Generating maximally-path-entangled number states in two spin ensembles coupled to a superconducting flux qubit
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-01-16 |
| Journal | Physical review. A/Physical review, A |
| Authors | Yusef Maleki, Š. Š. ŠŠµŠ»ŃŠøŠŗŠ¾Š² |
| Institutions | Russian Quantum Center, Texas A&M University |
| Citations | 24 |
Abstract
Section titled āAbstractāAn ensemble of nitrogen-vacancy (NV) centers coupled to a circuit QED device is shown to enable an efficient, high-fidelity generation of high-N00N states. Instead of first creating entanglement and then increasing the number of entangled particles $N$, our source of high-N00N states first prepares a high-$N$ Fock state in one of the NV ensembles and then entangles it to the rest of the system. With such a strategy, high-$N$ N00N states can be generated in just a few operational steps with an extraordinary fidelity. Once prepared, such a state can be stored over a longer period of time due to the remarkably long coherence time of NV centers.