Abstract：
:Dynamical polarization of nuclear spin ensembles is of central importance for magnetic resonance studies, precision sensing and for applications in quantum information theory. Here we propose a scheme to generate long-lived singlet pairs in an unpolarized nuclear spin ensemble which is dipolar coupled to the electron spins of a Nitrogen Vacancy center in diamond. The quantum mechanical back-action induced by frequent spin-selective readout of the NV centers allows the nuclear spins to pair up into maximally entangled singlet pairs. Counterintuitively, the robustness of the pair formation to dephasing noise improves with increasing size of the spin ensemble. We also show how the paired nuclear spin state allows for enhanced sensing capabilities of NV centers in diamond.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Greiner JN,Dasari DBR,Wrachtrup Jdoi
10.1038/s41598-017-00603-zsubject
Has Abstractpub_date
2017-04-03 00:00:00pages
529issue
1issn
2045-2322pii
10.1038/s41598-017-00603-zjournal_volume
7pub_type
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