Read the full Science Daily Article at: Manipulating Light On A Chip For Quantum Technologies

“This precise manipulation is a very exciting development for fundamental science as well as for future quantum technologies.” said Prof Jeremy O’Brien, Director of the Centre for Quantum Photonics, who led the research.

The team reports its results in the June issue of Nature Photonics, a sister journal of the science journal Nature, …

Quantum technologies with photons

Quantum technologies aim to exploit the unique properties of quantum mechanics, …

For example a quantum computer relies on the fact that quantum particles, such as photons, can exist in a “superposition” …

Photons are an excellent choice for quantum technologies because they are relatively noise-free;…

Making two photons “talk” to each other to generate the all-important entangled states is much harder, …

Last year, the Centre for Quantum Photonics at Bristol showed how such interactions between photons could be realised…

Photons are also required to “talk” to each other to realise the ultra-precise measurements …

Manipulating photons on a silicon chip

“Despite these impressive advances, the ability to manipulate photons on a chip has been missing,” …

The team coupled photons into and out of the chip, fabricated at CIP Technologies, using optical fibres. …

The researchers proved that one of the strangest phenomena of the quantum world, namely “quantum entanglement”, …

This on-chip entanglement has important applications in quantum metrology and the team demonstrated an ultra-precise measurement in this way.

“As well as quantum computing and quantum metrology, on-chip photonic quantum circuits …

“The really exciting thing about this result is that it will enable the development of…

A commentary on the work that appeared in the same issue [Nature Photonics 3, 317 (2009)] …

The other co-author of the Nature Photonics paper is Dr André Stefanov,…

The work was funded by the Engineering and Physical Sciences Research Council (EPSRC), …

read the full Science Daily Article at: Manipulating Light On A Chip For Quantum Technologies

ScienceDaily (June 10, 2009) —