BEIJING, Dec 28 (Xinhua) — British and Danish scientists say they have for the first time implemented the “instant transmission” of information between two computer chips, a move that could lead to a safer “quantum network”. Experts from the University of Bristol and the University of Technology in Denmark have used the physical phenomenon known as “quantum entanglement” for the first time to “send data in an instant”.
Computer chips do not require an electrical or physical connection to transmit information, because quantum entanglement allows particles to communicate instantly over long distances.
Researchers at the University of Bristol say the technology has a wide range of uses in quantum computing and networking because it changes the state of one particle and the state of another automatically changes.
The joint research team from the two universities said their research could pave the way for quantum Internet “to protect information from malicious attacks.”
Specially designed programmable circuits created by researchers inside the chip can produce light particles.
These particles use quantum entanglement to “instantly transmit” between different chips for instant communication.
The team achieved a 91% success rate in allowing light particles to transmit information between specially programmed computer chips.
“Between the two chips in the lab, we were able to demonstrate high-quality entanglement links,” said Dan Llewellyn, co-author of the study. “
He says the new research is important because technologies such as quantum computers and the Internet rely on “quantum information”.
“Information is encoded in a single particle pair, making it difficult to control and measure,” Luerin said.
Researchers at the University of Bristol were able to connect different chips using quantum entanglement, and they were able to manipulate one particle, triggering a change in the particle pair of another particle located in another chip
The equipment developed by Luerin and his team is capable of generating and manipulating individual particle pairs in programmable circuits.
They developed a chip that encodes quantum information into the light generated by the circuit, and then they can process it efficiently.
The team says instant an instant transmission of information can be used not only for quantum communication, but also for quantum computing.
“However, the use of quantum entanglement to establish communication links between two chips in the lab has proved challenging,” they said in a statement. “
But they say their new process, which produces higher-quality, faster quantum circuits, is one of the most efficient to date.
They also demonstrated other functions of the circuit, such as “switching”, a process required for a quantum network to function properly.
The team also demonstrated a process associated with photon states — needed to develop quantum Internet and quantum computers.
This is an important step in developing “more complex quantum circuits for quantum computing and communication,” Luerin said.
Dr Jianwei Wang, lead author of the study, said: “The combination of quantum photonic devices and classic electronic control systems will open the door to a fully chip-based CMOS-compatible quantum communication and information processing network. “
The study was published in the journal Nature Physics. (Author/Frost Leaf)