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Título del libro: 2022 Ieee International Workshop On Metrology For Industry 4.0 And Iot, Metroind 4.0 And Iot 2022 - Proceedings
Título del capítulo: Optimal quantum control of a spin qubit in diamond for biosensing

Autores UNAM:
SANTIAGO HERNANDEZ GOMEZ;
Autores externos:

Idioma:

Año de publicación:
2022
Palabras clave:

Diamonds; Magnetometers; Magnetometry; Nanomagnetics; Quantum theory; Biosensing; Nano scale; Nanoscale magnetic resonance imaging; Nitrogen vacancies; Optimal quantum control; Optimization problems; Quantum control; Quantum sensing; Quantum sensors; Spin qubit; Magnetic resonance imaging


Resumen:

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. © 2022 IEEE.


Entidades citadas de la UNAM: