Tag Archives: quantum

A single molecule computes thousands of times faster than your PC

from PopSci:

A demo of a quantum calculation carried out by Japanese researchers has yielded some pretty mind-blowing results: a single molecule can perform a complex calculation thousands of times faster than a conventional computer.

A proof-of-principle test run of a discrete Fourier transform — a common calculation using spectral analysis and data compression, among other things — performed with a single iodine molecule transpired very well, putting all the molecules in your PC to shame.

Schrödinger’s cash: Minting quantum money

from NewScientist:

Now the theoretical foundations are almost in place that could one day allow quantum cash to become a reality.

Since quantum money is just information, it can be stored and transmitted just like a digital picture or a text file. But because it has quantum properties too, it cannot be copied.

It is this combination that makes quantum cash so attractive: whoever is in possession of it has exclusive and unequivocal ownership of it, just as with hard, physical cash and unlike a credit card.

D-Wave Systems’ 128-qubit quantum computer aims at human-level Artificial Intelligence

from h+ Magazine:

Unlike a conventional computer that works in a binary process of rapidly switching circuits on and off, a quantum computer uses subatomic phenomena to create logical circuits called qubits that are on and off at the same time.

Qubits can be a 1, a 0, or a quantum superposition of both. Put a pair of qubits together and they can be in a superposition of four states. With three qubits you can have eight states, and so on exponentially. D-Wave Systems intends to push the field further than ever before with the world’s first 128-qubit computer, running on superconducting circuits.

Artificial robot skin will use quantum tunneling

from MIT’s Technology Review:

Peratech makes an electrically conductive material called quantum tunneling composite (QTC). When the material is compressed electrons jump between two conductors separated by polymer insulating layer covered with metallic nanoparticles.

QTC robot skin could perhaps let a robot know precisely where it has been touched, and with how much pressure. It could also be helpful in designing machines that have better grasping capabilities, and for developing more natural ways for machines to interact with humans.

h+ interviews Marc Millis on space travel, time travel, quantum tunneling & Zero-G sex

from h+ Magazine:

Marc Millis, former head of NASA’s Breakthrough Propulsion Physics Project, has designed ion thrusters, electronics for rocket monitoring, cryogenic propellant equipment, and even a cockpit display to guide free-fall aircraft flights.

His recent retirement after nearly 30 years with NASA has freed him to devote full time to his Tau Zero Foundation, “using the dream of reaching other worlds as both a long-range goal and a catalyst for near-term progress.”

The single-electron quantum supercomputer?

from Futurity:

Physicist Jason Petta may have overcome a major hurdle to designing and constructing a radically new kind of quantum computer. He’s figured out how to manipulate the single electrons that very likely will constitute the new machines’ processing components or “qubits.”

Petta’s method alters the properties of a lone electron—without disturbing the trillions of electrons in its immediate surroundings. The feat is essential to the development of future varieties of superfast computers with near-limitless capacities for data.

New variable-pressure touchscreens harness quantum-mechanical phenomenon

from PopSci:

Tapping a principle of quantum mechanics and a medieval-looking nanoparticle, a UK firm has created a composite material that may soon deliver efficient, pressure-sensitive touchscreens to numerous devices.

[...] The composite works on an idea in quantum mechanics that if you shoot a tiny particle at a solid wall, there is a slim probability that it will pass straight through, based on an effect known as quantum tunneling.

Quantum-Crypto chip brings commercialization in sight for 2013

from The Next Big Future:

Canberra-based QuintessenceLabs, a leader in quantum communications technology, has partnered with RMIT University to miniaturise its second-generation Quantum Key Distribution technology into a silicon photonic microchip. A commercial run of the quantum chip is about three years away.

Physicist discovers how to teleport energy

from M.I.T.’s Technology Review:

First, they teleported photons, then atoms and ions. Now one physicist has worked out how to do it with energy, a technique that has profound implications for the future of physics.
[...] The technique relies on the strange quantum phenomenon called entanglement, in which two particles share the same existence. This deep connection means that a measurement on one particle immediately influences the other, even though they are light-years apart.

MIT quantum computer successfully simulates a hydrogen molecule

from WIRED:

[...] Within its filters and polarizers and beam splitters, just two photons at a time traveled simultaneously, their particle-like yet wavelike natures playing peek-a-boo in clouds of probability just as quantum mechanics says they should.