Phase and amplitude imaging with quantum correlations through Fourier Ptychography

Area of Science:

• Quantum optics
• Image reconstruction
• Metrology

Background:

• Extracting detailed object information with limited photons is crucial for biology, security, and metrology.
• Conventional imaging fails with few photons due to detector noise and stray light.
• Existing heralded imaging schemes capture intensity but lose phase information.

Purpose of the Study:

• To develop a novel quantum-correlation enabled Fourier Ptychography technique.
• To capture high-resolution amplitude and phase images using only a few photons.
• To overcome limitations of existing low-photon imaging methods.

Main Methods:

• Heralding of single photons from photon pairs.
• Integration of heralded photons with Fourier Ptychography (FP).
• Development of a quantum-correlation enabled FP reconstruction algorithm.

Main Results:

• Demonstrated high-resolution amplitude and phase imaging with few photons.
• Experimental validation of the proposed quantum FP technique.
• Achieved improved signal-to-noise ratio compared to conventional methods.

Conclusions:

• The novel technique successfully recovers both amplitude and phase information from low-photon count measurements.
• This method offers significant advantages for low-light imaging applications.
• The technique enables non-scanning Fourier Ptychographic acquisition, increasing efficiency.