"Next Big Future" - 3 new articles
- Broad Group is famous worldwide for its factory mass produced skyscrapers but revenue from purifying China's polluted air will be multiplying
- Dynamical Casimir effect in a Josephson metamaterial
- Lockheed Martin Talks about the humanity game changer that is Dwave Systems Quantum Computer
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Broad Group is famous worldwide for its factory mass produced skyscrapers but revenue from purifying China's polluted air will be multiplying
1. Forbes reports on the status of the China Broad Group 220 story SkyCity skyscraper project
Called 'Sky City', the proposed tower in Changsha is designed to house over 30,000 people in a structure with 104 elevators that tops out at 838 meters, taller than Dubai's Burj Tower. And this giant, 9.0 earthquake-proof structure was to be put up in 90 days. Yes, days. The cost was reportedly a steal: $1,500 per square meter, compared to $15,000 for the Burj Tower.
So where is the world's tallest building? Apparently still in the factory in pieces. According to Oriental Outlook magazine, authorities in Changsha have withheld permits for Sky City because of concerns over safety, congestion and environmental impact. Broad signed an agreement last June with Wangcheng district government that budgeted the project at up to RMB4 billion ($645 million). This plan was based on completion in January. Broad had already acquired the land for RMB389 million ($62 million) Now it seems that Broad needs to argue its case again to regulators. Oriental Outlook reports that local experts aren't too convinced by the technology and concerned about traffic congestion in the area (those 30,000 residents). There's also the copycat problem: other districts in Changsha (population: 7 million) may want their own skyscrapers, making it even harder for urban planners. Presumably Broad would be only too happy to oblige. After all, it's a quick turnaround. Based in Changsha, central China, Broad ('Yuanda') is known for making giant air-con systems; its founder and CEO Zhang Yue has built an estimated fortune of $860 million 2. Despite being relatively new to the air purifier market, Hunan-based Broad Group has ambitious plans to dominate the sector and counter health-threatening pollution with its heat-recovery technology. Read more » Dynamical Casimir effect in a Josephson metamaterial
Researchers showed the dynamical Casimir effect using a Josephson metamaterial embedded in a microwave cavity. They showed that under certain conditions, real photons are generated in pairs, a The researchers also showed that photons at frequencies symmetric with respect to half the modulation frequency of the cavity are generated in pairs.
Lähteenmäki describes next steps in their research. "Instead of a continuous wave pump, we could have a straight flux line and feed it with a step-like flux pulse," Lähteenmäki says. "This would allow the creation of an analogue to a black hole event horizon. In fact," he adds, "we're hoping to create an artificial event horizon in a metamaterial similar to the one used in our current research and study Hawking radiation originating from it. Also, it would be nice to be able to run experiments on Bell's inequalities."
His personal interests, Lähteenmäki says, are fundamental quantum mechanics, quantum information and properties of the vacuum itself. "The obvious applications for these devices," he notes, "come from quantum computation, and in general they may serve as components for multitude of sensitive measurements. I believe the interest towards low loss metamaterials is high and the field is just getting started. Our results show that these devices have potential and can offer a fruitful platform for many experiments and perhaps practical devices as well. Improving such devices – especially eliminating the losses and making them function more robustly – would allow them to create a general purpose component suitable for creating entangled microwave photon pairs, low noise amplification, squeezed vacuum, and other functions that can be very useful for quantum computation and general experiments in the quantum mechanics and in studying the vacuum." Another possibility, Lähteenmäki adds, is to create a metamaterial which would allow them to stop signal propagation in the material entirely and allow them to resume it later. "This would act as a kind of slow light memory that would store the photon for later use." Other areas of research might benefit from their study as well, Lähteenmäki says. "There are some connections to cosmology, the big bang, cosmic inflation, and other areas. These metamaterials could possibly offer an analogy to such events and serve as a platform to simulate the evolution of such conditions. Who knows," he ponders, concluding that "perhaps we'd find clues to the mysteries of dark matter and dark energy or other fundamental questions from such systems." The zero-point energy stored in the modes of an electromagnetic cavity has experimentally detectable effects, giving rise to an attractive interaction between the opposite walls, the static Casimir effect. A dynamical version of this effect was predicted to occur when the vacuum energy is changed either by moving the walls of the cavity or by changing the index of refraction, resulting in the conversion of vacuum fluctuations into real photons. Here, we demonstrate the dynamical Casimir effect using a Josephson metamaterial embedded in a microwave cavity at 5.4 GHz. We modulate the effective length of the cavity by flux-biasing the metamaterial based on superconducting quantum interference devices (SQUIDs), which results in variation of a few percentage points in the speed of light. We extract the full 4 × 4 covariance matrix of the emitted microwave radiation, demonstrating that photons at frequencies symmetrical with respect to half of the modulation frequency are generated in pairs. At large detunings of the cavity from half of the modulation frequency, we find power spectra that clearly show the theoretically predicted hallmark of the Casimir effect: a bimodal, "sparrow-tail" structure. The observed substantial photon flux cannot be assigned to parametric amplification of thermal fluctuations; its creation is a direct consequence of the noncommutativity structure of quantum field theory. Read more » Lockheed Martin Talks about the humanity game changer that is Dwave Systems Quantum Computer
Lockheed Martin and scientists at USC think about D-Wave Quantum Computer technology.
Here is a quote from Greg Tallant, Research Engineering Manager, Flight Control & VMS Integration – FW, Advanced Development Programs, Lockheed Martin Aeronautics Company in the video -
It's a game changer for the corporation, it's a game changer for our customers, and ultimately it's a game changer for humanity. Computationally this is the equivalent of the Wright brothers at Kitty Hawk. Read more » More Recent Articles
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