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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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High efficiency frequency upconversion of photons carrying orbital angular momentum for a quantum information
Optics Express
|May 14, 2015
Summary
We developed a quantum information interface that converts telecom-wavelength photons carrying orbital angular momentum (OAM) to the visible spectrum. This process preserves OAM states, enabling compatibility with quantum devices.
Area of Science:
- Quantum optics
- Quantum information science
- Photonics
Background:
- Orbital angular momentum (OAM) of light is crucial for quantum communication.
- A mismatch exists between telecom wavelengths (1550 nm) and visible wavelengths used by quantum devices (atoms, ions, NV centers).
Purpose of the Study:
- To demonstrate a quantum information interface for converting OAM photons from telecom to visible wavelengths.
- To enable seamless integration of telecom-based quantum communication with existing quantum information processing devices.
Main Methods:
- Utilizing frequency upconversion via sum-frequency generation.
- Converting infrared photons at 1558 nm carrying OAM to the visible regime (622.2 nm).
- Employing a pump beam with a Gaussian profile.
Main Results:
- Achieved high quantum conversion efficiency for frequency upconversion.
- Successfully transferred OAM states from telecom to visible wavelengths.
- Demonstrated preservation of OAM values during the upconversion process.
Conclusions:
- The developed quantum information interface effectively bridges the wavelength gap for OAM photon transmission.
- This technology facilitates the integration of fiber-optic quantum communication with atomic/ionic quantum computing platforms.
- Preservation of OAM states is key for maintaining quantum information integrity.
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