28 citations · 128 across the 29 of their papers we have counts for
25 papers · 1 filter
Adaptive Qubit Encoding for Continuous-Variable Quantum Optimization
Samuele Cavinato, Marco Tesoro, Gianluca Morettini +4
Optimizing continuous-variable functions on qubit-based quantum hardware requires a finite representation of the search space and a solver-compatible representation of the objectiv…
Adaptive Reconstruction of Bosonic Quantum States
Vasilisa Usova, Phila Rembold, Ian Yang +4
Bosonic quantum systems provide a hardware-efficient platform for quantum information processing but remain challenging to characterise due to their large Hilbert space and the hig…
Phase transitions in quantum-circuit compilation
Andrea De Girolamo, Davide Rattacaso, Simone Notarnicola +2
Quantum-circuit compilation aims at finding an optimized realization of a target circuit under given constraints, e.g., the minimization of hardware-induced errors and the unitary-…
Observable Estimation in the Absence of Classical Verification
Samantha V. Barron, Bradley Mitchell, Vinay Tripathi +45
The predictive success of quantum mechanics underpins many areas of modern science, even as the exact simulation of large, interacting quantum systems remains beyond the reach of c…
False vacuum decay in a two-dimensional quantum spin system
Luka Pavešić, Ian G. Moss, Simone Montangero
False vacuum decay describes the relaxation of a metastable state through the nucleation and growth of bubbles of the stable phase. Despite describing a broad variety of phenomena…
Preparation and detection of quasiparticles for quantum simulations of scattering
Mattia Morgavi, Peter Majcen, Marco Rigobello +2
We introduce a method for the selective preparation and detection of quasiparticle wave packets, based on creation operators that generate dressed, localized excitations on top of…
Quantum algorithms for compact polymer thermodynamics
Davide Rattacaso, Daniel Jaschke, Antonio Trovato +2
Efficient sampling from ensembles of Hamiltonian cycles is critical for predicting the thermodynamic properties of compact polymers, with applications including modeling protein an…
Superradiant decay in non-Markovian Waveguide Quantum Electrodynamics
Rosa Lucia Capurso, Giuseppe Calajó, Simone Montangero +5
An array of initially excited emitters coupled to a one-dimensional waveguide exhibits superradiant decay under the Born-Markov approximation, manifested as a coherent burst of pho…
Color code thresholds under circuit-level noise beyond the Pauli framework
Francesco Pio Barone, Daniel Jaschke, Ilaria Siloi +1
A quantum error correction code is assessed over its ability to correct errors in noisy quantum circuits. This task requires extensive simulations of faulty quantum circuits, which…
Scattering and induced false vacuum decay in the two-dimensional quantum Ising model
Luka Pavešić, Marco Di Liberto, Simone Montangero
We study scattering in the quantum Ising model in two dimensions. In the ordered phase, the spectrum contains a ladder of bound states and intertwined scattering resonances, which…
Quantum algorithms for equational reasoning
Davide Rattacaso, Daniel Jaschke, Marco Ballarin +2
As a cornerstone of automated reasoning, equational reasoning finds equivalences between symbolic expressions and fuels advances across scientific disciplines. Yet, its potential r…
The Augmented Tree Tensor Network Cookbook
Nora Reinić, Luka Pavešić, Daniel Jaschke +1
An augmented tree tensor network (aTTN) is a tensor network ansatz constructed by applying a layer of unitary disentanglers to a tree tensor network. The disentanglers absorb a par…
Many-body quantum dimerization in 2D atomic arrays
Giuseppe Calajò, Matija Tečer, Simone Montangero +2
We consider a 2D atomic array coupled to different photonic environments, focusing on the half-filled excitation subspace, where strong photon interactions can give rise to complex…
Entanglement transitions in a boundary-driven open quantum many-body system
Darvin Wanisch, Nora Reinić, Daniel Jaschke +2
We introduce a numerical framework for integrating Markovian dynamics on tree tensor operator (TTO) ansatz states. This framework enables the simulation of both transient and stead…
Benchmarking Quantum Red TEA on CPUs, GPUs, and TPUs
Daniel Jaschke, Marco Ballarin, Nora Reinić +2
We benchmark simulations of many-body quantum systems on heterogeneous hardware platforms using CPUs, GPUs, and TPUs. We compare different linear algebra backends, e.g., NumPy vers…
Quantum circuit compilation with quantum computers
Davide Rattacaso, Daniel Jaschke, Marco Ballarin +2
Compilation optimizes quantum algorithms performances on real-world quantum computers. To date, it is performed via classical optimization strategies. We introduce a class of quant…
Constrained dynamics and confinement in the two-dimensional quantum Ising model
Luka Pavešić, Daniel Jaschke, Simone Montangero
We investigate the dynamics of the quantum Ising model on two-dimensional square lattices up to spins. In the ordered phase, the model is predicted to exhibit dynami…
Optimisation of ultrafast singlet fission in 1D rings towards unit efficiency
Francesco Campaioli, Alice Pagano, Daniel Jaschke +1
Singlet fission (SF) is an electronic transition that in the last decade has been under the spotlight for its applications in optoelectronics, from photovoltaics to spintronics. De…
Finite-temperature Rydberg arrays: quantum phases and entanglement characterization
Nora Reinić, Daniel Jaschke, Darvin Wanisch +2
As one of the most prominent platforms for analog quantum simulators, Rydberg atom arrays are a promising tool for exploring quantum phases and transitions. While the ground state…
Hybrid Tree Tensor Networks for quantum simulation
Julian Schuhmacher, Marco Ballarin, Alberto Baiardi +4
Hybrid Tensor Networks (hTN) offer a promising solution for encoding variational quantum states beyond the capabilities of efficient classical methods or noisy quantum computers al…
Optimal control transport of neutral atoms in optical tweezers at finite temperature
Alice Pagano, Daniel Jaschke, Werner Weiss +1
The transport of neutral atoms in Rydberg quantum computers is a crucial step of the initial arrangement of the grid as well as to the dynamic connectivity, recently successfully d…
Digital quantum simulation of a (1+1)D SU(2) lattice gauge theory with ion qudits
Giuseppe Calajò, Giuseppe Magnifico, Claire Edmunds +3
We present a quantum simulation strategy for a (1+1)D SU(2) non-abelian lattice gauge theory with dynamical matter, a hardcore-gluon Hamiltonian Yang-Mills, tailored to a six-level…
Optimal sampling of tensor networks targeting wave function's fast decaying tails
Marco Ballarin, Pietro Silvi, Simone Montangero +1
We introduce an optimal strategy to sample quantum outcomes of local measurement strings for isometric tensor network states. Our method generates samples based on an exact cumulat…
Strongly interacting photons in 2D waveguide QED
Matija Tečer, Marco Di Liberto, Pietro Silvi +3
One dimensional confinement in waveguide Quantum Electrodynamics (QED) plays a crucial role to enhance light-matter interactions and to induce a strong quantum nonlinear optical re…