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 …

Remote charging and degradation suppression for the quantum battery

WL Song, HB Liu, B Zhou, WL Yang, JH An - Physical Review Letters, 2024 - APS
The quantum battery (QB) makes use of quantum effects to store and supply energy, which
may outperform its classical counterpart. However, there are two challenges in this field. One …

Experimental validation of enhanced information capacity by quantum switch in accordance with thermodynamic laws

C **, X Liu, H Liu, K Huang, X Long, D Ebler, X Nie… - Physical Review Letters, 2024 - APS
We experimentally probe the interplay of the quantum switch with the laws of
thermodynamics. The quantum switch places two channels in a superposition of orders and …

Resonator-qutrit quantum battery

FM Yang, FQ Dou - Physical Review A, 2024 - APS
Quantum batteries (QBs) are energy storage and transfer microdevices that open up new
possibilities in energy technology. Here, we derive a resonator–multiple-qutrit quantum …

Work extraction from quantum coherence in non-equilibrium environment

M Hadipour, S Haseli - Scientific Reports, 2024 - nature.com
Ergotropy, which represents the maximum amount of work that can be extracted from a
quantum system, has become a focal point of interest in the fields of quantum …

Quick charging of a quantum battery with superposed trajectories

PR Lai, JD Lin, YT Huang, HC Jan, YN Chen - Physical Review Research, 2024 - APS
We propose charging protocols for quantum batteries based on quantum superpositions of
trajectories. Specifically, we consider that a qubit (the battery) interacts with multiple cavities …

General communication enhancement via the quantum switch

Z Wu, J Fullwood, Z Ma, SQ Zhou, Q Zhao, G Chiribella - Physical Review A, 2025 - APS
Recent studies have shown that quantum information may be effectively transmitted by a
finite collection of completely depolarizing channels in a coherent superposition of different …

Demonstration of superior communication through thermodynamically free channels in an optical quantum switch

H Tang, Y Guo, XM Hu, YF Huang, BH Liu, CF Li… - Physical Review A, 2024 - APS
The release of the causal structure of physical events from a well-defined order to an
indefinite order stimulates remarkable enhancements in various quantum information tasks …

Enhancing the charging performance of quantum batteries with the work medium of an entangled coupled-cavity array

HB Ma, K Xu, HG Li, ZG Li, HJ Zhu - Physical Review A, 2024 - APS
Although entanglement is considered as a crucial resource for quantum information
processing, it is still unknown whether the presence of quantum entanglement in the working …

Floquet driven long-range interactions induce super-extensive scaling in quantum battery

S Puri, TK Konar, LGC Lakkaraju, AS De - arxiv preprint arxiv:2412.00921, 2024 - arxiv.org
Achieving quantum advantage in energy storage and power extraction is a primary objective
in the design of quantum-based batteries. We explore how long-range (LR) interactions in …