Light with Tunable Non-Markovian Phase Imprint.

Area of Science:

• Optics and Photonics
• Quantum Optics
• Statistical Physics

Background:

• Non-Markovian processes describe systems where future states depend on the entire past history, not just the present.
• Controlling light coherence is crucial for applications in imaging, communication, and fundamental physics.
• Generating light with tailored non-Markovian properties presents a significant experimental challenge.

Purpose of the Study:

• To introduce a simple and flexible method for generating spatially non-Markovian light.
• To demonstrate the tunable coherence properties of this light in one and two dimensions.
• To provide a controllable experimental platform for studying non-Markovian phenomena.

Main Methods:

• Development of a novel technique to generate spatially non-Markovian light.
• Experimental probing of the light's far-field behavior.
• Analysis of the light's diffraction pattern after passing through a double slit.

Main Results:

• Successful generation of spatially non-Markovian light with tunable coherence.
• Observation of unique line- or cross-shaped dark regions in far-field and diffraction patterns, instead of a central intensity maximum.
• Demonstration that the width and profile of these dark regions are dependent on the non-Markovian coherence properties.

Conclusions:

• The presented method offers a simple, flexible, and reproducible way to create non-Markovian light.
• The observed unusual diffraction and far-field patterns provide clear evidence of non-Markovian effects.
• This approach serves as a valuable test bed for advancing the understanding of non-Markovian processes in optics and beyond.