Demonstrating Quantum Computation for Quasiparticle Band Structures

• URL: http://arxiv.org/abs/2307.14607v1
• Date: Thu, 27 Jul 2023 03:45:05 GMT
• Title: Demonstrating Quantum Computation for Quasiparticle Band Structures
• Authors: Takahiro Ohgoe, Hokuto Iwakiri, Masaya Kohda, Kazuhide Ichikawa, Yuya O. Nakagawa, Hubert Okadome Valencia, and Sho Koh
• Abstract summary: We demonstrate the first-principles calculation of a quasiparticle band structure on actual quantum computers. This is achieved by hybrid quantum-classical algorithms in conjunction with qubit-reduction and error-mitigation techniques.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Understanding and predicting the properties of solid-state materials from first-principles has been a great challenge for decades. Owing to the recent advances in quantum technologies, quantum computations offer a promising way to achieve this goal. Here, we demonstrate the first-principles calculation of a quasiparticle band structure on actual quantum computers. This is achieved by hybrid quantum-classical algorithms in conjunction with qubit-reduction and error-mitigation techniques. Our demonstration will pave the way to practical applications of quantum computers.

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