Quantum Key Distribution, or QKD, enables two remote parties, “Alice” and “Bob”, who are connected by a passive optical link to securely generate secret key material. Single-photon sources (SPSs) and single-photon detectors (SPDs) are key devices for enabling practical quantum key distributions (QKDs). Single photon generation is necessary for secure quantum transmission; …
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Criminals, terrorists and military have been using tunnels since long time to evade detection as surface based detection methods are ineffective underground . Indian Border Security Force (BSF) troopers in Nov 2020 discovered an underground tunnel on the international border at Regal area in J&K`s Samba district, officials said. As …
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Renewable energy is at the centre of the transition to a less carbon-intensive and more sustainable energy system. Renewables have grown rapidly in recent years, accompanied by sharp cost reductions for solar photovoltaics and wind power in particular. The future development of wind power presents a significant opportunity in terms …
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Fiber optical circulators are used to separate optical signals that travel in opposite directions in an optic fiber in order to complete bidirectional transmission. Optical circulators are also known as non-reciprocal optics, which means when the light travels in the opposite direction, changes in the light properties are not reversed. …
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Electronics has revolutionized our society by providing many devices e.g. laptops, palm pilots, digital cameras, household robots, etc. Every electronic system or device needs electric power to operate, whether it is from walled AC supply or a battery. This electric power cannot be stored infinitely in any rechargeable device like …
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Chemists who are trained in synthesis use their skills to create new forms of matter. They synthesize compounds not just because they are new: the design and preparation of these new compounds leads to numerous applications in pharmaceuticals, materials, detection, energy utilization and storage, and insights into biological systems. Synthesis …
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Energetic materials and munitions are used across DoD in mission critical applications such as rockets, missiles, ammunition, and pyrotechnic devices. In these applications, energetic materials and munitions must perform as designed to ensure success in both training and combat operations. Every time a gun fires, lead leaches into the air. …
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As the 21st Century battlefield becomes increasingly complex and asymmetrical, military forces are striving to harness network technology to gain an operational advantage, by transforming traditional linear command structures and linking sensors, unmanned vehicles, command posts and ground troops to achieve decision superiority for full spectrum dominance. Network Centric …
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DARPA’s Defense Sciences Office (DSO)—whose mission is to identify and pursue high-risk, high-payoff research initiatives across a broad spectrum of science and engineering disciplines—launched Disruptioneering in Spring 2017 which pushes for faster identification and exploration of bold and risky ideas with the goal of accelerating scientific discovery. The goal of …
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More than 248 million people have been reported to be infected by the novel coronavirus globally and 5 million have died, according to a Reuters tally. From herpes and legionnaires’ disease in the 1970s, to AIDS, Ebola, the severe acute respiratory syndrome (SARS), and now Covid-19, contagious diseases continue …
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