Quantum stochastic communication via high-dimensional entanglement

Abstract

Entanglement has the ability to enhance the transmission of classical information over a quantum channel. However, fully harvesting this advantage typically requires complex entangling measurements, which are challenging to implement and scale with the system's size. In this work, we consider a natural quantum information primitive in which the message to be communicated is selected stochastically. We introduce a protocol that leverages high-dimensional entanglement to perform this task perfectly, without requiring quantum interference between particles at the measurement station. We experimentally demonstrate the protocol's scalability in an optical setup using 8-dimensional entanglement and multi-outcome detection, providing a practical solution for stochastic communication and a robust method for certifying the dimensionality of entanglement in communication experiments.

16 pages,7 figures

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Cited by in corpus (5)

• Symmetric Localizable Multipartite Quantum Measurements from Pauli Orbits
• Binarisation-loophole-free observation of high-dimensional quantum nonlocality
• Unlimited quantum correlation advantage from bound entanglement
• Quantum inputs in the prepare-and-measure scenario and stochastic teleportation
• On the characterization of partially entanglement breaking and annihilating channels