Wood, BD;
Bose, S;
Morley, GW;
(2022)
Spin dynamical decoupling for generating macroscopic superpositions of a free-falling nanodiamond.
Physical Review A
, 105
(1)
, Article 012824. 10.1103/PhysRevA.105.012824.
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Abstract
Levitated nanodiamonds containing negatively charged nitrogen-vacancy centers (NV^{-}) have been proposed as a platform to generate macroscopic spatial superpositions. Requirements for this include having a long NV- spin coherence time, which necessitates formulating a dynamical decoupling strategy in which the regular spin flips do not cancel the growth of the superposition through the Stern-Gerlach effect in an inhomogeneous magnetic field. Here, we propose a scheme to place a 250-nm-diameter diamond in a superposition with spatial separation of over 250nm, while incorporating dynamical decoupling. We achieve this by letting a diamond fall for 2.4m through a magnetic structure, including 1.13m in an inhomogeneous region generated by magnetic teeth.
| Type: | Article |
|---|---|
| Title: | Spin dynamical decoupling for generating macroscopic superpositions of a free-falling nanodiamond |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.105.012824 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.105.012824 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher's terms and conditions. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10143798 |
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