TITAN: A Distributed Large-Scale Trapped-Ion NISQ Computer
<|reference_start|>TITAN: A Distributed Large-Scale Trapped-Ion NISQ Computer: Trapped-Ion (TI) technology offers potential breakthroughs for Noisy Intermediate Scale Quantum (NISQ) computing. TI qubits offer extended coherence times and high gate fidelity, making them appealing for large-scale NISQ computers. Constructing such computers demands a distributed architecture connecting Quantum Charge Coupled Devices (QCCDs) via quantum matter-links and photonic switches. However, current distributed TI NISQ computers face hardware and system challenges. Entangling qubits across a photonic switch introduces significant latency, while existing compilers generate suboptimal mappings due to their unawareness of the interconnection topology. In this paper, we introduce TITAN, a large-scale distributed TI NISQ computer, which employs an innovative photonic interconnection design to reduce entanglement latency and an advanced partitioning and mapping algorithm to optimize matter-link communications. Our evaluations show that TITAN greatly enhances quantum application performance by 56.6% and fidelity by 19.7% compared to existing systems.<|reference_end|>
@article{chu2024titan:,
    title={TITAN: A Distributed Large-Scale Trapped-Ion NISQ Computer},
    author={Cheng Chu, Zhenxiao Fu, Yilun Xu, Gang Huang, Hausi Muller, Fan Chen,
  Lei Jiang},
    journal={arXiv preprint arXiv:2402.11021},
    year={2024},
    archivePrefix={arXiv},
    eprint={2402.11021},
    primaryClass={quant-ph cs.ET}
}