Anonymous broadcasting of classical information with a continuous-variable topological quantum code

  title={Anonymous broadcasting of classical information with a continuous-variable topological quantum code},
  author={Nicolas C. Menicucci and Ben Q. Baragiola and Tommaso F. Demarie and Gavin K. Brennen},
  journal={Physical Review A},
Broadcasting information anonymously becomes more difficult as surveillance technology improves, but remarkably, quantum protocols exist that enable provably traceless broadcasting. The difficulty is making scalable entangled resource states that are robust to errors. We propose an anonymous broadcasting protocol that uses a continuous-variable surface-code state that can be produced using current technology. High squeezing enables large transmission bandwidth and strong anonymity, and the… 

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