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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
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Exploration of multiphoton entangled states by using weak nonlinearities
Ying-Qiu He1, Dong Ding1,2, Feng-Li Yan1
1College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050024, China.
Scientific Reports
|January 12, 2016
Summary
We present a feasible method for creating multiphoton entangled states using linear optics and weak nonlinearities. This approach allows for entanglement of numerous photons with minimal error, making it highly practical.
Area of Science:
- Quantum optics
- Quantum information science
Background:
- Generating multiphoton entangled states is crucial for quantum information processing.
- Previous schemes often require complex interactions with nonlinearities, limiting feasibility.
Purpose of the Study:
- To propose a practical and feasible scheme for generating multiphoton entangled states.
- To explore the use of linear optics and weak nonlinearities for entanglement creation.
Main Methods:
- Utilizing linear optical components.
- Employing weak nonlinearities (Kerr nonlinearities) that induce small phase shifts.
- Analyzing error probabilities associated with homodyne measurement.
Main Results:
- The proposed scheme is more feasible than previous methods due to simplified nonlinear interactions.
- Maximal error probabilities can be minimized even for a large number of photons.
- The scheme demonstrates tractability for producing highly entangled states.
Conclusions:
- The presented scheme offers a viable pathway for generating multiphoton entangled states.
- The method is suitable for creating entangled states involving a significant number of photons.
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