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Multimode entanglement in reconfigurable graph states using optical frequency combs.

Y Cai1,2, J Roslund1, G Ferrini1,3

  • 1Laboratoire Kastler Brossel, UPMC-Sorbonne Universités, CNRS, ENS-PSL Research University, College de France, CC74, 4 Place Jussieu, 75252 Paris, France.

Nature Communications
|June 7, 2017
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Summary
This summary is machine-generated.

Researchers developed a reconfigurable optical system for creating on-demand multimode entangled states. This breakthrough enhances quantum information processing and metrology by allowing flexible state generation without changing the experimental setup.

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Area of Science:

  • Quantum optics
  • Quantum information science

Background:

  • Multimode entanglement is crucial for quantum technologies.
  • Current methods require fixed experimental setups, limiting versatility and scalability.

Purpose of the Study:

  • To demonstrate an on-demand, reconfigurable system for generating multimode entangled states.
  • To overcome the limitations of fixed experimental configurations in quantum information processing.

Main Methods:

  • Utilized an intrinsically multimode quantum resource and homodyne detection.
  • Developed a method to reconfigure entangled states by adapting measurement processes.

Main Results:

  • Successfully constructed thirteen cluster states with varying sizes and connectivities.
  • Implemented a secret sharing protocol using the reconfigurable entangled states.
  • Enabled interrogation of quantum correlations for any multimode Gaussian state.

Conclusions:

  • The developed system offers enhanced versatility and scalability for quantum information processing.
  • On-demand quantum information tasks can be implemented by solely adjusting measurement strategies.
  • This work paves the way for more adaptable quantum computing and metrology platforms.