Quantum computers use the power of atoms to perform memory and processing tasks. Learn why quantum computers will be faster than silicon-based computers.
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can't manage. But how do you test a quantum computer to ensure it is working reliably? Depending on the algorithmic task, this could be an easy or a very difficult certification problem. An international team of researchers has taken an important step towards solving a difficult variation of this problem, using a statistical approach.
With a new contribution to probability theory, researchers show that relatively simple physical systems could yield powerful quantum computers.
At the heart of the idea is the fact that the complexity of quantum systems grows exponentially as they increase in size.
Quantum computers could crack problems that are impossible for conventional computers. But first researchers have to build one that's big enough to be usefu...
Building a quantum computer requires reckoning with errors—in more than one sense. Quantum bits, or "qubits," which can take on the logical values zero and one simultaneously, and thus carry out calculations faster, are extremely susceptible to perturbations. A possible remedy for this is quantum error correction, which means that each qubit is represented redundantly in several copies, such that errors can be detected and eventually corrected without disturbing the fragile quantum state of the qubit itself. Technically, this is very demanding. However, several years ago, an alternative proposal suggested storing information not in several redundant qubits, but rather in the many oscillatory states of a single quantum harmonic oscillator. The research group of Jonathan Home, professor at the Institute for Quantum Electronics at ETH Zurich, has now realised such a qubit encoded in an oscillator. Their results have been published in the scientific journal Nature.
Scientists have developed a quantum chemistry simulation benchmark to evaluate the performance of quantum devices and guide the development of applications for future quantum computers.
Quantum computing is hair-brained, but then again so is classical probabilistic computing. Part I of my attempt to explain one of my main research interests in quantum computing: "self-correcting quantum computers."
this is a complete guide to quantum computing explained in a very simple and easy to understand language for anyone knowing only simple english
In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TED...
Researchers at ETH have demonstrated a new technique for carrying out sensitive quantum operations on atoms. In this technique, the control laser light is delivered directly inside a chip. This should make it possible to build large-scale quantum computers based on trapped atoms.
Getting photons to interact is a key step toward using them as qubits
Optimists think quantum computers will perform all tasks faster and smarter than classical computers. Here’s the lowdown on industries that stand to benefit most from quantum computers, signs to watch for progress, and the impact on software developers.
Qubit-based machines are gearing up to solve problems that are out of reach for even the most powerful supercomputers.
Physicists at Uppsala University in Sweden have identified how to distinguish between true and 'fake' Majorana states in one of the most commonly used experimental setups, by means of supercurrent measurements. This theoretical study is a crucial step for advancing the field of topological superconductors and applications of Majorana states for robust quantum computers. New experiments testing this approach are expected next.
0:00 Intro - Why Quantum Computers Shouldn't Work1:22 A Toy Problem4:00 Solving the Problem With Quantum Computing10:11 Why Does it Work13:12 More Practical ...
Where are the limits of human technology? And can we somehow avoid them? This is where quantum computers become very interesting. Check out THE NOVA PROJECT ...
Quantum computers raise and answer new questions in the security field, primarily in cryptography. Learn more.
QUANTUM COMPUTING refers to the use of quantum properties–the properties of nature of an atomic scale to solve complex problems much faster than the convectional (normal) or classical computers.It have been placed theoretically that quantum computing system could function 100 million times better than the normal (convectional) or classical computing system. Quantum computing could potentially…
In less than 100 seconds, John Rarity explains how quantum mechanics could speed up computing exponentially. Visit physicsworld.com for more videos, webinars...
