Counterdiabatic driving for long-lived singlet state preparation

Area of Science:

• Quantum mechanics
• Nuclear Magnetic Resonance (NMR) spectroscopy

Background:

• The quantum adiabatic method is crucial for state preparation but is limited by slow speeds in current quantum technologies.
• Long-lived singlet states (LLS) in NMR have a long lifetime and diverse applications, with adiabatic methods currently used for their preparation.

Purpose of the Study:

• To investigate the use of counterdiabatic driving (CD) as a technique to accelerate the preparation of LLS in NMR.
• To compare the efficiency of CD with conventional adiabatic driving for LLS preparation.

Main Methods:

• Implementation of counterdiabatic driving (CD) techniques.
• Experimental verification using Nuclear Magnetic Resonance (NMR) spectroscopy.
• Comparison of LLS preparation times and achieved order using CD versus adiabatic driving.

Main Results:

• Counterdiabatic driving (CD) successfully speeds up the preparation of long-lived singlet states (LLS).
• NMR experiments demonstrated that CD yields stronger LLS order in significantly shorter durations compared to adiabatic methods.

Conclusions:

• Counterdiabatic driving (CD) offers a faster and more effective approach for preparing long-lived singlet states (LLS) in NMR.
• This advancement has implications for improving LLS-based applications in spectroscopy and biomedical imaging.