Experimental aspects of indefinite causal order in quantum mechanics

LA Rozema, T Strömberg, H Cao, Y Guo, BH Liu… - Nature Reviews …, 2024 - nature.com
In the past decade, the toolkit of quantum information has been expanded to include
processes in which the basic operations do not have definite causal relations. Originally …

Non-Markovian quantum process tomography

GAL White, FA Pollock, LCL Hollenberg, K Modi… - PRX Quantum, 2022 - APS
Characterization protocols have so far played a central role in the development of noisy
intermediate-scale quantum (NISQ) computers capable of impressive quantum feats. This …

Quantum non-Markovianity: Overview and recent developments

U Shrikant, P Mandayam - Frontiers in Quantum Science and …, 2023 - frontiersin.org
In the current era of noisy intermediate-scale quantum (NISQ) devices, research on the
theory of open system dynamics has a crucial role to play. In particular, understanding and …

Experimental benchmarking of an automated deterministic error-suppression workflow for quantum algorithms

PS Mundada, A Barbosa, S Maity, Y Wang, T Merkh… - Physical Review …, 2023 - APS
Excitement about the promise of quantum computers is tempered by the reality that the
hardware remains exceptionally fragile and error prone, forming a bottleneck in the …

Compressed gate characterization for quantum devices with time-correlated noise

MJ Gullans, M Caranti, AR Mills, JR Petta - PRX Quantum, 2024 - APS
As quantum devices make steady progress towards intermediate scale and fault-tolerant
quantum computing, it is essential to develop rigorous and efficient measurement protocols …

Sampling complexity of open quantum systems

IA Aloisio, GAL White, CD Hill, K Modi - PRX Quantum, 2023 - APS
Open quantum systems are ubiquitous in the physical sciences, with widespread
applications in the areas of chemistry, condensed-matter physics, material science, optics …

Characterising the hierarchy of multi-time quantum processes with classical memory

P Taranto, MT Quintino, M Murao, S Milz - Quantum, 2024 - quantum-journal.org
Memory is the fundamental form of temporal complexity: when present but uncontrollable, it
manifests as non-Markovian noise; conversely, if controllable, memory can be a powerful …

Operational Metric for Quantum Chaos and the Corresponding Spatiotemporal-Entanglement Structure

N Dowling, K Modi - PRX Quantum, 2024 - APS
Chaotic systems are highly sensitive to a small perturbation and are ubiquitous throughout
the biological sciences, the physical sciences, and even the social sciences. Taking this as …

Quantum non-Markovianity elusive to interventions

D Burgarth, P Facchi, D Lonigro, K Modi - Physical Review A, 2021 - APS
The non-Markovian nature of open quantum dynamics lies in the structure of multitime
correlations, which are accessible by means of interventions. Here, by examining multitime …

Extracting quantum dynamical resources: Consumption of non-Markovianity for noise reduction

GD Berk, S Milz, FA Pollock, K Modi - npj Quantum Information, 2023 - nature.com
A great many efforts are dedicated to developing noise reduction and mitigation methods.
One remarkable achievement in this direction is dynamical decoupling (DD), although its …