Towards a Device Independent Proof of Indefinite Causal Order with a Quantum Switch
- Author(s)
- Carla M. D. Richter, Michael Antesberger, Huan Cao, Philip Walther, Lee A. Rozema
- Abstract
Building on concepts from Bell inequalities, we experimentally realize a device-independent protocol proving that the quantum switch creates an indefinite causal order. This is achieved by entangling the switch’s control qubit with a ancilla photon.
- Organisation(s)
- Research Network Quantum Aspects of Space Time, Quantum Optics, Quantum Nanophysics and Quantum Information
- No. of pages
- 2
- DOI
- https://doi.org/10.1364/quantum.2025.qm3b.2
- Publication date
- 2025
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103026 Quantum optics, 102040 Quantum computing
- ASJC Scopus subject areas
- General Computer Science, Space and Planetary Science, Control and Systems Engineering, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Instrumentation
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/d537a11d-87f9-440c-bb44-d05ed0ca531a