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Diamond single photon quantum memory can change color

Huang Xueyu www.diamondtools.top 2016-04-18 15:19:59

    Canadian NationalResearch Council and the Institute of the University of Waterloo quantum computing using a diamond in a quantum memory, the first time the color and bandwidth ultrafast single-photon conversion.

Change the color of a photon, or frequency, it is a necessary condition for optimizing quantum network connecting member. For example, in the optical quantum communication via optical transmission is the best near-infrared rays, but many measurement sensors work better at higher frequencies of visible light conditions. Between the optical fiber and photonic sensor change colors to make higher performance operations, including faster data transfer rates possible.

Published in the "natural communication" magazine of the results of this study, showing a small shift for wavelength division multiplexingletter of agreementis useful. WDM will be sent with the signal into different frequency slightly smaller package, and then at the receiving end to recover the carrier separated into various frequencies of the original signal.

Researchers in the experiment proved, can achieve single photon frequency and bandwidth conversion at room temperature diamond quantum memory. It works diamond quantum memory that converts photons into a specific vibration of carbon atoms in diamond, suitable for many different colors of light This conversion will allow the light in a broad spectrum of manipulation. Energy of diamond allows it to achieve a very low noise at room temperature. The researchers used intense laser pulse photons to store and retrieve. By controlling the color of the laser pulse, the researchers can control the color of photons to be retrieved.

The platform combines photon spectrum transform in one store and can be usedQuantum CommunicationFrequency reuse and build a very large entanglement, also known as cluster state. Cluster state can be measured by the drive as a fully quantum computing resources.