109 citations · 751 across the 28 of their papers we have counts for
29 papers
Dissipative Dynamics of Graph-State Stabilizers with Superconducting Qubits
Liran Shirizly, Grégoire Misguich, Haggai Landa
We study experimentally and numerically the noisy evolution of multipartite entangled states, focusing on superconducting-qubit devices accessible via the cloud. We find that a val…
A solvable model for graph state decoherence dynamics
Jérôme Houdayer, Haggai Landa, Grégoire Misguich
We present an exactly solvable toy model for the continuous dissipative dynamics of permutation-invariant graph states of qubits. Such states are locally equivalent to an -q…
Practical Quantum State Tomography for Gibbs states
Yotam Y. Lifshitz, Eyal Bairey, Eli Arbel +3
Quantum state tomography is an essential tool for the characterization and verification of quantum states. However, as it cannot be directly applied to systems with more than a few…
Experimental Bayesian estimation of quantum state preparation, measurement, and gate errors in multi-qubit devices
Haggai Landa, Dekel Meirom, Naoki Kanazawa +2
We introduce a Bayesian method for the estimation of single qubit errors in quantum devices, and use it to characterize these errors on three 27-qubit superconducting qubit devices…
Simulating long-range hopping with periodically-driven superconducting qubits
Mor M. Roses, Haggai Landa, Emanuele G. Dalla Torre
Quantum computers are a leading platform for the simulation of many-body physics. This task has been recently facilitated by the possibility to program directly the time-dependent…
Finite temperature spectrum at the symmetry-breaking linear-zigzag transition
Jan Kiethe, Lars Timm, Haggai Landa +3
We investigate the normal mode spectrum of a trapped ion chain at the symmetry-breaking linear to zigzag transition and at finite temperatures. For this purpose we modulate the amp…
Experimental implementation of non-Clifford interleaved randomized benchmarking with a controlled-S gate
Shelly Garion, Naoki Kanazawa, Haggai Landa +4
Hardware efficient transpilation of quantum circuits to a quantum devices native gateset is essential for the execution of quantum algorithms on noisy quantum computers. Typical qu…
Static kinks in chains of interacting atoms
Haggai Landa, Cecilia Cormick, Giovanna Morigi
We theoretically analyse the equation of topological solitons in a chain of particles interacting via a repulsive power-law potential and confined by a periodic lattice. Starting f…
Correlation-induced steady states and limit cycles in driven dissipative quantum systems
Haggai Landa, Marco Schiró, Grégoire Misguich
We study a driven-dissipative model of spins one-half (qubits) on a lattice with nearest-neighbor interactions. Focusing on the role of spatially extended spin-spin correlations in…
Multistability of Driven-Dissipative Quantum Spins
Haggai Landa, Marco Schiró, Grégoire Misguich
We study the dynamics of lattice models of quantum spins one-half, driven by a coherent drive and subject to dissipation. Generically the meanfield limit of these models manifests…
Can a periodically driven particle resist laser cooling and noise?
A. Maitra, D. Leibfried, D. Ullmo +1
Studying a single atomic ion confined in a time-dependent periodic anharmonic potential, we find large amplitude trajectories stable for millions of oscillation periods in the pres…
Tuning nonthermal distributions to thermal ones in time-dependent Paul traps
H. Landa
We study the probability distribution of an atomic ion being laser-cooled in a periodically-driven Paul trap using a Floquet approach to the semiclassical photon scattering dynamic…
Controlling the potential landscape and normal modes of ion Coulomb crystals by a standing wave optical potential
Thomas Lauprêtre, Rasmus B. Linnet, Ian D. Leroux +3
Light-induced control of ions within small Coulomb crystals is investigated. By intense intracavity optical standing wave fields, subwavelength localization of individual ions is a…
Improving Super-Resolution Methods via Incremental Residual Learning
Muneeb Aadil, Rafia Rahim, Sibt ul Hussain
Recently, Convolutional Neural Networks (CNNs) have shown promising performance in super-resolution (SR). However, these methods operate primarily on Low Resolution (LR) inputs for…
Phase-space study of surface-electrode Paul traps: Integrable, chaotic, and mixed motions
V. Roberdel, D. Leibfried, D. Ullmo +1
We present a comprehensive phase-space treatment of the motion of charged particles in electrodynamic traps. Focusing on five-wire surface-electrode Paul traps, we study the detail…
Singularities of Floquet Scattering and Tunneling
H. Landa
We study quasi-bound states and scattering with short range potentials in three dimensions, subject to an axial periodic driving. We find that poles of the scattering S-matrix can…
Spectroscopy and Directed Transport of Topological Solitons in Crystals of Trapped Ions
J. Brox, P. Kiefer, M. Bujak +2
We study experimentally and theoretically discrete solitons in crystalline structures consisting of several tens of laser-cooled ions confined in a radiofrequency trap. Resonantly…
Two- and three-body problem with Floquet-driven zero-range interactions
A. G. Sykes, H. Landa, D. S. Petrov
We study the two-body scattering problem in the zero-range approximation with a sinusoidally driven scattering length and calculate the relation between the mean value and amplitud…
Optomechanical many-body cooling using frustration
Thomás Fogarty, Haggai Landa, Cecilia Cormick +1
We show that the vibrations of an ion Coulomb crystal can be cooled to the zero-point motion through the optomechanical coupling with a high-finesse cavity. Cooling results from th…
Quasi-bound states in periodically driven scattering
H. Landa
We present an approach for obtaining eigenfunctions of periodically driven time-dependent Hamiltonians. Assuming an approximate scale separation between two spatial regions where d…
Nano-friction in cavity quantum electrodynamics
T. Fogarty, C. Cormick, H. Landa +3
The dynamics of cold trapped ions in a high-finesse resonator results from the interplay between the long-range Coulomb repulsion and the cavity-induced interactions. The latter ar…
Entanglement Generation Using Discrete Solitons in Coulomb Crystals
H. Landa, A. Retzker, T. Schaetz +1
Laser cooled and trapped ions can crystallize and feature discrete solitons, that are nonlinear, topologically-protected configurations of the Coulomb crystal. Such solitons, as th…
Structure, dynamics and bifurcations of discrete solitons in trapped ion crystals
H. Landa, J. Brox, M. Mielenz +2
We study discrete solitons (kinks) accessible in state-of-the-art trapped ion experiments, considering zigzag crystals and quasi-3D configurations, both theoretically and experimen…
Trapping of Topological-Structural Defects in Coulomb Crystals
M. Mielenz, H. Landa, J. Brox +5
We study experimentally and theoretically structural defects which are formed during the transition from a laser cooled cloud to a Coulomb crystal, consisting of tens of ions in a…