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Quantitative characterization of highly efficient correlated photon-pair source using biexciton resonance
Optics Express
|May 4, 2016
Summary
Researchers characterized a highly efficient method for generating correlated photon pairs using biexciton-resonance hyper-parametric scattering (RHPS). This method is crucial for quantum information and communication technologies.
Area of Science:
- Quantum Optics
- Solid-State Physics
- Quantum Information Science
Background:
- Entangled states are vital for quantum information and communication.
- Efficient generation and characterization of correlated photon pairs are essential for studying entanglement.
Purpose of the Study:
- To characterize the efficiency of correlated photon pair generation using the biexciton-resonance hyper-parametric scattering (RHPS) method.
- To analyze the pump power dependence of photon counting and coincidence rates.
Main Methods:
- Utilized biexciton-resonance hyper-parametric scattering (RHPS) in a CuCl single crystal.
- Investigated pump power dependence of photon counting and coincidence rates under resonant excitation.
Main Results:
- Observed a transition from linear to quadratic pump power dependence in photon counting rates.
- Determined that one photon-pair is produced per 2 x 10^6 pump photons.
- Generation efficiency is comparable to established chi(3) parametric processes.
Conclusions:
- The RHPS method provides a highly efficient route for generating correlated photon pairs.
- Characterization confirms the method's viability for quantum applications.
- Efficiency is competitive with existing parametric processes.
