Transmitting qudits through larger quantum channels

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چکیده

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Transmitting qudits through larger quantum channels

By a quantum channel is intended [1, 2] a completely positive and trace-precerving linear map Φ : σ(H) → σ(H), where σ(H) is a set of states in a Hilbert space H with dimH = n ≤ +∞. Even for a finite dimension n < +∞ there is a number of difficult problems concerning the construction of optimal transmission of the information through a quantum channel. The infinite dimensional case we are espec...

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ژورنال

عنوان ژورنال: Journal of Physics A: Mathematical and General

سال: 2006

ISSN: 0305-4470,1361-6447

DOI: 10.1088/0305-4470/39/13/015