Year: 2024
Type: article
Abstract: We implement an experiment on a photonic quantum processor establishing efficacy of the elementary quantum system in classical information storage. The advantage is established by considering a class of simple bipartite games played with the communication resource qubit and classical bit (c bit), respectively. Conventional wisdom, supported by the no-go theorems of Holevo and Frenkel-Weiner, suggests that such a quantum advantage is unattainable when the sender and receiver share randomness or classical correlations. However, our results reveal a quantum advantage in a scenario devoid of any shared randomness. Our experiment involves the development of a variational triangular polarimeter, enabling the realization of positive operator value measurements crucial for establishing the targeted quantum advantage. Beyond showcasing a robust communication advantage with a single qubit, our work paves the way for immediate applications in near-term quantum technologies. It provides a semi-device-independent certification scheme for quantum encoding-decoding systems and offers an efficient method for information loading and transmission in quantum networks.
Source: Physical Review Letters
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Funders: European Commission, Department of Science and Technology, Ministry of Science and Technology, India, National Natural Science Foundation of China, Fonds De La Recherche Scientifique - FNRS, Belgian Federal Science Policy Office, Fonds Wetenschappelijk Onderzoek, Natural Science Foundation of Henan Province, QuantERA, Horizon 2020 Framework Programme, HORIZON EUROPE Framework Programme, Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture
Awards: G1189243048, G1747522946, G2092215655, G2994575279, G3480469966, G3617563397, G3928303300, G434337789, G4653766936, Creating highly entangled quantum states in the NISQ era (CHEQS)., G5271502856, G5444244327, Belgian Quantum Communication Testbed Network, G575169067, QuantERA II ERA-NET Cofund in Quantum Technologies, G6251103608, G637531880, Quantum Secure Networks Partnership
OpenAlex ID: W4404304707