Entanglement Distillation between Solid-State Quantum Network Nodes
| Autor: | Daniel J. Twitchen, Naomi H. Nickerson, Ronald Hanson, Sten J. Kamerling, Andreas Reiserer, Peter C. Humphreys, Norbert Kalb, Jacob Bakermans, Matthew Markham, Simon C. Benjamin |
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| Rok vydání: | 2017 |
| Předmět: |
Quantum Physics
Quantum network Multidisciplinary Spins Computer science TheoryofComputation_GENERAL FOS: Physical sciences Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Quantum entanglement 021001 nanoscience & nanotechnology Topology 01 natural sciences law.invention law 0103 physical sciences Key (cryptography) State (computer science) 010306 general physics 0210 nano-technology Quantum Physics (quant-ph) Entanglement distillation Distillation Quantum |
| Zdroj: | Science, 356(6341) |
| ISSN: | 0036-8075 |
| DOI: | 10.48550/arxiv.1703.03244 |
| Popis: | The potential impact of future quantum networks hinges on high-quality quantum entanglement shared between network nodes. Unavoidable real-world imperfections necessitate means to improve remote entanglement by local quantum operations. Here we realize entanglement distillation on a quantum network primitive of distant electron-nuclear two-qubit nodes. We demonstrate the heralded generation of two copies of a remote entangled state through single-photon-mediated entangling of the electrons and robust storage in the nuclear spins. After applying local two-qubit gates, single-shot measurements herald the distillation of an entangled state with increased fidelity that is available for further use. In addition, this distillation protocol significantly speeds up entanglement generation compared to previous two-photon-mediated schemes. The key combination of generating, storing and processing entangled states demonstrated here opens the door to exploring and utilizing multi-particle entanglement on an extended quantum network. |
| Databáze: | OpenAIRE |
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