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Researchers have successfully integrated an on-demand light source in a silicon-based chip, the first fully integrated quantum optics approach that is compatible with current technology in the semiconductor industry, such as existing computer processors and memories.

Thursday, February 18, 2016

Measurement by eraser

Postdoctoral fellow at the Institute for Quantum Computing (IQC) Aharon Brodutch and Eliahu Cohen (Tel Aviv University, University of Bristol) have developed a new method for designing complex quantum measurements.

A team lead by researchers from the Institute for Quantum Computing and the Department of Physics and Astronomy at the University of Waterloo has successfully detected the presence of single photons while preserving their quantum states.

IQC PhD student John Donohue, along with Elie Wolfe from the Perimeter Institute of Theoretical Physics, has determined the required complexity of a quantum system and how many bits of shared classical information are needed between two parties to generate a general probability distribution with a known set of quantum correlations.

One of the tasks that quantum computing promises is algorithmic speedups over classical computing for certain types of problems – one of which is quantum searching. To achieve this, it’s important to build a robust quantum memory, more specifically, a memory that can store information which can be addressed quantum mechanically.