Physicists are developing a way to send secure messages using quantum memory

Quantitative future

Physicists from the University of Science and Technology in China and the Nanjing Post and Telecommunications University have developed a means to achieve safe, direct quantum contact with quantum memory and shortened the QSDC, and published the results of their experience in the journal Physical Review Latres.

When they get closer to the quantitative world, things become more blurry and difficult to understand. Quantum physics at its core deals with "the physics of small objects", and its theories and applications describe some particle behavior. One of these applications is quantum communication, which involves the exchange of information using particles Quantum.

QSDC is a secure form of quantum communication, commonly known as quantum cryptography. "Quantum communication provides absolute safety, which has helped develop it extensively in the past 30 years, "The QSDC protocols rely on fiber-generated lines to transmit information, but these lines are limited to certain limitations, but using quantum memory, these can be penetrated Limitations.

Long-term quantum communication

As quantum communication becomes safer, physicists are developing ways to expand it. This process will require quantum memory to control the efficient transmission of information in quantum networks in the future. One of the tools on which quantum memory relies is by using interlocking photons. The particles will be stored in order to create a mismatch between discrete memories.

The researchers explained the steps required in the QSDC protocol, which consisted of generating interlacements, obtaining a secure channel, the ability to distribute them, storing them, and finally coding the interconnected photons. To go beyond the usual difficulty in decoding entangled photons, the researchers chose an alternative approach that is easier to apply.

While the researchers have been able to use QSDC effectively, they also hope to expand it, perhaps up to 100 km, if not more. Since both the quantum quantum transition and quantum interconnect have demonstrated their ability to connect such distances, QSDC applications are important as they are widely used in satellites and globally to ensure safe transmission of information around the world.

Sources: Phys.org, Physical Review Letters