Recently, China University of Science and Technology has made many breakthrough achievements in the quantum field. According to reports from domestic media, Professor Li Chuanfeng’s research group at the school’s key laboratory for quantum information developed the first non-local quantum simulator and simulated the phenomenon of superluminality in the world of parity-time (PT).
This experiment fully demonstrates the important role of non-local quantum simulators in the study of quantum physics problems.
Quantum simulators are dedicated quantum computers that solve specific problems. This concept was first proposed by Feynman in 1981. Feynman thinks that nature is essentially following quantum mechanics. Only by following the device of quantum mechanics can it be better simulated. This mechanical device is a quantum simulator. In the current quantum simulator research, people pay more attention to its quantum acceleration capability. Generally, the more quantum bits a quantum simulator controls, the stronger its computing power.
The parity-time symmetry theory was proposed by the American physicist Bender in 2002 for quantum mechanics.
Under this theory, the quantum world is only a special case of the parity-time world. Professor Li Chuanfeng's research group at the Key Laboratory of Quantum Information at the Chinese University of Science and Technology successfully simulated the parity-time world.
Their approach is to distribute the entangled photon pair to two non-local quantum simulators located 25 meters apart from each other. The results show that using the quantum entanglement "spooky super-distance effect", the symmetry evolution of photons PT can make information More than 1.9 times the speed of light is transmitted from one laboratory to another. However, if you consider the entire system, the overall information transmission speed can not exceed the speed of light.
It is worth noting that Lei Fengwang (searching "Lei Feng Net" public concern) had previously reported that the Quantum Laboratory of the China University of Science and Technology has made a breakthrough in the development of semiconductor quantum chips and solid-state quantum memory.
Recommended reading:
HKUST’s quantum chip tells you that traditional PCs are being eliminated
China Successfully Launches the World's First Quantum Satellite "Mozi"