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제  목 : Scalable quantum simulation of molecular vibronic spectra with trapped ions

연  사 : 김기환 교수(중국 칭화대학교)

일  시 : 2021년 3월 18일(목) 오후 4시 30분

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방번호: 170 974 2739

링크: https://skku-ict.webex.com/meet/chem

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Scalable quantum simulation of molecular vibronic spectra with trapped ions

Kihwan Kim

Tsinghua University

Quantum simulation of quantum chemistry is considered as one of the most promising practical applications of quantum devices. The trapped-ion system is a leading platform for the construction of universal quantum computers, offering long coherence time, high-fidelity quantum operations, and reliable state preparation and measurement. Vibrational degrees of freedom in trapped-ion systems have recently been gaining attention as a quantum resource, beyond the role as a mediator for entangling quantum operations on internal degrees of freedom, because of the large available Hilbert space. In this seminar, we will discuss how to use trapped ions to perform scalable simulation of molecular vibronic spectra [1,2]. In particular, recently we have renovated the trapped ion system to accommodate more vibrational modes with up to five ions and demonstrated the scalable phonon network [3]. We will discuss how to use the phonon network to realize scalable simulation of vibronic spectroscopy.
[1] J. Huh, et al., Boson sampling for molecular vi-bronic spectra, Nature Photon.9, 615 (2015)
[2] Y. Shen, et al., Quantum optical emulation of molecular vibronic spectroscopy using a trapped-ion device, Chem.Sci.9, 836 (2018).