Reducing quantum control for spin-spin entanglement distribution
Data(s) |
30/11/2009
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Resumo |
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. |
Identificador |
http://dx.doi.org/10.1088/1367-2630/11/11/113053 http://www.scopus.com/inward/record.url?scp=72049123766&partnerID=8YFLogxK |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Ciccarello , F , Paternostro , M , Palma , G M & Zarcone , M 2009 , ' Reducing quantum control for spin-spin entanglement distribution ' New Journal of Physics , vol 11 , 113053 , pp. 113053-113054 . DOI: 10.1088/1367-2630/11/11/113053 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/3100 #Physics and Astronomy(all) |
Tipo |
article |