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Google Demos Quantum Algorithm Promising Superfast Search

Quantum computing has long dangled the possibility of superfast, super-efficient processing, and now search giant Google has jumped on board that future…

…Quantum computing has long dangled the possibility of superfast, super-efficient processing, and now search giant Google has jumped on board that future. New Scientist reports that Google has spent the past three years developing a quantum algorithm that can automatically recognize and sort objects from still images or video.
The promise of quantum computing rests with the bizarre physics that occurs at the subatomic level. Different research teams have worked on creating quantum processors that store information as qubits (quantum bits), which can represent both the 1 and 0 of binary computer language at the same time. That dual possibility state allows for much more efficient processing and information storage.
To take an example cited by Google, a classical computer might need 500,000 peeks on average to find a ball hidden somewhere within a million drawers. But a quantum computer could find the ball by just looking into 1,000 drawers — a nice little stunt known as Grover’s algorithm.
Google has been…

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Google Demos Quantum Algorithm Promising Superfast Search

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Single spinning nuclei in diamond offer a stable quantum computing…

Surmounting several distinct hurdles to quantum computing, physicists at Harvard University have found that individual carbon-13 atoms in a diamond lattice can be manipulated with extraordinary precision to create stable quantum mechanical memory and a small quantum processor, also known as a quantum register, operating at room temperature.

…Earlier advances in quantum computing have occurred inside high vacuums cooled to fractions of a degree above absolute zero. Individual quantum bits, or qubits — the building blocks of a quantum computer, encoding information much as a conventional computer bit stores information as zeroes and ones — are extremely fragile. Usually they decay very rapidly, losing quantum information within a tiny fraction of a second unless the qubit is suspended in high vacuum under these specialized, extreme conditions. This short “coherence time” has been a major impediment to advances in quantum computing.
Quantum mechanics dictates that coherence is destroyed — and quantum information lost — through contact with virtually anything, which is why previous attempts at quantum computing have occurred under such extreme circumstances. This need for absolute isolation has vexed scientists for more than a decade, not only because it is difficult to achieve experimentally — not to mention in a practical computer — but…

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Single spinning nuclei in diamond offer a stable quantum computing…

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