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Archive for the ‘quantum physics’ category: Page 704

Feb 14, 2016

Do not mess with time: Probing faster than light travel and chronology protection with superluminal warp drives

Posted by in categories: quantum physics, space travel, time travel

ABSTRACT

While General Relativity (GR) ranks undoubtedly among the best physics theories ever developed, it is also among those with the most striking implications. In particular, GR admits solutions which allow faster than light motion and consequently time travel. Here we shall consider a “pre-emptive” chronology protection mechanism that destabilises superluminal warp drives via quantum matter back-reaction and hence forbids even the conceptual possibility to use these solutions for building a time machine. This result will be considered both in standard quantum field theory in curved spacetime as well as in the case of a quantum field theory with Lorentz invariance breakdown at high energies. Some lessons and future perspectives will be finally discussed.

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Feb 13, 2016

Betting on the bots

Posted by in categories: engineering, habitats, nanotechnology, quantum physics, robotics/AI

This is wonderful program for students wanting to learn robotics. I do believe for real AI/ traditional Robotics (not referring to nanobots or microbots) to truly accelerate in capabilities; it will require technology like Quantum.


Two young engineering students are making robotics more accessible to enthusiasts across the country

A spartan apartment at a nondescript housing society in Pashan is filled with robots of all shapes and sizes. Among the curious looking machines are two robotic hands that mimic the movement of a human body and a large quadcopter that looks as if it’s ready to fly. This is the working space of College of Engineering, Pune (CoEP) alumni Amol Gulhane and Pratik Pravin Deshmukh — the 20-something founders of Robolab, a venture that’s making robotics accessible to the masses by building robotics labs across the country.

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Feb 13, 2016

Intelligent Robots Threaten Millions of Jobs

Posted by in categories: computing, employment, internet, quantum physics, robotics/AI

Why? Why are there so many folks hyping up AI devastation?

I truly caution folks from over hyping things before they hurt a lot of innocent people. Things like Quantum Computing and Internet, CRISPR, microbot technology, etc. could be badly damaged as a result of the over hype of AI and it’s under delivery.

Also, the ongoing changing numbers on when 50% of the jobs are lost or the ongoing shuffle/ changes in the capabilities of the AI story is also creating an environment of distrust which also hurts efforts around Quantum, CRISPR, etc.

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Feb 11, 2016

Photon-Based Heat Transport May Advance Quantum Computing

Posted by in categories: computing, quantum physics

More advancement in Quantum Computing — researchers in Finland have found a way to keep the processor chip cooled without causing disrupting computer operations which has been a big challenge for Quantum Chips.


AALTO, Finland, Feb. 11, 2016 — A thermal-transport method that uses photons as carriers has been demonstrated over 1-m distances. The fundamental advance in heat conduction could drive the development of quantum computers.

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Feb 11, 2016

How to Build a Quantum Computer

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

Quantum Entanglement “Fluffy Bunny Style”.


UVM physicist wins NSF CAREER grant to study entanglement 02-08-2016 By Joshua E. Brown Two different ways in which atoms can be quantum entangled. Left: spatial entanglement where atoms in two separated regions share quantum information. Right: particle entanglement for identical atoms (colored here for clarity) due to quantum statistics and interactions.

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Feb 11, 2016

The First Image Ever of a Hydrogen Atom’s Orbital Structure

Posted by in categories: information science, particle physics, quantum physics

What you’re looking at is the first direct observation of an atom’s electron orbitalan atom’s actual wave function! To capture the image, researchers utilized a new quantum microscope — an incredible new device that literally allows scientists to gaze into the quantum realm.

An orbital structure is the space in an atom that’s occupied by an electron. But when describing these super-microscopic properties of matter, scientists have had to rely on wave functions — a mathematical way of describing the fuzzy quantum states of particles, namely how they behave in both space and time. Typically, quantum physicists use formulas like the Schrödinger equation to describe these states, often coming up with complex numbers and fancy graphs.

Up until this point, scientists have never been able to actually observe the wave function. Trying to catch a glimpse of an atom’s exact position or the momentum of its lone electron has been like trying to catch a swarm of flies with one hand; direct observations have this nasty way of disrupting quantum coherence. What’s been required to capture a full quantum state is a tool that can statistically average many measurements over time.

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Feb 10, 2016

Tachyon physics with trapped ions

Posted by in categories: particle physics, quantum physics

It has been predicted that particles with imaginary mass, called tachyons, would be able to travel faster than the speed of light. There has not been any experimental evidence for tachyons occurring naturally. Here, we propose how to experimentally simulate Dirac tachyons with trapped ions. Quantum measurement on a Dirac particle simulated by a trapped ion causes it to have an imaginary mass so that it may travel faster than the effective speed of light. We show that a Dirac tachyon must have spinor-motion correlation in order to be superluminal. We also show that it exhibits significantly more Klein tunneling than a normal Dirac particle. We provide numerical simulations of realistic ion systems and show that our scheme is feasible with current technology.

Figure Figure Figure Figure Figure

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Feb 10, 2016

Inside SU’s First Salon: Lab-Grown Organs, Cybersecurity, and AI Music Apps

Posted by in categories: computing, cyborgs, food, media & arts, quantum physics, robotics/AI, singularity, transhumanism

“We will find new things everywhere we look.” –Hunter S. Thompson

At the rate of 21st century technological innovation, each year brings new breakthroughs across industries. Advances in quantum computers, human genome sequencing for under $1,000, lab-grown meat, harnessing our body’s microbes as drugs, and bionic eye implants that give vision to the blind —the list is long.

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Feb 8, 2016

Cybersecurity Challenges, Opportunities Discussed at Dedication of Expanded National Cybersecurity Center of Excellence

Posted by in categories: business, cybercrime/malcode, quantum physics

If Russia, China, etc. upgrades their infrastructure to Quantum before US and it’s does; today’s breaches will not even compare to this scenario.


The push to bring more technology-related businesses to the state has officials hoping for long-term growth over places like Fairfax County, Va., where the federal government has already made substantial technological investment.

After the ceremony, an expert panel discussed some of the opportunities and challenges facing information infrastructure, the importance of collaboration between the public and private sectors, and how to increase consumers’ cybersecurity confidence.

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Feb 8, 2016

Nanoscale cavity strongly links quantum particles

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

Very nice; another article on photonic crystal.


Scientists have created a crystal structure that boosts the interaction between tiny bursts of light and individual electrons, an advance that could be a significant step toward establishing quantum networks in the future.

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