Quantum computer-aided design: digital quantum simulation of quantum processors

• URL: http://arxiv.org/abs/2006.03070v3
• Date: Wed, 13 Oct 2021 14:29:23 GMT
• Title: Quantum computer-aided design: digital quantum simulation of quantum processors
• Authors: Thi Ha Kyaw, Tim Menke, Sukin Sim, Abhinav Anand, Nicolas P. D. Sawaya, William D. Oliver, Gian Giacomo Guerreschi, Al\'an Aspuru-Guzik
• Abstract summary: We show how one can design and test the performance of next-generation quantum hardware by using existing quantum computers. We focus on superconducting transmon processors as a prominent hardware platform. We compute the static and dynamic properties of individual and coupled transmons.
• Score: 0.4215938932388721
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: With the increasing size of quantum processors, sub-modules that constitute the processor hardware will become too large to accurately simulate on a classical computer. Therefore, one would soon have to fabricate and test each new design primitive and parameter choice in time-consuming coordination between design, fabrication, and experimental validation. Here we show how one can design and test the performance of next-generation quantum hardware -- by using existing quantum computers. Focusing on superconducting transmon processors as a prominent hardware platform, we compute the static and dynamic properties of individual and coupled transmons. We show how the energy spectra of transmons can be obtained by variational hybrid quantum-classical algorithms that are well-suited for near-term noisy quantum computers. In addition, single- and two-qubit gate simulations are demonstrated via Suzuki-Trotter decomposition. Our methods pave a promising way towards designing candidate quantum processors when the demands of calculating sub-module properties exceed the capabilities of classical computing resources.

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