Shulou(Shulou.com)11/24 Report--

It is reported that since the advent of wireless telegraphy and vacuum tubes, electronic computing and communications have made great progress, and the processing power and memory levels of today's consumer devices are unimaginable decades ago.

However, with the computing and information processing equipment becoming smaller and more powerful, they are experiencing some basic limitations imposed by the laws of quantum physics. The future development prospect of this field may be closely related to photonics. Photonics is an optical basic concept parallel to electronics, which is similar to electronics in theory, but uses photons instead of electrons. Photonic devices may process data much faster than electronic devices, including quantum computers.

At present, the basic research in the field of photonics is still very active, but there is a lack of key equipment for practical application. The development of a new type of photon chip by the California Institute of Technology may represent a major breakthrough in this field. In particular, the photon quantum information processor makes it possible to generate and measure photon states, which previously could only be achieved with bulky and expensive laboratory equipment.

Based on the basic properties of photons, different kinds of photons are distinguished by their energy, momentum and polarization, and the photon states determined by these different characteristics are called optical quantum states.

This new type of photonic chip is based on lithium niobate, which has a wide range of applications in the optical field. It produces a so-called optical compression state on one side of the chip and is measured on the other side. Optical squeezing state, simply speaking, is to reduce the "noise" of light at the quantum level. it is reported that it is not until recent years that the optical squeezing state technology has been used to enhance the sensitivity survey of the Laser interference gravitational Wave Observatory (LIGO). The LIGO Observatory is a detection equipment for detecting gravitational waves using laser beams. if scientists use quantum devices based on light to process data, a low-noise light state is also very important.

Alireza Marandi, Associate Professor of Electronic Engineering and Applied Physics at the California Institute of Technology, said, "now that we have achieved the requirement that the quality of the quantum state exceeds the requirement of quantum information processing, which can be used to handle the scientific research field of large experimental devices, our research work marks an important step forward in the generation and measurement of photon states by integrated photonic circuits. We can use it to break through the limitations of many traditional nonlinear optical research, and even break many traditional assumptions. "

At the same time, Marandi points out that photonic chip technology shows the ultimate direction towards running quantum optical processors at terahertz clock rates. By contrast, it is thousands of times faster than the computing processor of Apple Notebook MacBook Pro. The technology could be put into practical applications in communications, sensing and quantum computing in the next five years.

Co-author and postdoctoral scholar Rajveer Nehra said: "Optics has always been one of the most promising ways to realize quantum computing because of its inherent advantages in scalability and ultrafast logic operation at room temperature. However, one of the main challenges of scalable applications is the generation and measurement of sufficient quantum states in nanophotonics. Our goal is how to solve this challenge. "

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.