Synthetic clock transitions via continuous dynamical decoupling

Area of Science:

• Quantum Science
• Atomic Physics
• Condensed Matter Physics

Background:

• Decoherence in quantum systems arises from environmental fluctuations, hindering quantum science.
• Clock transitions enhance coherence by being insensitive to environmental noise but aren't universally applicable.
• Developing new methods for noise-resilient quantum states is crucial for advancing quantum technologies.

Purpose of the Study:

• To engineer synthetic clock transitions in a spin-1 Bose-Einstein condensate.
• To significantly reduce the system's sensitivity to magnetic-field noise.
• To create robust quantum states for advanced cold-atom experiments.

Main Methods:

• Utilized continuous dynamical decoupling to create a trio of synthetic clock transitions.
• Employed a concatenated scheme to suppress sensitivity to control field fluctuations.
• Investigated a spin-1 Bose-Einstein condensate system.

Main Results:

• Achieved a reduction in sensitivity to magnetic-field noise by up to four orders of magnitude.
• Demonstrated suppression of sensitivity to control field fluctuations.
• Created field-insensitive quantum states.

Conclusions:

• Synthetic clock transitions offer a powerful method to combat decoherence in quantum systems.
• These field-insensitive states are foundational for next-generation cold-atom experiments.
• The work paves the way for exploring quantum magnetism, artificial gauge fields, and topological matter.