TITAN: A Distributed Large-Scale Trapped-Ion NISQ Computer
CoRR(2024)
摘要
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
systems.
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