Optics and Spectroscopy

, Volume 108, Issue 3, pp 319–325 | Cite as

Entanglement enhanced bit rate over multiple uses of a lossy bosonic channel with memory

  • C. Lupo
  • S. Mancini
Quantum Informatics, Quantum Communication, and Quantum Key Distribution


We present a study of the achievable rates for classical information transmission via a lossy bosonic channel with memory, using homodyne detection. A comparison with the memoryless case shows that the presence of memory enhances the bit rate if information is encoded in collective states, i.e., states which are entangled over different uses of the channel.


Mutual Information Quantum Channel Wigner Function Collective Mode Achievable Rate 
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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • C. Lupo
    • 1
  • S. Mancini
    • 1
  1. 1.Dipartimento di FisicaUniversity of CamerinoCamerinoItaly

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