Effects of quantum noises on χ state-based quantum steganography protocol

Area of Science:

• Quantum communication
• Quantum information science
• Cryptography

Background:

• Quantum secure communication protocols typically assume noise-free channels.
• Quantum noise significantly degrades the security and reliability of quantum systems.
• Understanding noise impact is crucial for practical quantum communication.

Purpose of the Study:

• To analyze the performance of a χ state based steganography protocol under common quantum noises.
• To investigate the protocol's resilience to Amplitude Damping (AD), Phase damping (Phs), Bit Flip (BF), and Depolarizing (D) noise.
• To explore strategies for enhancing protocol performance in noisy quantum channels.

Main Methods:

• Mathematical analysis of a χ state based steganography protocol.
• Simulation of protocol performance under four types of quantum noise (AD, Phs, BF, D).
• Evaluation of noise impact on single and dual sender transmissions.

Main Results:

• The protocol shows least sensitivity to Amplitude Damping (AD) noise when only the initial transmission is affected.
• When both sender transmissions are affected by noise, specific noise combinations enhance protocol performance.
• Intentional addition of quantum noise, tailored to intensity, can improve protocol resilience.

Conclusions:

• The χ state based steganography protocol exhibits varying degrees of resilience to different quantum noises.
• Strategic introduction of quantum noise can be a viable method to boost protocol performance in compromised channels.
• This research provides insights into robust quantum communication system design.