Multi-reflection quantum-optical coherence tomography and experimental mimic with the classical optical field.

Area of Science:

• Quantum optics
• Metrology
• Biomedical imaging

Background:

• Quantum optical coherence tomography (QOCT) utilizes quantum interference for enhanced imaging.
• Current QOCT research primarily focuses on two-photon systems, achieving twofold axial resolution improvement.
• Classical optical coherence tomography (OCT) is a widely used imaging technique.

Purpose of the Study:

• To introduce a theoretical framework for multi-reflection quantum-optical coherence tomography (MQOCT).
• To investigate the potential for enhanced axial resolution in QOCT using multiple reflections.
• To develop and validate a classical optical analogy for MQOCT.

Main Methods:

• Theoretical framework development for MQOCT.
• Incorporation of a multiple reflections strategy into the QOCT scheme.
• Experimental validation of a classical optical analogy using P-beam correlated multi-mode broadband beams.

Main Results:

• MQOCT theoretically enhances axial resolution by a factor of N (number of reflections) compared to QOCT.
• The proposed MQOCT scheme preserves the dispersion cancellation capability of QOCT.
• The classical optical analogy demonstrates equivalent resolution enhancement and dispersion cancellation without quantum light source fragility.

Conclusions:

• MQOCT offers significant theoretical advantages in axial resolution for QOCT.
• A robust classical optical analogy of MQOCT can be realized, overcoming quantum light source limitations.
• This work paves the way for more advanced and practical QOCT-based imaging techniques.