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Fiber-compatible photonic feed-forward with 99% fidelity
Optics Express
|March 27, 2021
Summary
We developed a fiber-compatible measurement and feed-forward scheme for quantum technologies. This method achieved 99% fidelity in remote quantum state preparation, crucial for quantum internet development.
Area of Science:
- Quantum Information Science
- Optical Physics
- Quantum Communication
Background:
- Photonic quantum computation and quantum internet require fiber-based infrastructure.
- Existing quantum schemes often lack compatibility with current fiber networks.
Purpose of the Study:
- To present a fiber-compatible scheme for measurement and feed-forward.
- To benchmark the scheme's performance using remote preparation of quantum states.
Main Methods:
- Implemented a fiber-compatible measurement and feed-forward protocol.
- Utilized ultrafast optical switches for deterministic photon path control.
- Employed bulk passive polarization optics for state manipulation.
Main Results:
- Achieved a measurement and feed-forward fidelity of (99.0 ± 1)%.
- Successfully performed remote preparation of single-photon polarization states at telecom wavelengths.
- Corrected for experimental errors to ensure accurate fidelity measurement.
Conclusions:
- The developed scheme is highly effective for photonic quantum experiments.
- This method supports the integration of quantum technologies with existing fiber infrastructure.
- The approach is applicable to quantum computing, communication, and teleportation.
