Optimal quantum control of a spin qubit in diamond for biosensing

被引：0
|
作者：
Hernandez-Gomez, Santiago [1 ]
Balducci, Federico [2 ]
Cappellaro, Paola [3 ,4 ]
Scardicchio, Antonello [5 ]
Fabbri, Nicole [6 ]
机构：
[1] Univ Firenze, LENS European Lab Nonlinear Spect, Dipartimento Fis & Astron, Sesto Fiorentino, Italy
[2] Ist Nazl Fis Nucl, SISSA Int Sch Adv Studies, Trieste, Italy
[3] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[4] MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA
[5] Ist Nazl Fis Nucl, Abdus Salam Int Ctr Theoret Phys, Trieste, Italy
[6] CNR INO, Ist Nazl Ottica, LENS European Lab Nonlinear Spect, Sesto Fiorentino, Italy
来源：
PROCEEDINGS OF 2022 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR INDUSTRY 4.0 & IOT (IEEE METROIND4.0&IOT) | 2022年
关键词：
quantum sensing; magnetometry; nano-MRI; quantum control; optimization problems; SINGLE; CENTERS; FIELD;
D O I：
10.1109/MetroInd4.0IoT54413.2022.9831543
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
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.
引用
收藏
页码：115 / 120
页数：6
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