Hiding Ignorance Using High Dimensions

Autor: Kewming, M. J., Shrapnel, S., White, A. G., Romero, J.
Rok vydání: 2019
Předmět:
Zdroj: Phys. Rev. Lett. 124, 250401 (2020)
Druh dokumentu: Working Paper
DOI: 10.1103/PhysRevLett.124.250401
Popis: The absence of information -- entirely or partly -- is called ignorance. Naturally, one might ask if some ignorance of a whole system will imply some ignorance of its parts. Our classical intuition tells us yes, however quantum theory tells us no: it is possible to encode information in a quantum system so that despite some ignorance of the whole, it is impossible to identify the unknown part arXiv:1011.6448. Experimentally verifying this counter-intuitive fact requires controlling and measuring quantum systems of high dimension $(d {>} 9)$. We provide this experimental evidence using the transverse spatial modes of light, a powerful resource for testing high dimensional quantum phenomenon.
Databáze: arXiv