A new paper from Pan Jia-Wei’s lab published in Nature shows that Micius has again successfully brought entanglement-based quantum cryptography to its original ground stations 1,200 km apart. It is this property that lies in the heart of the most secure forms of quantum cryptography, the entanglement-based quantum key distribution. Now, Chinese scientists report new progress in building what appears to be the first unbreakable information link between an orbiting craft and its terrestrial controllers, raising the odds that Beijing may one day possess a super-secure global communications network. He is a physicist at the University of Science and Technology of China, in Hefei, the capital of Anhui Province in east-central China. But this time the satellite sent simultaneous streams of entangled photons to the ground stations to establish a direct link between the two of them. This article has been amended to correct the time at which distribution machinery and attack prevention were developed, Harun Šiljak, Postdoctoral Research Fellow in Complex Systems Science for Telecommunications, Trinity College Dublin. Quantum encryption relies on entangled particles of light. In August 2016, from the Gobi Desert, China launched the world’s first satellite for testing the transmission of quantum information on light particles. The new paper doesn’t specify how the messages were transmitted in this instance, but in theory it could be done by optical fibre, another communications satellite, radio, or any other method they agree upon. None of the communication went through Micius. We believe strongly that we can and must do things differently. Scientists have now reported using this technology to reach a major milestone: Long-range secure communication you could trust even without trusting the satellite it runs through. What you need to know about the video home-security device, Covid-positive Rajasthan health minister goes on hospital jaywalk, Vishal and Arya's upcoming action thriller with Anand Shankar is titled Enemy, Mourinho praises Tottenham 'kids' as Scarlett becomes club's youngest ever player, ECLGS 2.0: Principal to be paid in 48 installments post 1-yr moratorium, 5 Common Pushup Mistakes to Avoid in Your Workouts, Want work from home permanently? It is this property that lies in the heart of the most secure forms of quantum cryptography, the entanglement-based quantum key distribution. Read the original article. It fired concentrated beams of laser light to relay the quantum signals between two telescopes built at ground stations in Delingha and Nanshan, in China, 700 miles apart. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition. This involved designing the machinery for distributing the keys and a mechanism for preventing malicious attacks, such as blinding the telescopes with other light signals. But both ground stations had to talk to and trust Micius as part of their communication systems and use it as a relay before establishing a link with each other. Comments are moderated and will be published only after the site moderator’s approval. A successful long-distance quantum communications link ushers in a new era of communication security. This also involved designing the machinery for distributing the keys and a mechanism for preventing malicious attacks, such as blinding the telescopes with other light signals. Chinese scientists have developed a quantum satellite ground station that is not only capable of sending ultra-secure messages anywhere in the world but also fits inside a family car. Researchers enlisted quantum physics to send a “secret key” for encrypting and decrypting messages between two stations 700 miles apart. As a result, Micius has been dubbed Sputnik for the ultra-paranoid. Quantum encryption relies on entangled particles of light. It only produced and distributed the encryption keys. Together we build journalism that is independent, credible and fearless. The satellite provided entangled photons as a convenient resource for the quantum cryptography and the two ground stations then used them according to their agreed protocol. The launch of Micius and the records set by the scientists and engineers building quantum communication systems with its help have been compared to the effect Sputnik had on the space race in the 20th century. 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Dr. Earl estimated that matching China’s quantum accomplishments in orbit will take the unclassified parts of the United States program another three years “and maybe longer, which is pretty concerning. A 2012 profile of Dr. Pan in Nature reported that he was in his early 30s when, in 2001, he set up China’s first laboratory for manipulating the quantum properties of photons. In August 2016, from the Gobi Desert, China launched the world’s first satellite for testing the transmission of quantum information on light particles. Please use a genuine email ID and provide your name. Down To Earth is a product of our commitment to make changes in the way we manage our environment, protect health and secure livelihoods and economic security for all. Pan Jian-Wei credited Edward Snowden’s 2013 disclosures of internet surveillance by western governments with prompting China to boost quantum cryptography research in order to create more secure means of communication.