Effective quantum volume, fidelity and computational cost of noisy quantum processing experiments

K Kechedzhi, SV Isakov, S Mandrà, B Villalonga… - Future Generation …, 2024 - Elsevier
Today's experimental noisy quantum processors can compete with and surpass all known
algorithms on state-of-the-art supercomputers for the computational benchmark task of …

Noise-assisted digital quantum simulation of open systems using partial probabilistic error cancellation

JD Guimarães, J Lim, MI Vasilevskiy, SF Huelga… - PRX Quantum, 2023 - APS
Quantum systems are inherently open and susceptible to environmental noise, which can
have both detrimental and beneficial effects on their dynamics. This phenomenon has been …

Hilbert space fragmentation in open quantum systems

Y Li, P Sala, F Pollmann - Physical Review Research, 2023 - APS
We investigate the phenomenon of Hilbert space fragmentation (HSF) in open quantum
systems and find that it can stabilize highly entangled steady states. For concreteness, we …

On-demand driven dissipation for cavity reset and cooling

V Maurya, H Zhang, D Kowsari, A Kuo, DM Hartsell… - PRX Quantum, 2024 - APS
We present a superconducting circuit device that provides active, on-demand, tunable
dissipation on a target mode of the electromagnetic field. Our device is based on a tunable …

Thermodynamics of quantum trajectories on a quantum computer

M Cech, I Lesanovsky, F Carollo - Physical Review Letters, 2023 - APS
Quantum computers have recently become available as noisy intermediate-scale quantum
devices. Already these machines yield a useful environment for research on quantum …

Corrections to diffusion in interacting quantum systems

AA Michailidis, DA Abanin, LV Delacrétaz - arXiv preprint arXiv …, 2023 - arxiv.org
Transport and the approach to equilibrium in interacting classical and quantum systems is a
challenging problem of both theoretical and experimental interest. One useful organizing …

Quantum algorithm for solving open-system dynamics on quantum computers using noise

J Leppäkangas, N Vogt, KR Fratus, K Bark, JA Vaitkus… - Physical Review A, 2023 - APS
In this paper we present a quantum algorithm that uses noise as a resource. The goal of our
quantum algorithm is the calculation of operator averages of an open quantum system …

Gauged cooling of topological excitations and emergent fermions on quantum simulators

G Kishony, MS Rudner, A Rosch, E Berg - arXiv preprint arXiv:2310.16082, 2023 - arxiv.org
Simulated cooling is a robust method for preparing low-energy states of many-body
Hamiltonians on near-term quantum simulators. In such schemes, a subset of the simulator's …

Diagrammatic Monte Carlo for dissipative quantum impurity models

M Vanhoecke, M Schirò - Physical Review B, 2024 - APS
We develop a diagrammatic Monte Carlo method for the real-time dynamics of dissipative
quantum impurity models. These are small open quantum systems with interaction and local …

Probing critical phenomena in open quantum systems using atom arrays

F Fang, K Wang, VS Liu, Y Wang, R Cimmino… - arXiv preprint arXiv …, 2024 - arxiv.org
At continuous phase transitions, quantum many-body systems exhibit scale-invariance and
complex, emergent universal behavior. Most strikingly, at a quantum critical point …