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Long-distance temporal quantum ghost imaging over optical fibers.
Shuai Dong1, Wei Zhang1, Yidong Huang1
1Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China.
Scientific Reports
|May 20, 2016
Summary
This study introduces a novel quantum ghost imaging (QGI) method using frequency-correlated photons. This breakthrough enables long-distance QGI applications over 50 km of optical fiber, overcoming previous geographical limitations.
Area of Science:
- Quantum optics
- Quantum information science
- Photonics
Background:
- Quantum ghost imaging (QGI) has been explored since 1995.
- Traditional QGI methods rely on position-position or momentum-momentum correlations, which are not fiber-compatible.
- This incompatibility limits the geographical scalability of QGI.
Purpose of the Study:
- To propose and demonstrate a novel scheme for long-distance quantum ghost imaging.
- To overcome the limitations of fiber non-compatibility in existing QGI schemes.
- To enable large-scale geographical applications of QGI.
Main Methods:
- Utilizing frequency-correlated photon pairs for QGI.
- Transforming frequency correlation into position-time correlation.
- Realizing QGI in the time domain for fiber distribution.
Main Results:
- Demonstrated a new QGI scheme based on frequency correlation.
- Successfully achieved long-distance QGI over 50 km of optical fiber.
- Showcased the preservation of frequency correlation in optical fibers.
Conclusions:
- The proposed scheme enables long-distance QGI by leveraging frequency-correlated photons.
- This method overcomes the fiber non-compatibility issue of traditional QGI.
- The findings pave the way for large-scale geographical QGI applications.
