For discrete variables, a POVM on a system can be thought of as a projective measurement on the system coupled to an apparatus. This is called the Naimark extension. Is this also true for continuous variables?(adsbygoogle = window.adsbygoogle || []).push({});

http://arxiv.org/abs/1110.6815 (Theorem 4, p10)

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# Naimark extension for continuous variables

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