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Quantum teleportation mediated by surface plasmon polariton
Xin-He Jiang1, Peng Chen1, Kai-Yi Qian1
1National Laboratory of Solid-State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
Scientific Reports
|July 15, 2020
Summary
Researchers achieved quantum state teleportation between photons and surface plasmon polaritons (SPPs). This breakthrough demonstrates SPPs
Area of Science:
- Quantum optics and photonics
- Condensed matter physics
- Quantum information science
Background:
- Surface plasmon polaritons (SPPs) are collective electron excitations at metal-dielectric interfaces.
- While basic quantum properties of SPPs are known, advanced quantum information protocols remain largely undemonstrated.
- SPPs offer potential for novel quantum information processing due to their unique properties.
Purpose of the Study:
- To experimentally demonstrate quantum state teleportation between single photons and SPPs.
- To explore the feasibility of using SPPs in advanced quantum information protocols.
- To confirm the quantum nature of SPP-mediated teleportation.
Main Methods:
- Utilized polarization-entangled photon pairs.
- Employed coherent photon-plasmon-photon conversion on a metallic subwavelength hole array.
- Performed complete Bell-state measurements and active feed-forward techniques.
Main Results:
- Successfully realized quantum state teleportation between photons and SPPs.
- Achieved an average state fidelity of [Formula: see text] and process fidelity of [Formula: see text].
- Results confirmed the quantum nature of SPP-mediated teleportation, exceeding classical limits.
Conclusions:
- SPPs can be effectively utilized for quantum state teleportation.
- This work validates the quantum nature of SPP-mediated quantum information transfer.
- SPPs show promise for complex quantum protocols in hybrid photonic-plasmonic quantum networks.
