The chip, which uses quantum communication algorithms “one thousand times smaller than current configurations,” was created by a group of researchers from the Nanyang University of Technology in Singapore (NTU Singapore).
According to a press release presenting the study published in Nature Photonics, this new chip may prove particularly useful in the context of security for various means of communication, from cash withdrawals from ATMs to online shopping. These technologies are not very secure today, and their communication can be intercepted.
The chip is only 3-4 mm wide and uses quantum communication algorithms and provides a higher level of security than existing standards, thanks to quantum key distribution (QKD). The chip integrates passwords into the information provided to it to form a secure quantum key. The same information, along with the entire password, is destroyed upon receipt, further enhancing security.
Moreover, their physical size is much smaller than existing standards, allowing them to be used in a much more diverse way. Indeed, modern quantum communication devices can be much larger and can range in size from a refrigerator to an entire room. In addition, the chip itself is made of industrial materials such as silicon, which also makes it easier to manufacture. This new device paves the way for more advanced encryption methods, especially for online transactions and electronic messages in general.
The importance of quantum technology in the context of online communications security is explained by Liu Ai Kun, a researcher at NTU, who leads a group that has achieved these results: “In today’s world, computer security is very important because most of our data is stored and transmitted digitally. Almost all digital platforms and repositories require users to enter passwords and biometric data, and so far they can be intercepted or decrypted. Quantum technology eliminates them because both the password and the information are integrated into the message being sent, forming a quantum key.”
This is the “future of communication security,” as Liu himself defines, and this new research is further stimulating the creation of such devices, which are becoming increasingly compact.
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