318 citations · 1.5k across the 19 of their papers we have counts for
15 papers · 1 filter
Derandomized shallow shadows: Efficient Pauli learning with bounded-depth circuits
Katherine Van Kirk, Christian Kokail, Jonathan Kunjummen +7
Efficiently estimating large numbers of non-commuting observables is an important subroutine of many quantum science tasks. We present the derandomized shallow shadows (DSS) algori…
Hamiltonian and Liouvillian learning in weakly-dissipative quantum many-body systems
Tobias Olsacher, Tristan Kraft, Christian Kokail +2
We discuss Hamiltonian and Liouvillian learning for analog quantum simulation from non-equilibrium quench dynamics in the limit of weakly dissipative many-body systems. We present…
Exploring Large-Scale Entanglement in Quantum Simulation
Manoj K. Joshi, Christian Kokail, Rick van Bijnen +5
Entanglement is a distinguishing feature of quantum many-body systems, and uncovering the entanglement structure for large particle numbers in quantum simulation experiments is a f…
Entanglement phase diagrams from partial transpose moments
Jose Carrasco, Matteo Votto, Vittorio Vitale +5
We present experimentally and numerically accessible quantities that can be used to differentiate among various families of random entangled states. To this end, we analyze the ent…
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)].…
Characterization and Verification of Trotterized Digital Quantum Simulation via Hamiltonian and Liouvillian Learning
Lorenzo Pastori, Tobias Olsacher, Christian Kokail +1
The goal of digital quantum simulation is to approximate the dynamics of a given target Hamiltonian via a sequence of quantum gates, a procedure known as Trotterization. The qualit…
Probing infinite many-body quantum systems with finite-size quantum simulators
Viacheslav Kuzmin, Torsten V. Zache, Christian Kokail +4
Experimental studies of synthetic quantum matter are necessarily restricted to approximate ground states prepared on finite-size quantum simulators. In general, this limits their r…
Quantum Variational Learning of the Entanglement Hamiltonian
Christian Kokail, Bhuvanesh Sundar, Torsten V. Zache +5
Learning the structure of the entanglement Hamiltonian (EH) is central to characterizing quantum many-body states in analog quantum simulation. We describe a protocol where spatial…
Symmetry-resolved entanglement detection using partial transpose moments
Antoine Neven, Jose Carrasco, Vittorio Vitale +8
We propose an ordered set of experimentally accessible conditions for detecting entanglement in mixed states. The -th condition involves comparing moments of the partially trans…
Theoretical and Experimental Perspectives of Quantum Verification
Jose Carrasco, Andreas Elben, Christian Kokail +2
In this perspective we discuss verification of quantum devices in the context of specific examples, formulated as proposed experiments. Our first example is verification of analog…
Entanglement Hamiltonian Tomography in Quantum Simulation
Christian Kokail, Rick van Bijnen, Andreas Elben +2
Entanglement is the crucial ingredient of quantum many-body physics, and characterizing and quantifying entanglement in closed system dynamics of quantum simulators is an outstandi…
Towards simulating 2D effects in lattice gauge theories on a quantum computer
Danny Paulson, Luca Dellantonio, Jan F. Haase +8
Gauge theories are the most successful theories for describing nature at its fundamental level, but obtaining analytical or numerical solutions often remains a challenge. We propos…
Mixed-state entanglement from local randomized measurements
Andreas Elben, Richard Kueng, Hsin-Yuan Huang +8
We propose a method for detecting bipartite entanglement in a many-body mixed state based on estimating moments of the partially transposed density matrix. The estimates are obtain…
Cross-Platform Verification of Intermediate Scale Quantum Devices
Andreas Elben, Benoît Vermersch, Rick van Bijnen +7
We describe a protocol for cross-platform verification of quantum simulators and quantum computers. We show how to measure directly the overlap an…
Variational spin-squeezing algorithms on programmable quantum sensors
Raphael Kaubruegger, Pietro Silvi, Christian Kokail +5
Arrays of atoms trapped in optical tweezers combine features of programmable analog quantum simulators with atomic quantum sensors. Here we propose variational quantum algorithms,…