Reducing quantum control for spin-spin entanglement distribution

F. Ciccarello, Mauro Paternostro, G.M. Palma, M. Zarcone

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


We present a protocol that sets maximum stationary entanglement between remote spins through scattering of mobile mediators without initialization, post-selection or feedback of the mediators' state. No time-resolved tuning is needed and, counterintuitively, the protocol generates two-qubit singlet states even when classical mediators are used. The mechanism responsible for this effect is resilient against non-optimal coupling strengths and dephasing affecting the spins. The scheme uses itinerant particles and scattering centres and can be implemented in various settings. When quantum dots and photons are used a striking result is found: injection of classical mediators, rather than quantum ones, improves the scheme efficiency.
Original languageEnglish
Article number113053
Pages (from-to)113053-113054
Number of pages2
JournalNew Journal of Physics
Publication statusPublished - 30 Nov 2009

ASJC Scopus subject areas

  • General Physics and Astronomy


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