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Quantum Simulation

Experimental transmission of quantum information using a superposition of causal orders

arXiv
Authors: Yu Guo, Xiao-Min Hu, Zhi-Bo Hou, Huan Cao, Jin-Ming Cui, Bi-Heng Liu, Yun-Feng Huang, Chuan-Feng Li, Guang-Can Guo, Giulio Chiribella

Year

2018

Paper ID

23270

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

N/A

Abstract

Communication in a network generally takes place through a sequence of intermediate nodes connected by communication channels. In the standard theory of communication, it is assumed that the communication network is embedded in a classical spacetime, where the relative order of different nodes is well-defined. In principle, a quantum theory of spacetime could allow the order of the intermediate points between sender and receiver to be in a coherent superposition. Here we experimentally realise a table-top simulation of this exotic possibility on a photonic system, demonstrating high-fidelity transmission of quantum information over two noisy channels arranged in a superposition of two alternative causal orders.

Why This Paper Matters

  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2018 reference point for readers tracking recent quantum research.
  • Communication in a network generally takes place through a sequence of intermediate nodes connected by communication channels.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1811.07526 [2] arXiv https://arxiv.org/abs/1811.07526 [3] Publisher https://arxiv.org/abs/1811.07526

Local Citation Graph (Related-Paper Links)

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