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Researchers discover new material for quantum computing

ANI | Last Updated: Monday, October 28, 2013 - 11:39

Washington: A common blue pigment that is used in the 5-pound-note could have an important role to play in quantum computer`s development, according to a new research.

The pigment, copper phthalocyanine (CuPc), is similar to the light harvesting section of the chlorophyll molecule, is a low-cost organic semiconductor that is found in many household products.

Crucially, it can be processed into a thin film that can be readily used for device fabrication, a significant advantage over similar materials that have been studied previously.

Researchers from the London Centre for Nanotechnology at UCL and the University of British Columbia have shown that the electrons in CuPc can remain in `superposition` - an intrinsically quantum effect where the electron exists in two states at once - for surprisingly long times, showing this simple dye molecule has potential as a medium for quantum technologies.

The development of quantum computing requires precise control of tiny individual "qubits", the quantum analogs of the classical binary bits, `0` and `1`, which underpin all of our computation and communications technologies today. What distinguishes the " qubits " from classical bits is their ability to exist in superposition states.

The decay time of such superpositions tells us how useful a candidate qubit could be in quantum technologies. If this time is long, quantum data storage, manipulation and transmission become possible.

The study has been published in the journal Nature.

First Published: Monday, October 28, 2013 - 11:38

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