Abstract：Astronomy is an ancient science. The earliest astronomical observations began when human first pointed their eyes to the sky and were amazed by the stars. For centuries, astronomers were limited to visible light. But visible light isn’t the only message the cosmos is sending us. With instrument development, astronomers have unlocked the ability to detect photons, neutrinos, cosmic rays, and gravitational waves. All these messengers providing new insights into the universe. In this talk, I will give a brief introduction to multi-messenger astronomy.

Abstract：Quantum computational advantage is a milestone in quantum computing field, which states that a specific problem can be efficiently solved by a quantum machine while it’s intractable for all classical computers. In this talk, I will show how we realized this objective, by a step-by-step manner. In 2020, we built “Jiuzhang” quantum computer which shows a quantum computational advantage of 10¹⁴. After that, we focused on applications on “Jiuzhang”, and explore quantum nonlinear optics to implement room-temperature quantum computing based on photons.