The new 20-millisecond milestone, however, could be just the breakthrough Afzelius' team was looking for. "This is a world record for a quantum memory based on a solid-state system, in this case a crystal. We have even managed to reach the 100 millisecond mark with a small loss of fidelity," Azfelius said. For their experiments, the researchers kept their crystals at temperatures of -273,15°C so as not to disturb the effect of entanglement. "We applied a small magnetic field of one thousandth of a Tesla to the crystal and used dynamic decoupling methods, which consist in sending intense radio frequencies to the crystal," said Antonio Ortu, a post-doctoral fellow in the Department of Applied Physics at UNIGE. "The effect of these techniques is to decouple the rare-earth ions from perturbations of the environment and increase the storage performance we have known until now by almost a factor of 40," he added. The result of this experiment could allow for the development of long-distance quantum telecommunications networks, though the researchers would still have to extend the storage time further.
There's been a lot of talk of innovation and helping the little guy through blockchain. But, huge resources and backing are needed in order to sustain a project and take it mainstream on a longer time horizon. Even with a brilliant technical team, excellent developers and a well-thought-out whitepaper and tokenomics ecosystem, the project won’t go anywhere. Unless, it's marketed on major outlets and pushed towards consumers consistently. This is an attention-based economy and it takes effort to capture mainstream attention and to keep it. Moreover, it will take a great deal of finance to develop VR technology that is high-quality, integrated into the many metaverses, cost-effective and marketed well. A small team might be able to conjure up a good initial project. But, they will likely need to partner up or hand off the project so it can become mainstream. Always assess who a project is affiliated with and what partnerships they have. This is a strong indication of how much they value their own project and also offers numerous other benefits for various scenarios.
In initial evaluations, the diffractive neural network introduced by this team of researchers achieved very promising results, as it was found to be highly flexible and applicable across a wide range of scenarios. In the future, it could thus be used to solve a variety of real-world problems, including image classification, wave sensing and wireless communication coding/decoding. Meanwhile, Cui and his colleagues will work on improving its performance further. "The prototype implemented in this work is based on a 5-layer diffractive neural network, each layer has 64 programmable neural networks, and the total number of nodes in the network is relatively low," Cui added. "At the same time, the operating frequency band of this network is lower, resulting in a larger size of the physical network. In our next studies, we plan to further increase the scale of the programmable neurons of the network, improve the network integration, reduce the size and form a set of intelligent computers with stronger computing power and more practicality for sensing and communications."
In this case, the cyberattackers were pretending to offer a key set of existing, legitimate packages for Azure. “It became apparent that this was a targeted attack against the entire @azure npm scope, by an attacker that employed an automatic script to create accounts and upload malicious packages that cover the entirety of that scope,” researchers said in a Wednesday posting. “The attacker simply creates a new (malicious) package with the same name as an existing @azure scope package, but drops the scope name.” Npm scopes are a way of grouping related packages together. JFrog found that besides the @azure scope, other popular package groups were also targeted, including @azure-rest, @azure-tests, @azure-tools and @cadl-lang. The researchers added, “The attacker is relying on the fact that some developers may erroneously omit the @azure prefix when installing a package. For example, running npm install core-tracing by mistake, instead of the correct command – npm install @azure/core-tracing.” The attacker also tried to hide the fact that all of the malicious packages were uploaded by the same author, “by creating a unique user per each malicious package uploaded,” according to JFrog.
Mathematical thinking is closely tied to what many mathematicians call mathematical maturity. In the words of UC Berkeley professor Anant Sahai, mathematical maturity refers to “comfort in solving problems step by step and maintaining confidence in your work even as you take steps forward.” In most mathematical problems, the solution is not immediately clear. A mathematically mature person finds it reasonable — and even satisfying — to make incremental progress and eventually reach a solution, even if they have no idea what it might be when they first begin. ... the ability to think mathematically will give you deeper insight into the intricacies of the data and how the problem is actually being solved. You might find yourself logically rearranging a program to make it more efficient, or recommending a specific data collection technique to obtain a sample which matches existing statistical methods. In doing so, you’ll expand your repertoire and thus contribute to a better data science workflow.
In theory, a vacuum is devoid of matter. In the presence of strong electric or magnetic fields, however, this void can break down, causing elementary particles to spring into existence. Usually, this breakdown only occurs during intense astrophysical events, but researchers at the UK’s National Graphene Institute at the University of Manchester have now brought it into tabletop territory for the first time, observing this so-called Schwinger effect in a device based on graphene superlattices. The work will be important for developing electronic devices based on graphene and other two-dimensional quantum materials. In graphene, which is a two-dimensional sheet of carbon atoms, a vacuum exists at the point (in momentum space) where the material’s conduction and valence electron bands meet and no intrinsic charge carriers are present. Working with colleagues in Spain, the US, Japan and elsewhere in the UK, the Manchester team led by Andre Geim identified a signature of the Schwinger effect at this Dirac point, observing pairs of electrons and holes created out of the vacuum.
Some risks are the same regardless of whether solutions are built with vendor-curated or upstream software; however it is the responsibility for maintenance and security of the code that changes. Let’s make some assumptions about a typical organization. That organization is able to identify where all of its open source comes from, and 85% of that is from a major vendor it works with regularly. The other 15% consists of offerings not available from the vendor of choice and comes directly from upstream projects. For the 85% that comes from a vendor, any security concerns, security metadata, announcements and, most importantly, security patches, come from that vendor. In this scenario, the organization has one place to get all of the needed security information and updates. The organization doesn’t have to monitor the upstream code for any newly discovered vulnerabilities and, essentially, only needs to monitor the vendor and apply any patches it provides.
Quote for the day:
"Leadership - leadership is about taking responsibility, not making excuses." -- Mitt Romney