Comparative Study of Optical Quantum Swap Gates Using qINTERCONNECT

Abstract

In this study, we delve into optimizing optical quantum swap gate designs, which are crucial in the advancement of quantum computing. Using qINTERCONNECT, we conduct a comparative analysis of swap gate designs, including those based on equivalent circuits like CNOT gates and others utilizing dedicated architectures. Our aim is to compare the balance between operational efficiency and error tolerance in these varying designs, so as to measure their potential for scalability. Through simulations grounded in real-world fabrication parameters, we assess the fidelity and success probabilities of each design approach. Our findings indicate that while equivalent circuit-based designs are traditionally favored in other fields of quantum computing, dedicated swap gate architectures may offer enhanced robustness and scalability in optics. This study provides a comparative understanding of different swap gate designs, elucidating the relative merits and drawbacks of current designs, and offering insights that are relevant for practical applications in quantum computing.