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2002
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Abstract
Coding using quantum states in an angular-momentum (2j+1)-dimensional Hilbert space H is considered in this paper. A concatenated code is studied in two steps. In the first step the space HN is considered and the code is its subspace HA spanned by the direct products of N angular-momentum states with the same m. In the second step the space HAM is considered and the code is its subspace HB spanned by the direct products of M angle states with the same m. It is shown that the code introduces redundancy with respect to any transformation.
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Vourdas, A. (2002). Coding with finite quantum systems. Physical Review A. Vol. 65, No. 4A, pp. 042321 1 - 042321 6.
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