Aligning spatial frames through quantum channels

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5 Citations (Scopus)


We review the optimal protocols for aligning spatial frames using quantum systems. The communication problem addressed here concerns a type of information that cannot be digitalized. Asher Peres referred to it as "unspeakable information." We comment on his contribution to this subject and give a brief account of his scientific interaction with the authors. © World Scientific Publishing Company.
Original languageEnglish
Pages (from-to)5-16
JournalInternational Journal of Quantum Information
Issue number1
Publication statusPublished - 1 Feb 2006


  • "Unspeakable" information
  • Communication through a quantum channel
  • Quantum reverse engineering


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