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On-demand, photonic entanglement synthesizer | Thamarasee Jeewandara

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Various types of entanglement. (A) Types of entanglement that can be generated by our entanglement synthesizer. (B) Types of entanglement that are actually generated and verified in this experiment. Orange spheres represent quantum modes. Blue arrows connecting two modes mean that the connected nodes can communicate with each other by use of the entanglement. Brown links connecting two modes mean that an entangling gate to generate cluster states is applied between these modes. Credit: Science Advances, doi: 10.1126/sciadv.aaw4530Various types of entanglement. (A) Types of entanglement that can be generated by our entanglement synthesizer. (B) Types of entanglement that are actually generated and verified in this experiment. Orange spheres represent quantum modes. Blue arrows connecting two modes mean that the connected nodes can communicate with each other by use of the entanglement. Brown links connecting two modes mean that an entangling gate to generate cluster states is applied between these modes. Credit: Science Advances, doi: 10.1126/sciadv.aaw4530

May 29, 2019 (Phys.org) -- Quantum information protocols are based on a variety of entanglement modes such as Einstein-Podolsky-Rosen (EPR), Greenberger-Horne-Zeilinger (GHZ) and other cluster states.

For on-demand preparation, these states can be realized with squeezed light sources in optics, but such experiments lack versatility as they require a variety of optical circuits to individually realize diverse states of entanglement.

In a recent study, Shuntaro Takeda and colleagues at the interdisciplinary departments of Applied Physics and Engineering in Japan addressed the shortcoming by developing an on-demand entanglement synthesizer.

Using the experimental setup, the physicists programmably generated entangled states from a single squeezed source of light.

(more)

READ MORE: Phys.org

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  • Created
    Wednesday, June 05 2019
  • Last modified
    Thursday, June 06 2019
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