Long distance multiplexed quantum teleportation from a telecom photon to a solid-state qubit

Area of Science:

• Quantum Information Science
• Quantum Communication
• Solid-State Physics

Background:

• Quantum teleportation is crucial for quantum networks, enabling qubit transfer without direct information exchange.
• Effective quantum teleportation requires transferring quantum information to stable matter qubits for processing.
• Existing methods face challenges in long-distance implementation and scalability.

Purpose of the Study:

• To demonstrate long-distance quantum teleportation from a photonic qubit to a matter qubit.
• To implement a system compatible with telecommunication networks for practical applications.
• To enhance the scalability and rate of quantum teleportation.

Main Methods:

• Teleportation of a photonic qubit at telecom wavelength to a matter qubit stored in a solid-state quantum memory.
• Utilizing an active feed-forward scheme with conditional phase shift on the retrieved qubit.
• Employing a time-multiplexing approach to increase the teleportation rate.

Main Results:

• Successful long-distance quantum teleportation from a photonic qubit to a solid-state matter qubit.
• Demonstration of an active feed-forward mechanism essential for the quantum teleportation protocol.
• Achieved time-multiplexing for enhanced teleportation rates and compatibility with telecommunication networks.

Conclusions:

• The demonstrated system is a significant step towards scalable, long-distance quantum communication.
• The integration with telecommunication networks paves the way for practical quantum network development.
• This work highlights the potential of solid-state quantum memories in advancing quantum information transfer.