Generation of a three-qudit GHZ state with diamond defect spins
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-07-01 |
| Journal | Europhysics Letters (EPL) |
| Authors | M. Hebbache |
| Institutions | Sorbonne Paris CitƩ, Centre National de la Recherche Scientifique |
| Citations | 1 |
Abstract
Section titled āAbstractāDiamond defect spins have emerged as potential qudits (d -dimensional quantum bit) in quantum information and quantum computing. A new scheme is proposed for realizing entangled states of GHZ (Greenberger-Horne-Zeilinger) class in a 3-qudit solid-state register. The qudits are the electron spin-1 carried by the negatively charged nitrogen-vacancy color center (NVā1 ) in diamond and the nuclear spin- of two carbon-13 impurities in the first neighbour shell. Multipartite entanglements between qudits are obtained by bringing the spin system in the vicinity of a level anticrossing. The degree of entanglement between all three qudits is quantified rigorously. GHZ and GHZ-like entangled states have applications in quantum communication and computation protocols.