Optimal quantum control of a spin qubit in diamond for biosensing
At a Glance
Section titled “At a Glance”| Metadata | Details |
|---|---|
| Publication Date | 2022-06-07 |
| Authors | Santiago Hernández-Gómez, Federico Balducci, Paola Cappellaro, Antonello Scardicchio, Nicole Fabbri |
| Institutions | The Abdus Salam International Centre for Theoretical Physics (ICTP), National Institute of Optics |
Abstract
Section titled “Abstract”The nitrogen-vacancy (NV) center in diamond is a quantum defect in diamond with unique properties for use in high-sensitive, high-resolution quantum sensors of magnetic fields. One of the most interesting and challenging application of NV quantum sensors is nanoscale magnetic resonance imaging (nano-MRI), which would enable to address single biomolecules. To this goal, improving the sensitivity of the NV sensor is a crucial task. Here, we present a quantum optimal control method that optimizes the sensitivity of NV sensor to specific weak magnetic signals with biologically-relevant, complex spectrum. The method, based on the mapping of the sensing problem on a problem of energy optimization of an Ising chain, allows us to improve sensitivity by three orders of magnitude compared to standard control sequences.
Tech Support
Section titled “Tech Support”Original Source
Section titled “Original Source”References
Section titled “References”- 2013 - The nitrogen-vacancy colour centre in diamond [Crossref]
- 2022 - Optimal control of a quantum sensor: A fast algorithm based on an analytic solution