Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

Abstract

We report the experimental demonstration of two quantum networking protocols, namely quantum 1->3 telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in a high-quality two-photon hyperentangled Dicke state. The state resource is characterized using criteria based on multipartite entanglement witnesses. We explore the characteristic entanglement-sharing structure of a Dicke state by implementing high-fidelity projections of the four-qubit resource onto lower-dimensional states. Our work demonstrates for the first time the usefulness of Dicke states for quantum information processing.

4 pages + Supplementary Information, 6 figures; revised version: Accepted for publication in Phys. Rev. Lett

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• Multipartite Entanglement Accumulation in Quantum States: Localizable Generalized Geometric Measure
• Optimal witnessing of the quantum Fisher information with few measurements
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• Quantum network teleportation for quantum information distribution and concentration
• Uniform Decoherence Effect on Localizable Entanglement in Random Multi-qubit Pure States
• Optimal quantum control via genetic algorithms for quantum state engineering in driven-resonator mediated networks
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• Symmetric quantum states: a review of recent progress
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• Tomography from collective measurements
• Quantum Telecloning on NISQ Computers
• Inherent quantum resources in stationary spin chains
• Optimized Telecloning Circuits: Theory and Practice of Nine NISQ Clones
• $su(d)$-squeezing and many-body entanglement geometry in finite-dimensional systems
• Nonclassical resource for continuous variable telecloning with non-Gaussian advantage
• Deterministic carving of quantum states with Grover's algorithm
• Family of two-parameter multipartite entanglement measures
• Efficient quantum algorithm to construct arbitrary Dicke states