Security of modified Ping-Pong protocol in noisy and lossy channel

Abstract

The "Ping-Pong" (PP) protocol is a two-way quantum key protocol based on entanglement. In this protocol, Bob prepares one maximally entangled pair of qubits, and sends one qubit to Alice. Then, Alice performs some necessary operations on this qubit and sends it back to Bob. Although this protocol was proposed in 2002, its security in the noisy and lossy channel has not been proven. In this report, we add a simple and experimentally feasible modification to the original PP protocol, and prove the security of this modified PP protocol against collective attacks when the noisy and lossy channel is taken into account. Simulation results show that our protocol is practical.

arXiv comment7 pages, 2 figures, published in scientific reports

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• Ping-pong quantum key distribution with trusted noise: non-Markovian advantage
• Decoherence can help quantum cryptographic security
• Security-proof framework for two-way Gaussian quantum-key-distribution protocols
• Detector blinding attacks on counterfactual quantum key distribution
• How Secure Are Two-Way Ping-Pong and LM05 QKD Protocols under a Man-in-the-Middle Attack?
• Dimensional advantage in secure information trading via the noisy dense coding protocol
• A general scheme for information interception in the ping pong protocol
• Mixed basis quantum key distribution with linear optics
• Security proof of the two-way quantum secure direct communication with channel loss and noise
• Security of deterministic key distribution with higher-dimensional systems