БЛОГ

Archive for the ‘quantum physics’ category: Page 731

Feb 15, 2016

Researchers develop error correction method for quantum computing based on Majorana fermions

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

Theoretical physicists at MIT recently reported a quantum computer design featuring an array of superconducting islands on the surface of a topological insulator. They propose basing both quantum computation and error correction on the peculiar behavior of electrons at neighboring corners of these islands and their ability to interact across islands at a distance. “The lowest energy state of this system is a very highly entangled quantum state, and it is this state that can be used to encode and manipulate qubits,” says graduate student Sagar Vijay, lead co-author of the paper on the proposed system, with senior author Liang Fu, associate professor of physics at MIT, and Timothy H. Hsieh PhD ’15. As Vijay explains it, the proposed system can encode logical qubits that can be read by shining light on them. At the simplest level of explanation, the system can characterize the state of a quantum bit as a zero or a one based on whether there is an odd or even number of electrons associated with a superconducting quantum bit, but the underlying physical interactions that allow this are highly complex.

Read more

Feb 15, 2016

Incorporating Qubits In Solid State Devices Might Enhance Quantum Networks

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

Qubits in solid state devices for transmission across an Quantum Internet is a given in order to have great performance on a Quantum Network as well as help ensuring secured transmission of information across the net — this is a given and why Quantum is a must for supporting and securing things like AI, IoT, and other emerging technologies such as Brain Interface devices.

Without this technology; it will be very hard for industries, governments, and especially consumers to embrace and adopt full automated AI, brain interface devices, etc.


A research team from the Joint Quantum Institute have developed a way for qubits to interact with photons, which could ultimately lead to futuristic quantum networks. Theorists explained that such a solid state device could give birth to compact chip-integrated quantum circuits enabling gigahertz range bandwidths.

Continue reading “Incorporating Qubits In Solid State Devices Might Enhance Quantum Networks” »

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.

Read more

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.

Continue reading “Betting on the bots” »

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.

Continue reading “Intelligent Robots Threaten Millions of Jobs” »

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.

Read more

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.

Read more

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.

Read more

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

Read more

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.

Continue reading “Inside SU’s First Salon: Lab-Grown Organs, Cybersecurity, and AI Music Apps” »