A quantum router for high-dimensional entanglement. (20th March 2017)

• Record Type: Journal Article
• Authors: Erhard, Manuel; Malik, Mehul; Zeilinger, Anton
• Is Part Of: Quantum science and technology. Volume 2:Number 1(2017)
• Publication Date: 2017-03-20
• Subjects: entanglement -- high dimensional entanglement -- orbital angular momentum of light -- high dimensional entanglement router; Quantum theory -- Periodicals; Quantum theory; Periodicals; 530
• DOI: 10.1088/2058-9565/aa5917
• Languages: English
• ISSNs: 2058-9565

Abstract

Abstract: In addition to being a workhorse for modern quantum technologies, entanglement plays a key role in fundamental tests of quantum mechanics. The entanglement of photons in multiple levels, or dimensions, explores the limits of how large an entangled state can be, while also greatly expanding its applications in quantum information. Here we show how a high-dimensional quantum state of two photons entangled in their orbital angular momentum can be split into two entangled states with a smaller dimensionality structure. Our work demonstrates that entanglement is a quantum property that can be subdivided into spatially separated parts. In addition, our technique has vast potential applications in quantum as well as classical communication systems.