Researchers have proposed a way to make use of noise in quantum computing.
Isolating systems from 'noisy' environmental interactions has been the focus of much research. Jens Eisert and his colleagues at the Free University of Berlin, however, propose an alternate framework in which information is encoded in a quantum system combined with its noisy environment.
To do this, the authors exploit an effect called the cutoff phenomenon, in which combined systems suddenly change states. This phenomenon defines points in time to launch calculations or read out results.
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Noisy quantum calculations. Nature 495, 284 (2013). https://doi.org/10.1038/495284b