Minimizing the Number of Teleportations in Distributed Quantum Computing Using Alloy
arxiv(2024)
摘要
This paper presents a novel approach for minimizing the number of
teleportations in Distributed Quantum Computing (DQC) using formal methods.
Quantum teleportation plays a major role in communicating quantum information.
As such, it is desirable to perform as few teleportations as possible when
distributing a quantum algorithm on a network of quantum machines. Contrary to
most existing methods which rely on graph-theoretic or heuristic search
techniques, we propose a drastically different approach for minimizing the
number of teleportations through utilizing formal methods. Specifically, the
contributions of this paper include: the formal specification of the
teleportation minimization problem in Alloy, the generalizability of the
proposed Alloy specifications to quantum circuits with n-ary gates, the
reusability of the Alloy specifications for different quantum circuits and
networks, the simplicity of specifying and solving other problems such as load
balancing and heterogeneity, and the compositionality of the proposed approach.
We also develop a software tool, called qcAlloy, that takes as input the
textual description of a quantum circuit, generates the corresponding Alloy
model, and finally solves the minimization problem using the Alloy analyzer. We
have experimentally evaluated qcAlloy for some of the circuits in the RevLib
benchmark with more than 100 qubits and 1200 layers, and have demonstrated that
qcAlloy outperforms one of the most efficient existing methods for most
benchmark circuits in terms of minimizing the number of teleportations.
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