Ion-Based Quantum Computing Hardware: Performance and End-User Perspective
arxiv(2024)
摘要
This is the second paper in a series of papers providing an overview of
different quantum computing hardware platforms from an industrial end-user
perspective. It follows our first paper on neutral-atom quantum computing.
In the present paper, we provide a survey on the current state-of-the-art in
trapped-ion quantum computing, taking up again the perspective of an industrial
end-user. To this end, our paper covers, on the one hand, a comprehensive
introduction to the physical foundations and mechanisms that play an important
role in operating a trapped-ion quantum computer. On the other hand, we provide
an overview of the key performance metrics that best describe and characterise
such a device's current computing capability. These metrics encompass
performance indicators such as qubit numbers, gate times and errors, native
gate sets, qubit stability and scalability as well as considerations regarding
the general qubit types and trap architectures. In order to ensure that these
metrics reflect the current state of trapped-ion quantum computing as accurate
as possible, they have been obtained by both an extensive review of recent
literature and, more importantly, from discussions with various quantum
hardware vendors in the field. We combine these factors and provide - again
from an industrial end-user perspective - an overview of what is currently
possible with trapped-ion quantum computers, which algorithms and problems are
especially suitable for this platform, what are the relevant end-to-end wall
clock times for calculations, and what might be possible with future
fault-tolerant trapped-ion quantum computers.
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