The race for quantum technology is more and more intriguing. Google and IBM will develop quantum computers that might revolutionize computing at speeds now impossible.
A much-awaited capability of quantum technology lies in cryptography. With the proliferation of IoT and the subsequent 5G, it is essential to create secure channels.
By contrast, quantum channels that carry data have safety protocols built into the encrypted information. Each channel is different from each other, permitting the risk of interception throughout transmission to be reduced.
The safest and most widely used strategies to protect the confidentiality and integrity of data transmission are today based on symmetric cryptography. At the same time, much more reliable security is offered with a form of mathematically unbreakable cryptography called “one-time pad,” in which the information is encrypted utilizing a random key of the same size as the encrypted data.
Nanyang Technological University researchers in Singapore (NTU Singapore) have engineered a quantum chip 1,000 times smaller than present quantum configurations.
Led by Professor Liu Ai Qun of NTU’s School of Electrical and Electronic Engineering and associate professor Kwek Leong Chuan, the crew’s outcomes were published in Nature Photonics.
QKD employs quantum properties for the exchange of secret information, equivalent to an encrypted key, which can later be used to encrypt messages transmitted over an insecure channel.
The security of QKD is formed on fundamental laws of nature and physics that are invulnerable to increasing computing energy, new attack algorithms, or quantum computer systems.