332 citations · 1.4k across the 29 of their papers we have counts for
31 papers
Trotterisation Thresholds and Dissipative Quantum Chaos in Open-System Digital Quantum Simulation
Angsar Manatuly, Lukas M. Sieberer, Cahit Kargi +1
Digital quantum simulation (DQS) is one of the most promising applications of quantum computing. Trotterised DQS models quantum dynamics by decomposing the evolution into a sequenc…
Replica Keldysh field theory of quantum-jump processes: General formalism and application to imbalanced and inefficient fermion counting
Felix Kloiber-Tollinger, Lukas M. Sieberer
Measurement-induced phase transitions have largely been explored for projective or continuous measurements of Hermitian observables, assuming perfect detection without information…
Absence of measurement- and unraveling-induced entanglement transitions in continuously monitored one-dimensional free fermions
Clemens Niederegger, Tatiana Vovk, Elias Starchl +1
Continuous monitoring of one-dimensional free fermionic systems can generate phenomena reminiscent of quantum criticality, such as logarithmic entanglement growth, algebraic correl…
Noise resilience of two-dimensional Floquet topological phases
Balaganchi A. Bhargava, Sanjib Kumar Das, Lukas M. Sieberer +1
We study the effect of noise on two-dimensional periodically driven topological phases, focusing on two examples: the anomalous Floquet-Anderson phase and the disordered Floquet-Ch…
Generalized Zeno effect and entanglement dynamics induced by fermion counting
Elias Starchl, Mark H. Fischer, Lukas M. Sieberer
We study a one-dimensional lattice system of free fermions subjected to a generalized measurement process: the system exchanges particles with its environment, but each fermion lea…
Universality in driven open quantum matter
Lukas M. Sieberer, Michael Buchhold, Jamir Marino +1
Universality is a powerful concept, which enables making qualitative and quantitative predictions in systems with extensively many degrees of freedom. It finds realizations in almo…
Quantum quenches in driven-dissipative quadratic fermionic systems with parity-time symmetry
Elias Starchl, Lukas M. Sieberer
We study the quench dynamics of noninteracting fermionic quantum many-body systems that are subjected to Markovian drive and dissipation and are described by a quadratic Liouvillia…
Digital Quantum Simulation, Learning of the Floquet Hamiltonian, and Quantum Chaos of the Kicked Top
Tobias Olsacher, Lorenzo Pastori, Christian Kokail +2
The kicked top is one of the paradigmatic models in the study of quantum chaos~[F.~Haake et al., \emph{Quantum Signatures of Chaos (Springer Series in Synergetics vol 54)} (2018)].…
Relaxation to a Parity-Time Symmetric Generalized Gibbs Ensemble after a Quantum Quench in a Driven-Dissipative Kitaev Chain
Elias Starchl, Lukas M. Sieberer
The construction of the generalized Gibbs ensemble, to which isolated integrable quantum many-body systems relax after a quantum quench, is based upon the principle of maximum entr…
Quantum Chaos and Universal Trotterisation Behaviours in Digital Quantum Simulations
Cahit Kargi, Angsar Manatuly, Lukas M. Sieberer +7
Digital quantum simulation (DQS) is one of the most promising paths for achieving first useful real-world applications for quantum processors. Yet even assuming rapid progress in d…
Entanglement Spectrum Crossings Reveal non-Hermitian Dynamical Topology
Sharareh Sayyad, Jinlong Yu, Adolfo G. Grushin +1
The development of non-Hermitian topological band theory has led to observations of novel topological phenomena in effectively classical, driven and dissipative systems. However, f…
Scalable and Parallel Tweezer Gates for Quantum Computing with Long Ion Strings
Tobias Olsacher, Lukas Postler, Philipp Schindler +3
Trapped-ion quantum computers have demonstrated high-performance gate operations in registers of about ten qubits. However, scaling up and parallelizing quantum computations with l…
Quantized Floquet topology with temporal noise
Christopher I. Timms, Lukas M. Sieberer, Michael H. Kolodrubetz
Time-periodic (Floquet) drive is a powerful method to engineer quantum phases of matter, including fundamentally non-equilibrium states that are impossible in static Hamiltonian sy…
Monitoring Quantum Simulators via Quantum Non-Demolition Couplings to Atomic Clock Qubits
Denis V. Vasilyev, Andrey Grankin, Mikhail A. Baranov +2
We discuss monitoring the time evolution of an analog quantum simulator via a quantum non-demolition (QND) coupling to an auxiliary `clock' qubit. The QND variable of interest is t…
Quantum Many-Body Physics with Ultracold Polar Molecules: Nanostructured Potential Barriers and Interactions
Andreas Kruckenhauser, Lukas M. Sieberer, William G. Tobias +8
We design dipolar quantum many-body Hamiltonians that will facilitate the realization of exotic quantum phases under current experimental conditions achieved for polar molecules. T…
Quantum Non-demolition Measurement of a Many-Body Hamiltonian
Dayou Yang, Andrey Grankin, Lukas M. Sieberer +2
In an ideal quantum measurement, the wave function of a quantum system collapses to an eigenstate of the measured observable, and the corresponding eigenvalue determines the measur…
Digital Quantum Simulation, Trotter Errors, and Quantum Chaos of the Kicked Top
Lukas M. Sieberer, Tobias Olsacher, Andreas Elben +4
This work aims at giving Trotter errors in digital quantum simulation (DQS) of collective spin systems an interpretation in terms of quantum chaos of the kicked top. In particular,…
Designing ground states of Hopfield networks for quantum state preparation
Clemens Dlaska, Lukas M. Sieberer, Wolfgang Lechner
We present a protocol to store a polynomial number of arbitrary bit strings, encoded as spin configurations, in the approximately degenerate low-energy manifold of an all-to-all co…
Statistical periodicity in driven quantum systems: General formalism and application to noisy Floquet topological chains
Lukas M. Sieberer, Maria-Theresa Rieder, Mark H. Fischer +1
Much recent experimental effort has focused on the realization of exotic quantum states and dynamics predicted to occur in periodically driven systems. But how robust are the sough…
Probing scrambling using statistical correlations between randomized measurements
Benoît Vermersch, Andreas Elben, Lukas M. Sieberer +2
We propose and analyze a protocol to study quantum information scrambling using statistical correlations between measurements, which are performed after evolving a quantum system f…
Topological Defects in Anisotropic Driven Open Systems
Lukas M. Sieberer, Ehud Altman
We study the dynamics and unbinding transition of vortices in the compact anisotropic Kardar-Parisi-Zhang (KPZ) equation. The combination of non-equilibrium conditions and strong s…
Localization counteracts decoherence in noisy Floquet topological chains
M. -T. Rieder, L. M. Sieberer, M. H. Fischer +1
The topological phases of periodically-driven, or Floquet systems, rely on a perfectly periodic modulation of system parameters in time. Even the smallest deviation from periodicit…
Programmable Superpositions of Ising Configurations
Lukas M. Sieberer, Wolfgang Lechner
We present a framework to prepare superpositions of bit strings, i.e., many-body spin configurations, with deterministic programmable probabilities. The spin configurations are enc…
Space-time vortex driven crossover and vortex turbulence phase transition in one-dimensional driven open condensates
Liang He, Lukas M. Sieberer, Sebastian Diehl
We find a first order transition driven by the strength of non-equilibrium conditions of one-dimensional driven open condensates. Associated with this transition is a new stable no…