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Secure Quantum Communications

Communications of the ACM

Two independent experiments published on the same day last August (August 12, 2016) have demonstrated the potential for quantum mechanics to improve the efficiency of secure data communications. The experiments mark a departure from the current mainstream proposal for quantum communications: quantum key distribution (QKD). First demonstrated in 1989, QKD was designed to provide classical communications channels with a more secure method for delivering keys through the use of quantum mechanics. "QKD uses a quantum channel that is able to transmit quantum states to establish a secure link between a sender and an intended receiver. But the information is actually transmitted over a classical channel, such as a telephone line," says Daniel Lum, postgraduate researcher at the University of Rochester, and the lead author on the paper in Physical Review A that describes one of the two new experiments on what its proponents call quantum data locking (QDL).


Why quantum satellites will make it harder for states to snoop

New Scientist

HAS the era of unhackable global communication begun? Last week, the world's first quantum communications satellite blasted into orbit from China's Gobi desert. Known as the Quantum Science Satellite (QUESS), it is Sputnik for the ultra-paranoid. The mission will test a way of transmitting impenetrable messages across vast distances. If successful, the next decade could see a boom in quantum satellites, resulting in a secure network that will protect its users from even the most savvy eavesdroppers.


China sets up first quantum communications network

The Japan Times

BEIJING – China has set up its first "commercial" quantum network in the northern province of Shandong, its latest step in advancing a technology expected to enable hack-proof communications. China says it is at the forefront of developing quantum technology. In August it sent its first "unbreakable" quantum code from an experimental satellite launched a year earlier. The Pentagon has called the satellite a "notable advance." Now the country's "first commercial quantum private communication network" has been set up for exclusive use by more than 200 government and official users in Shandong's provincial capital, Jinan, the official Xinhua News Agency said late on Tuesday.


How Are We Moving Toward the Transformative World of Quantum Network?

#artificialintelligence

Remember the bold claim made in 2017 that the quantum internet would be here by 2030. From then to now, experts are still figuring out some of the basic aspects of it--from how to overcome the challenges to when will it be around us. This article is a quick walk through the things obstructing and forwarding the deployment of quantum networking. Data transmission and data communication can be facilitated by building a network called the quantum network. It is similar to the classical style of communication and data exchange between different interconnected entities.


Singapore researchers tapping quantum cryptography to enhance network encryption

ZDNet

A team of engineers and researchers are working to tap quantum cryptography technology to enhance network encryption tools, so these can be ready to mitigate security risks when quantum computing becomes mainstream. Supported under National Research Foundation's Quantum Engineering Programme, the partnership aims to make advanced quantum cryptography accessible to the wider industry and drive the advancement of a technology that can lead to a new class of "quantum-resilient encryptors", the partners said in a joint statement Friday. They added these encryptors provided a highly scalable and cost-effective tool that could be deployed with minimal disruption to existing digital infrastructure. "This addresses the current limitations in the market [where] products are designed for point-to-point communication and are not scalable," they said. "This will also accommodate a larger number of users and benefit numerous applications, from financial services institutions, to government agencies, and hospitals."