Journal
NPJ QUANTUM INFORMATION
Volume 5, Issue -, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41534-019-0166-7
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Funding
- CIFAR
- NSERC
- National Natural Science Foundation of China [11605005, 11875159, U1801661, 11805008, 11734002, 11374032]
- David and Lucile Packard Foundation
- NSF [DMR-1151208]
- Gordon and Betty Moore Foundations EPiQS Initiative [GBMF4304]
- Science, Technology and Innovation Commission of Shenzhen Municipality [ZDSYS20170303165926217, JCYJ20170412152620376]
- Guangdong Innovative and Entrepreneurial Research Team Program [2016ZT06D348]
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The Sachdev-Ye-Kitaev (SYK) model incorporates rich physics, ranging from exotic non-Fermi liquid states without quasiparticle excitations, to holographic duality and quantum chaos. However, its experimental realization remains a daunting challenge due to various unnatural ingredients of the SYK Hamiltonian such as its strong randomness and fully nonlocal fermion interaction. At present, constructing such a nonlocal Hamiltonian and exploring its dynamics is best through digital quantum simulation, where state-of-the-art techniques can already handle a moderate number of qubits. Here, we demonstrate a first step towards simulation of the SYK model on a nuclear-spin-chain simulator. We observed the fermion paring instability of the non-Fermi liquid state and the chaotic-nonchaotic transition at simulated temperatures, as was predicted by previous theories. As the realization of the SYK model in practice, our experiment opens a new avenue towards investigating the key features of non-Fermi liquid states, as well as the quantum chaotic systems and the AdS/CFT duality.
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