The breakthrough of China scientists in the frontier field of quantum simulation has been published online in the international academic journal Nature. Feng Miao Cooperation Team of Nanjing University? Components of the world's atoms? In this way, two pairs of atoms in the graphene layer rotate at a special angle of 180 degrees to +0.75 degrees, and a new quantum material is developed. Quantum melting was observed for the first time in international physics by changing the vertical electric field. Intermediate state? The evolution mechanism of this quantum intermediate state is revealed. The innovation of this important theoretical mechanism is expected to be applied to the development of high-density, high-harmonic and readable solid-state quantum simulators in the future, simulating the evolution of complex systems such as biological neural networks and chemical reaction systems, and being used for the development of brain-like artificial intelligence technology and the research and development of new drugs.

The system can be used for further quantum simulation research, which lays a foundation for understanding the abnormal transport phenomenon in the strongly correlated Fermi system. More than 80 years ago, Landau put forward the two-fluid theory and predicted that entropy or temperature would propagate in superfluid in the form of waves. He named it? The second sound? . This phenomenon only occurs in superfluids. Superconductivity refers to the resistance that current cannot flow in superconductors. Flow means that superfluid can flow without resistance. Superflow is a macroscopic quantum phenomenon. The phenomenon of entropy wave secondary transfer has been observed in the system including liquid helium and ultra-cold atoms, but the power of this transfer has never been measured.

The core goal of quantum simulation is to use the precise control of artificial quantum system to effectively simulate some basic quantum rules that are difficult to control under complex realistic conditions, so as to provide effective solutions for important physical problems that classical computers cannot solve, and provide ideas for discovering and verifying the universal laws of physics. The dynamic transport coefficient of Fermi superfluid with strong interaction is obtained for the first time, which can fully characterize the dynamic behavior of Fermi superfluid at low energy. This general rule is expected to be extended to other Fermi subsystems with strong interaction, such as neutron stars and quark-gluon plasma. The research team also observed the critical divergence of entropy wave attenuation rate and thermal conductivity near superfluid phase transition.