= Noiseless subsystems
{wiki=Noiseless_subsystems}
Noiseless subsystems (NSS) is a concept in quantum information theory that addresses the challenges of noise in quantum computations and communication. It is particularly relevant for quantum error correction and quantum communication systems. The key idea behind noiseless subsystems is to identify portions of a quantum system that remain unaffected, or "noiseless," under certain types of noise, allowing for effective encoding and processing of quantum information.
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