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Teleportation in a noisy environment: a quantum trajectories approach
Gabriel G Carlo1, Giuliano Benenti, Giulio Casati
1Center for Nonlinear and Complex Systems, Università degli Studi dell'Insubria and Istituto Nazionale per la Fisica della Materia, Unità di Como, Via Valleggio 11, 22100 Como, Italy. gabriel.carlo@unisubria.it
Physical Review Letters
|February 3, 2004
Summary
This study explores quantum teleportation fidelity using quantum logic gates and a generalized amplitude damping channel. The quantum trajectories approach effectively simulates these complex quantum information protocols in noisy environments.
Area of Science:
- Quantum Information Science
- Quantum Computing
- Quantum Communication
Background:
- Quantum teleportation protocols require long-distance entanglement.
- Noisy environments degrade quantum system performance.
- Generalized amplitude damping models environmental noise effects.
Purpose of the Study:
- To investigate the fidelity of quantum teleportation.
- To model the impact of a noisy environment on quantum logic gates used for entanglement.
- To assess the suitability of the quantum trajectories approach for simulating quantum information protocols.
Main Methods:
- Utilizing quantum logic gates to generate long-distance entanglement.
- Employing a generalized amplitude damping channel to simulate environmental noise.
- Applying the quantum trajectories approach for simulating open quantum systems.
Main Results:
- Demonstrated the effectiveness of the quantum trajectories approach.
- Successfully simulated open quantum systems with up to 24 qubits.
- Quantified the fidelity of quantum teleportation under realistic noisy conditions.
Conclusions:
- The quantum trajectories approach is effective for simulating quantum information protocols.
- This method is suitable for modeling quantum systems in realistic, noisy environments.
- The study provides insights into maintaining quantum teleportation fidelity.