TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Laneve, Alessandro
A1  - Rota, Michele B.
A1  - Basso Basset, Francesco
A1  - Fiorente, Nicola P.
A1  - Krieger, Tobias M.
A1  - Covre da Silva, Saimon Filipe
A1  - Buchinger, Quirin
A1  - Stroj, Sandra
A1  - Höfling, Sven
A1  - Huber-Loyola, Tobias
A1  - Rastelli, Armando
A1  - Trotta, Rinaldo
A1  - Mataloni, Paolo
T1  - Experimental multi-state quantum discrimination in the frequency domain with quantum dot light
T2  - Arxiv, quant-ph
N2  - The quest for the realization of effective quantum state discrimination strategies is of great interest for quantum information technology, as well as for fundamental studies. Therefore, it is crucial to develop new and more efficient methods to implement discrimination protocols for quantum states. Among the others, single photon implementations are more advisable, because of their inherent security advantage in quantum communication scenarios. In this work, we present the experimental realization of a protocol employing a time-multiplexing strategy to optimally discriminate among eight non-orthogonal states, encoded in the four-dimensional Hilbert space spanning both the polarization degree of freedom and photon energy. The experiment, built on a custom-designed bulk optics analyser setup and single photons generated by a nearly deterministic solid-state source, represents a benchmarking example of minimum error discrimination with actual quantum states, requiring only linear optics and two photodetectors to be realized. Our work paves the way for more complex applications and delivers a novel approach towards high-dimensional quantum encoding and decoding operations.
Y1  - 2022
U6  - https://doi.org/10.48550/arXiv.2209.08324
DO  - https://doi.org/10.48550/arXiv.2209.08324
SP  - 13
S1  - 13
ER  -