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Hybrid quantum-classical approach to correlated materials

zqyin 添加于 2015-10-21 10:07 | 1381 次阅读 | 0 个评论

作者
Bauer B, Wecker D, Millis AJ, Hastings MB, Troyer M
摘要
Recent improvements in control of quantum systems make it seem feasible to finally build a quantum computer within a decade. While it has been shown that such a quantum computer can in principle solve certain small electronic structure problems and idealized model Hamiltonians, the highly relevant problem of directly solving a complex correlated material appears to require a prohibitive amount of resources. Here, we show that by using a hybrid quantum-classical algorithm that incorporates the power of a small quantum computer into a framework of classical embedding algorithms, the electronic structure of complex correlated materials can be efficiently tackled using a quantum computer. In our approach, the quantum computer solves a small effective quantum impurity problem that is self-consistently determined via a feedback loop between the quantum and classical computation. Use of a quantum computer enables much larger and more accurate simulations than with any known classical algorithm, and will allow many open questions in quantum materials to be resolved once a small quantum computer with around one hundred logical qubits becomes available.
详细资料
- 关键词: quant-ph; cond-mat.str-el
- 文献种类:手稿
- 期卷页: 2015年
- 日期: 2015-10-14
- 发布方式: arXiv e-prints
- 备注:arXiv:1510.03859v1; 10 pages, 5 figures
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