Shaped Pulses for Energy Efficient High-Field NMR at the Nanoscale

TL;DR

This paper introduces shaped microwave pulses that significantly reduce energy consumption and enhance sensitivity in high-field NMR at the nanoscale, addressing key challenges in quantum sensing.

Contribution

It presents a general method for designing shaped pulses that improve energy efficiency and sensitivity in quantum sensors at high magnetic fields.

Findings

Achieved orders of magnitude reduction in energy consumption.

Increased sensitivity compared to standard pulses.

Applicable to various quantum sensors.

Abstract

The realisation of optically detected magnetic resonance via nitrogen vacancy centers in diamond faces challenges at high magnetic fields which include growing energy consumption of control pulses as well as decreasing sensitivities. Here we address these challenges with the design of shaped pulses in microwave control sequences that achieve orders magnitude reductions in energy consumption and concomitant increases in sensitivity when compared to standard top-hat microwave pulses. The method proposed here is general and can be applied to any quantum sensor subjected to pulsed control sequences.