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Suppressing communication errors using quantum-enabled forward error correction.

Ivan A Burenkov1,2, N Fajar R Annafianto2, M V Jabir2

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This study introduces quantum-enabled forward error correction for optical communication, significantly improving error suppression beyond classical limits for ultra-low power quantum receivers.

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Area of Science:

  • Quantum Information Science
  • Optical Communications Engineering
  • Error Correction Coding

Background:

  • Noise is inherent in all optical communication measurements, necessitating error identification and correction for reliable data transmission.
  • Classical error correction techniques are standard in optical receivers but have not been applied to quantum measurement-based receivers.

Purpose of the Study:

  • To demonstrate how information from quantum measurements can be leveraged for efficient error correction in optical communication.
  • To introduce a novel quantum-enabled forward error correction protocol.

Main Methods:

  • The study developed and applied a quantum-enabled forward error correction protocol.
  • The protocol was tested on quadrature phase shift keying (QPSK) modulated signals.

Main Results:

  • The quantum-enabled protocol achieved over 80 dB error suppression compared to the raw symbol error rate.
  • It provided approximately 40 dB improvement in symbol error rates beyond the classical QPSK limit.
  • A symbol error rate below 10^-9 was achieved with only 11 photons per bit.

Conclusions:

  • This approach enables reliable quantum receivers for ultra-low power optical communications.
  • Utilizing quantum measurements for error correction enhances information capacity and scalability in optical links.