Experimental aspects of indefinite causal order in quantum mechanics
- Author(s)
- Lee A. Rozema, Teodor Strömberg, Huan Cao, Yu Guo, Bi Heng Liu, Philip Walther
- Abstract
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(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information, Research Network Quantum Aspects of Space Time
- External organisation(s)
- University of Science and Technology of China (USTC), Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Nature Reviews Physics
- Volume
- 6
- Pages
- 483–499
- No. of pages
- 17
- ISSN
- 2522-5820
- DOI
- https://doi.org/10.48550/arXiv.2405.00767
- Publication date
- 08-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103026 Quantum optics
- ASJC Scopus subject areas
- Physics and Astronomy(all)
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/experimental-aspects-of-indefinite-causal-order-in-quantum-mechanics(d53c9908-11a6-493d-a143-2d8afc47cf08).html