Multi-Party Quantum Key Distribution Using Variational Quantum Eigensolvers

The research paper introduces a novel approach to multi-party quantum key distribution using variational quantum eigensolvers (VQEs). The protocol aims to establish secure communication among multiple parties in a quantum network. The paper outlines a comprehensive framework incorporating quantum state preparation, VQE-based key generation, error correction, and privacy amplification circuits. Mathematical formulations guide the design of quantum gates, variational parameters, and error correction codes. The protocol utilizes quantum entanglement, VQE optimization, and classical operations for error correction and secure key extraction. The paper's experimental focus involves implementing the proposed protocol on a quantum computer, analyzing security metrics such as mutual information and min-entropy, and simulating circuit outcomes. The protocol uses variational quantum eigensolvers for multi-party quantum key distribution, offering optimization capabilities for generating shared secret keys. VQEs are scalable, accommodating various multi-party scenarios, and can be implemented on different quantum computing platforms, including gate-based and annealing-based computers.image