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Archive for the ‘quantum physics’ category: Page 554

Jun 11, 2019

The Micius satellite traces a green line across the sky as it communicates via laser with a ground station in north China in this long-exposure photo

Posted by in category: quantum physics

Using quantum entanglement, Micius allows perfectly secure, unhackable communication.

> https://cosmosmagazine.com/technology/the-quantum-internet-i…eing-built <

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Jun 11, 2019

Hypersonic matterwaves for ultrafast atomtronics

Posted by in categories: particle physics, quantum physics, transportation

Atomtronics manipulates atoms much in the way that electronics manipulates electrons. It carries the promise of highly compact quantum devices which can measure incredibly small forces or tiny rotations. Such devices might one day be used to monitor Earth’s status by sensing water levels in the desert or in the search for minerals and oil. They will also be used in navigation, when GPS fails on planes or ships due to malicious attacks or simply because it is not available, e.g. in the deep seas. They might also one day act as portable quantum simulators solving complex computational tasks.

Coherent atomtronics manipulates atoms in the form of matterwaves originating from Bose-Einstein condensates (a state of matter in which all the atoms lose their individual identity and become one single quantum state with all the atoms being everywhere in the condensate at the same time). The atoms in these matterwaves behave much more like waves rather than individual particles. These matterwaves can be brought to interfere and thus made to respond to the tiniest changes in their environment such as the difference in gravitational pull between light organic material and heavy iron ore. When compared to light, atoms can be 10 billion times more sensitive, e.g. to rotation or acceleration, when compared to the photons that make up light. This sensitivity depends on the measurement time and—just like Newton’s apple—atoms fall due to Earth’s gravity. This forces the most sensitive interferometers to be very tall, reaching 10 meters and in some cases even 100 meters.

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Jun 10, 2019

Researchers find a way to make Casimir effect attract or repulse depending on gap size

Posted by in categories: nanotechnology, quantum physics

A team of researchers from the University of California at Berkeley and Lawrence Berkeley National Laboratory has found a way to make the Casimir effect attract or repulse depending on the size of the gap between two objects. In their paper published in the journal Science, the group describes their technique and possible applications.

The Casimir effect, first proposed by Hendrik Casimir back in 1948, is the phenomenon in which two tiny surfaces in close proximity experience a force that pulls them closer together. Quantum fluctuations inside and outside of the gap push against the plates, but because those pushing from the outside are stronger, they create an between the two plates. The Casimir effect is more than a curiosity, because it can create problems in nanotechnology applications.

Just two years after Casimir first proposed the effect, others in the field began making predictions about ways to counter it—making it repulsive rather than attractive, for example, in the case of fluids and plates made of lower refractive metals. Then, in 2010, a team at MIT suggested that it should be possible to counter both attractive and repulsive effects to create a state of equilibrium between the two plates. In this new effort, the researchers report that they have done just that.

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Jun 10, 2019

Fiber-optic probe can see molecular bonds

Posted by in categories: engineering, nanotechnology, quantum physics

In “Avengers: Endgame,” Tony Stark warned Scott Lang that sending him into the quantum realm and bringing him back would be a “billion-to-one cosmic fluke.”

In reality, shrinking a to a nanometer-sized point to spy on quantum-scale -matter interactions and retrieving the information is not any easier. Now, engineers at the University of California, Riverside, have developed a new technology to tunnel light into the quantum realm at an unprecedented efficiency.

In a Nature Photonics paper, a team led by Ruoxue Yan, an assistant professor of chemical and , and Ming Liu, an assistant professor of electrical and computer engineering, describe the world’s first portable, inexpensive, optical nanoscopy tool that integrates a glass optical fiber with a silver nanowire condenser. The device is a high-efficiency round-trip light tunnel that squeezes visible light to the very tip of the condenser to interact with molecules locally and send back information that can decipher and visualize the elusive nanoworld.

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Jun 10, 2019

A Thousand Times Better Instrument Will Investigate Emdrive and Mach Propulsion

Posted by in categories: nanotechnology, quantum physics

Martin Tajmar has a SpaceDrive project and plans to create an instrument so sensitive and immune to interference that it would put an end to the debate once and for all. Tajmar believes that studying the EmDrive and similar propellantless propulsion systems will requir nano-newton instrument resolution.

He is making a new to torsion balance. It is a pendulum-type balance that measures the amount of torque applied to the axis of the pendulum. Tajmar’s team used a laser interferometer to measure the physical displacement of the balance scales. The new torsion scale has a nano-newton resolution and supports thrusters weighing several pounds, making it the most sensitive thrust balance in existence.

The SpaceDrive Project-Thrust Balance Development and New Measurements of the Mach-Effect and EMDrive Thrusters.

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Jun 10, 2019

Making a Real Lightsaber Using Rydberg Atoms and Photonic Molecules

Posted by in categories: particle physics, quantum physics, weapons

In this video I show you an awesome laser lightsaber and then I talk about lightsabers and the possibility of using photonic molecules to build a real lightsaber. This thing is awesome! If the force is with us (and some quantum mechanics) we will some day have a true lightsaber…These are very dangerous lasers. NOT A TOY. Will cause instant blindness:

Blue Laser Pointer Lightsaber kit: https://goo.gl/9JUWdp

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Jun 9, 2019

Richard Christophr Saragoza Photo

Posted by in categories: biotech/medical, neuroscience, quantum physics

The double helix of dna and transferring for information and energy by torsion field in quantum beings.


Every human is a complex, multi-dimensional energy being.

THE HUMAN BIOFIELD DEFINED:

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Jun 9, 2019

Breakthrough photonic processor promises quantum computing leap

Posted by in categories: computing, quantum physics

Researchers from the University of Bristol and Nippon Telegraph and Telephone claim to have developed a fully-programmable quantum optical chip able to encode and manipulate photons in an infinite number of ways. This breakthrough may pave the way for true quantum optical computing systems.

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Jun 9, 2019

Quantum batteries could reduce the charging time to literally nothing

Posted by in category: quantum physics

Batteries are great, except that they take a long time to charge. When you are dealing with a lot of batteries, you have to have a lot of time to charge them. But what if you could reduce the charging time by adding more batteries? Sounds unreal? Probably, but that is what scientists at the University of Adelaide are going to try to achieve by creating world’s first quantum battery.

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Jun 9, 2019

Electrifying quantum dots for lasers

Posted by in categories: quantum physics, space, transportation

Compositional grading of colloidal quantum dots enables electrically driven amplification of light, bringing electrically driven lasers from these materials very close.