Physics Today


Tunable light speeds up the search for the perfect qubit


Executive Summary

One of the most promising candidates for the perfect quantum qubit are defect centres in solid-state materials, also known as colour centres, which have been found to emit a single photon per excitation event when excited by laser light of a particular frequency. Widely tunable cw lasers make it quicker and easier to characterize the internal energy structure of different qubit contenders. Learn about these lasers and how they are used to characterise colour centers in this white paper.





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