Entanglement teleportation via werner states

Area of Science:

• Quantum Information Science
• Quantum Communication

Background:

• Quantum teleportation enables the transfer of quantum states.
• Noisy quantum channels can degrade quantum information and entanglement.
• Understanding information and entanglement transfer is key for quantum communication.

Purpose of the Study:

• To investigate the transfer of entanglement and information during quantum teleportation through noisy channels.
• To analyze the impact of channel correlations and initial state purity on teleportation fidelity.
• To introduce and study a parameter quantifying correlation information dissipation.

Main Methods:

• Theoretical analysis of quantum teleportation protocols.
• Modeling of noisy quantum channels with quantum correlations.
• Introduction and analysis of the correlation information parameter.

Main Results:

• Quantum entanglement of the unknown state can be lost during teleportation, even with quantum-correlated channels.
• Correlation information dissipates linearly through noisy quantum channels.
• The purity of the initial state significantly influences the entanglement of the replica state.

Conclusions:

• Noisy channels pose a fundamental challenge to high-fidelity quantum teleportation.
• Preserving entanglement requires careful consideration of channel properties and initial state preparation.
• The purity of the initial state is a critical factor for successful quantum state transfer.