Large-scale photonic network with squeezed vacuum states for molecular vibronic spectroscopy

Zhu，Hui Hui1; Sen Chen，Hao2; Chen，Tian2; Li，Yuan1; Luo，Shao Bo3; Karim，Muhammad Faeyz1; Luo，Xian Shu4; Gao，Feng4; Li，Qiang4; Cai，Hong5; Chin，Lip Ket6; Kwek，Leong Chuan1,7; Nordén，Bengt8; Zhang，Xiang Dong2; Liu，Ai Qun1,9

2024-12-01

10.1038/s41467-024-50060-2

Nature Communications   影响因子和分区

2041-1723

Although molecular vibronic spectra generation is pivotal for chemical analysis, tackling such exponentially complex tasks on classical computers remains inefficient. Quantum simulation, though theoretically promising, faces technological challenges in experimentally extracting vibronic spectra for molecules with multiple modes. Here, we propose a nontrivial algorithm to generate the vibronic spectra using states with zero displacements (squeezed vacuum states) coupled to a linear optical network, offering ease of experimental implementation. We also fabricate an integrated quantum photonic microprocessor chip as a versatile simulation platform containing 16 modes of single-mode squeezed vacuum states and a fully programmable interferometer network. Molecular vibronic spectra of formic acid and thymine under the Condon approximation are simulated using the quantum microprocessor chip with high reconstructed fidelity (> 92%). Furthermore, vibronic spectra of naphthalene, phenanthrene, and benzene under the non-Condon approximation are also experimentally simulated. Such demonstrations could pave the way for solving complicated quantum chemistry problems involving vibronic spectra and computational tasks beyond the reach of classical computers.

SCI

英语

其他

2-s2.0-85198825079

Scopus

1.Quantum Science and Engineering Centre (QSec),Nanyang Technological University,Singapore,Singapore
2.Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements of Ministry of Education,School of Physics,Beijing Institute of Technology,Beijing,China
3.School of Microelectronics,Southern University of Science and Technology,Shenzhen,China
4.Advanced Micro Foundry,Singapore,Singapore
5.Institute of Microelectronics,A*STAR (Agency for Science,Technology,and Research),Singapore,Singapore
6.Department of Electrical Engineering,City University of Hong Kong,Hong Kong
7.Centre for Quantum Technologies,National University of Singapore,Singapore,Singapore
8.Department of Chemistry and Chemical Engineering,Chalmers University of Technology,Gothenburg,Sweden
9.Institute of Quantum Technology (IQT),The Hong Kong Polytechnic University,Hong Kong

Zhu，Hui Hui,Sen Chen，Hao,Chen，Tian,et al. Large-scale photonic network with squeezed vacuum states for molecular vibronic spectroscopy[J]. Nature Communications,2024,15(1).

Zhu，Hui Hui.,Sen Chen，Hao.,Chen，Tian.,Li，Yuan.,Luo，Shao Bo.,...&Liu，Ai Qun.(2024).Large-scale photonic network with squeezed vacuum states for molecular vibronic spectroscopy.Nature Communications,15(1).

Zhu，Hui Hui,et al."Large-scale photonic network with squeezed vacuum states for molecular vibronic spectroscopy".Nature Communications 15.1(2024).