Quantum Computing
Top 5 Quantum Computing Posts from the past week on the web

We understand how difficult it is to keep up to date with the week’s most exciting Quantum Computing news, so that’s why we’ve created a post that allows you to keep up to date with the top news from all over the web. From the detailing of the leap in Quantum Computing from Professor Weimin Chen and his Linköping University colleagues to the solution of the noise pollution from qubits that has taken place at the Joint Quantum Institute – this week has certainly been one of note.

1. Scientists create leap forward for quantum computing

Scientists have devised a method for both “initializing and reading nuclear spins at room temperature”, which could help clear the way for quantum computing’s arrival in the future and supercede current digital computing.
With the help of a spin filter, Professor Weimin Chen and colleagues at Linköping University, Sweden succeeded in producing “a flow of free electrons with a given spin in a material at room temperature”.
This is the first time strong nuclear spin polarisation is demonstrated at room temperature by spin-polarised conduction electrons, says the research team.
The implication of the method’s success is significant simply bec…

Highlight: Chen’s quote: “We prove experimentally that the measurable magnetic field from the nuclei, as well as the strong polarisation of the nuclear spins in the material at room temperature, comes from the dynamic polarisation of the nuclear spin in the extra added Ga atoms,”

Shows that nuclear spin polarisation happens very quickly – potentially in less than a nanosecond (one-billionth of a second). With that, this new method arrives with the advantage of making use of free electrons. Thus making it possible to control the polarisation of the spin in the nucleus electrically and making the information readable.

Read on here.

2. Best of Both Worlds: Towards a Quantum Internet With Combined Optical and Electrical Technique

An Australian team led by researchers at the University of New South Wales has achieved a breakthrough in quantum science that brings the prospect of a network of ultra-powerful quantum computers — connected via a quantum internet -closer to reality.

Read on here

Highlight: It has to be that the lead author of the study, Dr Chunming Yin, talking about the possibility of using light to couple the atoms, or qubits, together to form a quantum computer.

“Using light to transfer information in the quantum state is easier than doing it electrically. Ultimately this will lead to quantum communications over long distances,”

3. Reducing noise in qubit arrays

If quantum computers are ever to be built, qubits will have to be made more robust and more numerous. Qubits, the quantum equivalent of the bits used in conventional computers, can easily lose their orientation in a process called decoherence when confronted with a noisy environment. Also, if qubits are to enable true quantum computing for things such as such as factoring or searching, they will have to link up in large arrays of memory units and logical gates. New work by scientists at the Joint Quantum Institute addresses both of these concerns—noise reduction and scalability.

Highlight: JQI scientist, Lev Bishop, saying that most likely the two greatest forms of noise in quantum dots are caused by both the disruptive interactions between the electron pair and the nuclei of the underlying atoms that make up the quantum dot and the fluctuation of electric charge near the quantum dots.

Read on here

4. Quantum Computing Firm D-Wave Systems Launches U.S. Business

BURNABY, British Columbia and PALO ALTO, Calif., May 2, 2013 /CNW/ – D-Wave Systems Inc., the world’s first commercial quantum computing company, today announced the formal launch of its U.S. business. Industry expert and supercomputing veteran, Robert “Bo” Ewald will lead the U.S. business as President and will head up global customer operations as the company’s Chief Revenue Officer. New offices and R&D facilities have opened in Palo Alto, California and others are expected in the near future.

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Highlight: Vern Brownell, CEO of D-Wave Systems Inc. said that “Bo Ewald joining us is huge validation of our business – Bo is a legendary figure in the supercomputing industry. His knowledge and influence reach a wide array of sectors, where he has delivered state-of-the-art high performance solutions for research, defense and intelligence, energy, manufacturing, financial services and genomics. Throughout Bo’s career he has been dedicated to helping organizations solve their most difficult challenges, which perfectly matches the mission of D-Wave. Today we launch our formal presence in the U.S. and will start to expand our business globally. It is gratifying to have Bo at the helm.”

5. Imagining a quantum future

The problem with groundbreaking discoveries is they’re often hard to see coming, and hard to appreciate once they arrive.
Imagine it’s 1947, and you’re reading that a New Jersey research hub called Bell Laboratories has just invented something called a transistor, a strange little device made of gold foil glued to a piece of plastic. You would probably greet its arrival with a shrug.

Highlight: Mike Lazaridis’ speculations and predictions about the potential impacts of a Quantum future: “I don’t think many people would have appreciated what the transistor meant to society, including the people at (Bell Labs),” Lazaridis said. “Historically, whenever anyone tried to anticipate the future of a scientific discovery, they were very wrong in a conservative way. They missed the thing that changed everything.”

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