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This study introduces a more efficient quantum teleportation protocol for noisy entangled states. It achieves optimal fidelity with less entanglement, improving resource utilization in quantum networks.

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Area of Science:

  • Quantum Information Science
  • Quantum Communication

Background:

  • Quantum teleportation is vital for distributed quantum information processing.
  • Noisy entangled states and long-range communication pose significant challenges to fidelity.
  • Existing repeater-based protocols often rely on entanglement swapping with maximally entangled states.

Purpose of the Study:

  • To propose a more efficient quantum teleportation protocol for specific noisy states.
  • To achieve optimal teleportation fidelity with reduced entanglement consumption.
  • To enhance the utility of quantum resources in repeater-based quantum networks.

Main Methods:

  • Development of a novel protocol for quantum state transmission.
  • Analysis of teleportation fidelity for noisy entangled states.
  • Comparison with standard entanglement swapping protocols.

Main Results:

  • The proposed protocol achieves the same optimal fidelity as standard methods for certain noisy states.
  • The new protocol consumes less entanglement than conventional approaches.
  • Enhanced fidelity is maintained even with increased end-to-end noise.

Conclusions:

  • The developed protocol offers a more resource-efficient method for quantum state transmission.
  • This advancement is particularly beneficial for noisy, long-range quantum communication.
  • The findings promise improved practical applications of distributed quantum information protocols.