Distillation of photon entanglement using a plasmonic metamaterial

Abstract

Plasmonics is a rapidly emerging platform for quantum state engineering with the potential for building ultra-compact and hybrid optoelectronic devices. Recent experiments have shown that despite the presence of decoherence and loss, photon statistics and entanglement can be preserved in single plasmonic systems. This preserving ability should carry over to plasmonic metamaterials, whose properties are the result of many individual plasmonic systems acting collectively, and can be used to engineer optical states of light. Here, we report an experimental demonstration of quantum state filtering, also known as entanglement distillation, using a metamaterial. We show that the metamaterial can be used to distill highly entangled states from less entangled states. As the metamaterial can be integrated with other optical components this work opens up the intriguing possibility of incorporating plasmonic metamaterials in on-chip quantum state engineering tasks.

References in corpus (9)

• Quantum Computing
• Two-Dimensional Material Nanophotonics
• Photonic quantum technologies
• Quantum Plasmonics
• Unusual Resonators: Plasmonics, Metamaterials, and Random Media
• Coherent perfect absorption in deeply subwavelength films in the single photon regime
• Experimental quantum process tomography of non trace-preserving maps
• Entanglement creation with negative index metamaterials
• Tunable negative permeability in a quantum plasmonic metamaterial

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• Optimal resource allocation for flexible-grid entanglement distribution networks
• Active plasmon injection scheme for subdiffraction imaging with imperfect negative index flat lens
• Probing decoherence in plasmonic waveguides in the quantum regime
• Quantum optical effective-medium theory for layered metamaterials
• Quantum random number generation using an on-chip nanowire plasmonic waveguide