operator growth hypothesis (OGH) is a technical conjecture about the behaviour of operators -- specifically, the asymptotic growth of their Lanczos coefficients -- under repeat…
Defining stable phases of open quantum systems
Tibor Rakovszky, Sarang Gopalakrishnan, Curt von Keyserlingk
The steady states of dynamical processes can exhibit stable nontrivial phases, which can also serve as fault-tolerant classical or quantum memories. For Markovian quantum (classica…
Phase diagram of the three-dimensional subsystem toric code
Yaodong Li, C. W. von Keyserlingk, Guanyu Zhu +1
Subsystem quantum error-correcting codes typically involve measuring a sequence of non-commuting parity check operators. They can sometimes exhibit greater fault-tolerance than con…
On Classical and Hybrid Shadows of Quantum States
Saumya Shivam, C. W. von Keyserlingk, S. L. Sondhi
Classical shadows are a computationally efficient approach to storing quantum states on a classical computer for the purposes of estimating expectation values of local observables,…
Operator backflow and the classical simulation of quantum transport
C. W. von Keyserlingk, Frank Pollmann, Tibor Rakovszky
Tensor product states have proved extremely powerful for simulating the area-law entangled states of many-body systems, such as the ground states of gapped Hamiltonians in one dime…
Operator Spreading in the Memory Matrix Formalism
Ewan McCulloch, C. W. von Keyserlingk
The spread and scrambling of quantum information is a topic of considerable current interest. Numerous studies suggest that quantum information evolves according to hydrodynamical…
Diffusive hydrodynamics of out-of-time-ordered correlators with charge conservation
Tibor Rakovszky, Frank Pollmann, C. W. von Keyserlingk
The scrambling of quantum information in closed many-body systems, as measured by out-of-time-ordered correlation functions (OTOCs), has lately received considerable attention. Rec…
Operator hydrodynamics, OTOCs, and entanglement growth in systems without conservation laws
Curt von Keyserlingk, Tibor Rakovszky, Frank Pollmann +1
Thermalization and scrambling are the subject of much recent study from the perspective of many-body quantum systems with locally bounded Hilbert spaces (`spin chains'), quantum fi…
Defining Time Crystals via Representation Theory
Vedika Khemani, C. W. von Keyserlingk, S. L. Sondhi
Time crystals are proposed states of matter which spontaneously break time translation symmetry. There is no settled definition of such states. We offer a new definition which foll…
Observation of discrete time-crystalline order in a disordered dipolar many-body system
Soonwon Choi, Joonhee Choi, Renate Landig +11
Understanding quantum dynamics away from equilibrium is an outstanding challenge in the modern physical sciences. It is well known that out-of-equilibrium systems can display a ric…
Field Theories for Gauged Symmetry Protected Topological Phases: Abelian Gauge Theories with non-Abelian Quasiparticles
Huan He, Yunqin Zheng, Curt von Keyserlingk
Dijkgraaf-Witten (DW) theories are of recent interest to the condensed matter community, in part because they represent topological phases of matter, but also because they characte…
No-Go Theorem for Boson Condensation in Topologically Ordered Quantum Liquids
Titus Neupert, Huan He, Curt von Keyserlingk +2
Certain phase transitions between topological quantum field theories (TQFT) are driven by the condensation of bosonic anyons. However, as bosons in a TQFT are themselves nontrivial…
Absolute Stability and Spatiotemporal Long-Range Order in Floquet systems
C. W. von Keyserlingk, Vedika Khemani, S. L. Sondhi
Recent work has shown that a variety of novel phases of matter arise in periodically driven Floquet systems. Among these are many-body localized phases which spontaneously break gl…
1D Many-body localized Floquet systems II: Symmetry-Broken phases
C. W. von Keyserlingk, S. L. Sondhi
Recent work suggests that a sharp definition of `phase of matter' can be given for periodically driven `Floquet' quantum systems exhibiting many-body localization. In this work we…
Phase Structure of 1d Interacting Floquet Systems I: Abelian SPTs
C. W. von Keyserlingk, S. L. Sondhi
Recent work suggests that a sharp definition of `phase of matter' can be given for some quantum systems out of equilibrium---first for many-body localized systems with time indepen…
Boson Condensation in Topologically Ordered Quantum Liquids
Titus Neupert, Huan He, Curt von Keyserlingk +2
Boson condensation in topological quantum field theories (TQFT) has been previously investigated through the formalism of Frobenius algebras and the use of vertex lifting coefficie…
Higher SPT's and a generalization of anomaly in-flow
Ryan Thorngren, Curt von Keyserlingk
Symmetry protected topological (SPT) phases of bosons in spatial dimensions have been characterized by the action of the protecting global symmetry on their boundary. The s…
Enhanced bulk-edge Coulomb coupling in Fractional Fabry-Perot interferometers
C. W. von Keyserlingk, S. H. Simon, Bernd Rosenow
We study the effects of bulk-edge Coulomb coupling on quantum Hall Fabry-Perot interferometers. We find that these effects can be appreciable in devices which would not usually be…