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Interconnection Networks for Scalable Quantum Computers

Nemanja Isailovic·Yatish Patel·Mark Whitney·John Kubiatowicz
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Abstract

We show that the problem of communication in a quantum computer reduces to constructing reliable quantum channels by distributing high-fidelity EPR pairs. We develop analytical models of the latency, bandwidth, error rate and resource utilization of such channels, and show that 100s of qubits must be distributed to accommodate a single data communication. Next, we show that a grid of teleportation nodes forms a good substrate on which to distribute EPR pairs. We also explore the control requirements for such a network. Finally, we propose a specific routing architecture and simulate the communication patterns of the Quantum Fourier Transform to demonstrate the impact of resource contention.

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Nemanja Isailovic, Yatish Patel, Mark Whitney, John Kubiatowicz. 2006-04-07. Interconnection Networks for Scalable Quantum Computers. https://arxiv.org/abs/quant-ph/0604048

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