Experimental aspects of indefinite causal order in quantum mechanics

Autor(en)

Lee A. Rozema, Teodor Strömberg, Huan Cao, Yu Guo, Bi Heng Liu, Philip Walther

Abstrakt

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 considered in the context of the unification of quantum mechanics and general relativity, these causally indefinite processes have been shown to offer advantages in a wide variety of quantum-information processing tasks, ranging from quantum computation to quantum metrology. Here, we overview these advantages and the experimental efforts to realize them. We survey both the experimental techniques employed and the theoretical methods developed in support of the experiments, before discussing the interpretations of current experimental results and giving an outlook on the future of the field.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation, Forschungsverbund Quantum Aspects of Space Time

Externe Organisation(en)

University of Science and Technology of China (USTC), Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Nature Reviews Physics

Band

6

Seiten

483–499

Anzahl der Seiten

17

ISSN

2522-5820

DOI

https://doi.org/10.48550/arXiv.2405.00767

Publikationsdatum

08-2024

Peer-reviewed

Ja

ÖFOS 2012

103025 Quantenmechanik, 103026 Quantenoptik

ASJC Scopus Sachgebiete

Allgemeine Physik und Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d53c9908-11a6-493d-a143-2d8afc47cf08