Interconnection Networks for Scalable Quantum Computers

Details Interconnection Networks for Scalable Quantum Computers Interconnection Networks for Scalable Quantum Computers

2006-04-07

arxiv.org/abs/quant-ph/0604048v1

Physics

Quantum Physics

To appear in International Symposium on Computer Architecture 2006 (ISCA 2006)

Scientific paper

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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