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quant-ph2008★ 59 cited
Tomography increases key rates of quantum-key-distribution protocols
Shun Watanabe, Ryutaroh Matsumoto, Tomohiko Uyematsu
We construct a practically implementable classical processing for the BB84 protocol and the six-state protocol that fully utilizes the accurate channel estimation method, which is…
quant-ph1999
Constructing quantum error-correcting codes for p^m-state systems from classical error-correcting codes
Ryutaroh Matsumoto, Tomohiko Uyematsu
We generalize the construction of quantum error-correcting codes from GF(4)-linear codes by Calderbank et al. to p^m-state systems. Then we show how to determine the error from a s…