Experimental observation of impossible-to-beat quantum advantage on a hybrid photonic system

Abstract

Quantum resources outperform classical ones for certain communication and computational tasks. Remarkably, in some cases, the quantum advantage cannot be improved using hypothetical postquantum resources. A class of tasks with this property can be singled out using graph theory. Here we report the experimental observation of an impossible-to-beat quantum advantage on a four-dimensional quantum system defined by the polarization and orbital angular momentum of a single photon. The results show pristine evidence of the quantum advantage and are compatible with the maximum advantage allowed using postquantum resources.

REVTeX4, 5 pages, 2 figures

References in corpus (17)

• Beating the channel capacity limit for linear photonic superdense coding
• Information Causality as a Physical Principle
• Informational derivation of Quantum Theory
• Experimentally testable state-independent quantum contextuality
• Quantum information transfer from spin to orbital angular momentum of photons
• State-independent experimental test of quantum contextuality
• The uncertainty principle determines the non-locality of quantum mechanics
• A derivation of quantum theory from physical requirements
• Violation of Bell's inequality: criterion for quantum communication complexity advantage
• Experimental demonstration of fractional orbital angular momentum entanglement of two photons
• State-independent quantum contextuality with single photons
• Local Quantum Measurement and No-Signaling Imply Quantum Correlations
• Experimental generation and characterization of single-photon hybrid ququarts based on polarization-orbital angular momentum encoding
• Polarization control of single photon quantum orbital angular momentum states
• Deterministic qubit transfer between orbital and spin angular momentum of single photons
• Qudits of composite dimension, mutually unbiased bases and projective ring geometry
• Experimental quantum "Guess my Number" protocol using multiphoton entanglement

Cited by in corpus (23)

• Photonic polarization gears for ultra-sensitive angular measurements
• Simple explanation of the quantum violation of a fundamental inequality
• All noncontextuality inequalities for the n-cycle scenario
• In-field entanglement distribution over a 96 km-long submarine optical fibre
• Hybrid Entangled Entanglement in Vector Vortex Beams
• Experimental implementation of a Kochen-Specker set of quantum tests
• Basic exclusivity graphs in quantum correlations
• Test of mutually unbiased bases for six-dimensional photonic quantum systems
• Device-independent certification of high-dimensional quantum systems
• Significant-loophole-free test of Kochen-Specker contextuality using two species of atomic-ions
• Bell inequalities for the simplest exclusivity graph
• Generation of tunable entanglement and violation of a Bell-like inequality between different degrees of freedom of a single photon
• Twin inequality for fully contextual quantum correlations
• A proof of the Kochen-Specker theorem can always be converted to a state-independent noncontextuality inequality
• Testing noncontextuality inequalities that are building blocks of quantum correlations
• Experimental test of high-dimensional quantum contextuality based on contextuality concentration
• Experimental demonstration of fully contextual quantum correlations on an NMR quantum information processor
• Spin-parity effect in violation of bell's inequalities for entangled states of parallel polarization
• Exclusivity structures and graph representatives of local complementation orbits
• Dynamics of single-mode nonclassicalities and quantum correlations in the Jaynes-Cummings model
• Irreducible magic sets for $n$-qubit systems
• Experimental demonstration of the violation of the temporal Peres-Mermin inequality using contextual temporal correlations and noninvasive measurements
• Insights into Quantum Contextuality and Bell Nonclassicality: A Study on Random Pure Two-Qubit Systems