In a recent Phys. Rev. Letter we take a look at the idea of using a chain of spins as a ‘wiring’ to bridging the gap between well-separated NV centres in diamond. We conclude that while the idea certainly works as a means of state transfer, the levels of control and isolation required for the spins are well beyond existing or near-future capabilities. However the imperfect chains one might foresee in the near future can suffice to distribute noisy entanglement, which could then be distilled.
Authors of this work include Yuting Ping, Brendon Lovett, Simon Benjamin and Erik Gauger.