Deterministic generation of hybrid entangled states using quantum walks

• DOI: 10.48550/arxiv.2311.02419
• Publication Date: 2023-01-01
• Authors: Jaskaran Singh; Vikash Mittal
• Keywords: Quantum walk; Quantum teleportation

Recently, hybrid entanglement (HE), which involves entangling a qubit with coherent state, has demonstrated superior performance in various quantum information processing tasks, particularly key distribution [arXiv:2305.18906 (2023)]. Despite its theoretical advantages, the practical generation of these states laboratory been challenge. In this context, we introduce deterministic and efficient approach for generating HE using walks. Our method achieves remarkable fidelity 99.90 % just 20 time steps one-dimensional split-step walk. This represents significant improvement over prior approaches that yielded only probabilistically, often fidelities as low 80 %. scheme not provides robust solution to but also highlights unique advantage walks, thereby contributing advancement burgeoning field. Moreover, our is experimentally feasible current technology.