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Category: quantum physics – Page 984

China’s Quantum Satellite Next Month to Make China Communications Difficult to Crack

As the world is wary about cyber hackers in China, the next big thing for it is launching an experimental quantum communication satellite in July that was designed by the Chinese Academy of Sciences (CAS), making it first of its kind.

Since quantum communications assure the highest level of security being hard to replicate or separate. Nor can it be reverse engineered as it involves a complex process employing quantum entanglement. Once it is successful, China can be sure that no one can crack into its security networks, making it impossible for any world power to snoop around.

Developed over the last five years, the quantum satellite will be launched from the Jiuquan Satellite Launch Center with four ground stations to track and facilitate communication. Moreover, it will have one space quantum teleportation experiment station, said a report prepared by CAS.

Quantum thermal transistor can control heat currents

(Phys.org)—Researchers have designed a quantum thermal transistor that can control heat currents, in analogy to the way in which an electronic transistor controls electric current. The thermal transistor could be used in applications that recycle waste heat that has been harvested from power stations and other energy systems. Currently, there are methods for transporting and guiding this heat, but not for controlling, amplifying, and switching the heat on and off, as the quantum thermal transistor can do.

The researchers, Karl Joulain et al., at the University of Poitiers and CNRS in France, have published a paper on the quantum thermal transistor in a recent issue of Physical Review Letters.

“To manage electricity, one uses electronic diodes, transistor and amplifiers,” Joulain told Phys.org. “We would like to do the same thing with thermal currents. We would like to make logical thermal circuits in the same way electronic thermal circuits have been designed. In this way, wasted heat could be guided, switched on or off, amplified or modulated.”

Engineering nanodevices to store information the quantum way

Wonderful! We’re well on our way of making QC more available on many devices in the near future.

Creating quantum computers which some people believe will be the next generation of computers, with the ability to outperform machines based on conventional technology—depends upon harnessing the principles of quantum mechanics, or the physics that governs the behavior of particles at the subatomic scale. Entanglement—a concept that Albert Einstein once called “spooky action at a distance”—is integral to quantum computing, as it allows two physically separated particles to store and exchange information.

Stevan Nadj-Perge, assistant professor of and , is interested in creating a device that could harness the power of entangled particles within a usable technology. However, one barrier to the development of quantum computing is decoherence, or the tendency of outside noise to destroy the quantum properties of a quantum computing device and ruin its ability to store information.

Nadj-Perge, who is originally from Serbia, received his undergraduate degree from Belgrade University and his PhD from Delft University of Technology in the Netherlands. He received a Marie Curie Fellowship in 2011, and joined the Caltech Division of Engineering and Applied Science in January after completing postdoctoral appointments at Princeton and Delft.

China is readying to launch its first ‘hack proof’ quantum communication satellite

Personally, if this doesn’t spook you then I have to question your sanity.

Quantum communication and quantum teleportation are two technologies ancient India invented and mastered. It saddens me to see the Chinese stealing a march in these fields. India must formulate a response by studying Vedic texts to rediscovered the blueprints to these advanced technologies. I’m confident that under Modi-ji’s brilliant leadership, India will quickly surpass China and America in the field of quantum teleportation and quantum communication by 2020!

http://www.techworm.net/2016/05/china-ready-launch-first-hac…llite.html

China is readying to launch its first ‘hack proof’ quantum communication satellite

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Understanding A 10 Dimensional Universe

When someone mentions “different dimensions,” we tend to think of things like parallel universes — alternate realities that exist parallel to our own, but where things work or happened differently. However, the reality of dimensions and how they play a role in the ordering of our Universe is really quite different from this popular characterization.

To break it down, dimensions are simply the different facets of what we perceive to be reality. We are immediately aware of the three dimensions that surround us on a daily basis – those that define the length, width, and depth of all objects in our universes (the x, y, and z axes, respectively).

Beyond these three visible dimensions, scientists believe that there may be many more. In fact, the theoretical framework of Superstring Theory posits that the universe exists in ten different dimensions. These different aspects are what govern the universe, the fundamental forces of nature, and all the elementary particles contained within.

Synchronization of optical photons for quantum information processing

Syncing of optical photons.

A fundamental element of quantum information processing with photonic qubits is the nonclassical quantum interference between two photons when they bunch together via the Hong-Ou-Mandel (HOM) effect. Ultimately, many such photons must be processed in complex interferometric networks. For this purpose, it is essential to synchronize the arrival times of the flying photons and to keep their purities high. On the basis of the recent experimental success of single-photon storage with high purity, we demonstrate for the first time the HOM interference of two heralded, nearly pure optical photons synchronized through two independent quantum memories. Controlled storage times of up to 1.8 μs for about 90 events per second were achieved with purities that were sufficiently high for a negative Wigner function confirmed with homodyne measurements.

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