Using Spectral Graph Theory to Map Qubits onto Connectivity-limited Devices
Using Spectral Graph Theory to Map Qubits onto Connectivity-limited Devices
复制标题
使用谱图理论将量子位映射到连接受限的设备上
DOI:
10.1145/3436752
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Harrow, Aram W.
中科院分区:
文献类型:
--
作者:
Lin, Joseph X.;Anschuetz, Eric R.;Harrow, Aram W.
We propose an efficient heuristic for mapping the logical qubits of quantum algorithms to the physical qubits of connectivity-limited devices, adding a minimal number of connectivity-compliant SWAP gates. In particular, given a quantum circuit, we construct an undirected graph with edge weights a function of the two-qubit gates of the quantum circuit. Taking inspiration from spectral graph drawing, we use an eigenvector of the graph Laplacian to place logical qubits at coordinate locations. These placements are then mapped to physical qubits for a given connectivity. We primarily focus on one-dimensional connectivities and sketch how the general principles of our heuristic can be extended for use in more general connectivities.
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