https://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. How can we protect communications against eavesdropping if we don't trust the devices used in the process? This is one of the main questions in quantum cryptography research. Researchers at the University of Basel and ETH Zurich have succeeded in laying the theoretical groundwork for a communication protocol that guarantees 100% privacy. https://phys.org/news/2020-06-adding-noise.html Quantum Physics Fri, 12 Jun 2020 08:06:13 EDT news511167969 Researchers at the University of Science and Technology of China have recently introduced a new satellite-based quantum-secure time transfer (QSTT) protocol that could enable more secure communications between different satellites or other technology in space. Their protocol, presented in a paper published in Nature Physics, is based on two-way quantum key distribution in free space, a technique to encrypt communications between different devices. https://phys.org/news/2020-05-scheme-satellite-based-quantum-secure.html General Physics Wed, 27 May 2020 09:30:02 EDT news509789793 A scientific paper published in 1985 was the first to report a burgeoning hole in Earth's stratospheric ozone over Antarctica. Scientists determined the cause to be ozone-depleting substances—long-lived artificial halogen compounds. Although the ozone-destroying effects of these substances are now widely understood, there has been little research into their broader climate impacts. https://phys.org/news/2020-01-ozone-depleting-substances-late-20th-century-arctic.html Earth Sciences Mon, 20 Jan 2020 11:00:05 EST news498722841 The ability to securely transmit information over the internet is extremely important, but most of the time, eavesdroppers can still generally determine who the sender and receiver are. In some highly confidential situations, it is important that the sender's and receiver's identities remain anonymous. https://phys.org/news/2019-08-anonymous-protocol-quantum-networks.html Quantum Physics Wed, 21 Aug 2019 09:31:16 EDT news485582217 In collaboration with colleagues from Opole University in Poland, researchers at Horst Görtz Institute for IT Security (HGI) at Ruhr-Universität Bochum (RUB) have demonstrated that the internet protocol IPsec is vulnerable to attacks. The internet key exchange protocol IKEv1, which is part of the protocol family, has vulnerabilities that enable potential attackers to interfere with the communication process and intercept specific information. https://phys.org/news/2018-08-gaps-internet-protocol-ipsec.html Security Wed, 15 Aug 2018 07:16:27 EDT news453536176 How to reliably transfer quantum information when the connecting channels are impacted by detrimental noise? Scientists at the University of Innsbruck and TU Wien (Vienna) have presented new solutions to this problem. https://phys.org/news/2017-03-outwit-noise-quantum.html Quantum Physics Wed, 29 Mar 2017 08:52:10 EDT news409996321 (Phys.org)—The relationship between communication complexity problems, Bell nonlocal correlations and the advantage of quantum over classical strategies has long been recognized, but has been confirmed in only two problems. Recently, however, scientists at University of Cambridge, University of Amsterdam, CWI, QuSoft, Gdansk University, Gdansk University of Technology, Adam Mickiewicz University, and Jagiellonian University employed a two-part method based on port-based teleportation – a scheme of quantum teleportation where a receiver has multiple (N) output ports and obtains the teleported state by merely selecting one of the N ports1,2. The researchers used the quantum protocol based on the given communication complexity game to construct a set of quantum measurements on a maximally entangled state to show that any large advantage over the best known classical strategy makes use of Bell nonlocal correlations. In so doing, the researchers assert, they have provided the missing link to the fundamental equivalence between Bell nonlocality and quantum advantage. Moreover, their results have significant implications for classical information processing and the development of more efficient teleportation protocols. https://phys.org/news/2016-06-quantum-classical-bell-nonlocality-universally.html Quantum Physics Tue, 14 Jun 2016 09:30:01 EDT news385094893 (Phys.org)—Quantum key distribution (QKD) may one day allow for nearly perfectly secure data communication on a large scale, but before this can happen, QKD networks must extend across distances that are large enough to connect cities and even span continents. Currently, QKD links are limited to about 400 km due to optical fiber losses, and these links can be extended using quantum repeaters, which are, however, challenging to implement at the moment. https://phys.org/news/2016-01-intercity-quantum-key-method-outperforms.html Quantum Physics Fri, 08 Jan 2016 09:30:02 EST news371452236 America's plain old telephone network is rapidly being overtaken by new technology, putting US regulators in a quandary over how to manage the final stages of transformation. https://phys.org/news/2013-11-eyes-phase-out-network.html Telecom Fri, 29 Nov 2013 04:09:24 EST news304920540 TCP, the transmission control protocol, is one of the core protocols governing the Internet: If counted as a computer program, it's the most widely used program in the world. https://phys.org/news/2013-07-automatically-tcp-congestion-control-algorithms.html Computer Sciences Thu, 18 Jul 2013 14:30:01 EDT news293375378 One of the many promising applications of quantum mechanics in the information sciences is quantum key distribution (QKD), in which the counterintuitive behavior of quantum particles guarantees that no one can eavesdrop on a private exchange of data without detection. https://phys.org/news/2013-05-quantum-encryption.html Quantum Physics Tue, 21 May 2013 07:27:57 EDT news288340062 (Phys.org)—Intruders of the break-in and snooping variety have their work cut out for them by just picking up wireless signals that are broadcast by utility meters, say researchers from the University of South Carolina at Columbia, IEEE and Rutgers. As with many other technological advances that bring new pathways for criminals, advances in meters have created concerns about intrusions. Millions of analogue meters to measure water, gas and electricity consumption have been replaced by automated meter reading (AMR) in the U.S. The newer method enables devices to broadcast readings by radio every 30 seconds for utility company employees to read as they walk or drive around with a receiver. https://phys.org/news/2012-10-automated-meter-life-easy-intruders.html Computer Sciences Sat, 20 Oct 2012 06:30:01 EDT news269931303 (AP) -- Apple Inc. is allowing iPhone owners to use Internet calling services over cellular networks. https://phys.org/news/2010-01-apple-voip-3g-networks-iphone.html Consumer & Gadgets Fri, 29 Jan 2010 07:40:01 EST news183971757 The University of Colorado at Boulder is working with NASA to develop a new communications technology now being tested on the International Space Station, which will extend Earth's Internet into outer space and across the solar system. https://phys.org/news/2009-07-space-internet-international-station.html Space Exploration Mon, 06 Jul 2009 13:59:55 EDT news166107555