Experimental Realisation of Indefinite Causal Ordered QKD within a Quantum Switch
- Author(s)
- Yann Valibouse, Martí Cladera-Rosselló, Michael Antesberger, Hector Spencer-Wood, Kyrylo Simonov, Philip Walther, Lee A. Rozema
- Abstract
We experimentally realize nondestructive polarization measurements inside an interferometer, preserving path coherence via ancilla coupling and path-information erasure. Implemented within a quantum switch, the protocol enables QKD and the measurement of a causal witness.
- Organisation(s)
- Quantum Science, Department of Mathematics
- External organisation(s)
- Vienna Doctoral School in Physics, University of Glasgow
- Publication date
- 2026
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 102040 Quantum computing, 103026 Quantum optics
- 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/f53f5e88-2dae-4549-b7c2-86b5c1631d87