Using cyclic Hadamard masks for single-pixel quantum imaging under entangled photon illumination.

Area of Science:

• Quantum optics
• Photonics
• Image processing

Background:

• Quantum imaging offers unique capabilities for light-sensitive structures, but conventional systems are complex and expensive.
• Existing quantum imaging setups often rely on intensified charge-coupled devices (ICCDs) and intricate triggering electronics.

Purpose of the Study:

• To develop a simplified, low-cost quantum imaging system.
• To demonstrate high-speed and noise-resistant quantum imaging capabilities.

Main Methods:

• Implementation of a quantum imaging approach utilizing a rotating mask with cyclic Hadamard patterns.
• Employment of single-pixel detectors, eliminating the need for specialized ICCDs and complex electronics.
• Utilizing time-correlated single-photon counting (TCSPC) for noise-resistant performance evaluation with a 1-nanosecond gate time.

Main Results:

• Successful single-pixel quantum imaging with a resolution of 41x43 pixels.
• Achieved imaging speeds of up to 2 frames per second, with a spatial modulation rate of 3.8 kilohertz.
• Demonstrated quantum ghost imaging with separate object and mask modulation, highlighting system versatility.

Conclusions:

• The proposed system offers a high-speed, low-cost, and noise-resistant alternative for quantum imaging.
• This approach broadens the accessibility and application range of quantum imaging technologies.
• The rotating mask and single-pixel detector design significantly reduces system complexity and cost.