Quantum coherence and quantum correlation of two qubits mediated by a one-dimensional plasmonic waveguide.

Area of Science:

• Quantum Information Science
• Solid-State Physics
• Nanophotonics

Background:

• Quantum coherence and correlation are fundamental to quantum information processing.
• Plasmonic waveguides offer unique platforms for controlling quantum interactions.
• Understanding dissipation effects is crucial for maintaining quantum states.

Purpose of the Study:

• To investigate the dynamics of quantum coherence and correlation for two qubits coupled via a plasmonic waveguide.
• To derive analytical expressions for the dissipative dynamics of an initial X state.
• To explore the influence of initial state parameters and continuous driving on quantum properties.

Main Methods:

• Analytical derivation of dissipative dynamics for two qubits in an X state.
• Analysis of quantum coherence and correlation evolution.
• Examination of the effects of waveguide parameters, initial state configurations, and continuous driving.

Main Results:

• Quantum coherence and correlation dynamics are highly sensitive to initial state parameters.
• Plasmonic waveguides can induce quantum coherence and correlation from product states.
• Steady quantum correlation is achievable at specific distances, while steady quantum coherence is attainable at any distance under continuous driving.
• Detuning effects on dissipation-driven quantum properties were explored.

Conclusions:

• Plasmonic waveguides provide a viable mechanism for generating and controlling quantum coherence and correlation.
• The interplay between initial states, waveguide properties, and driving is key to tailoring quantum dynamics.
• This work contributes to the development of quantum technologies utilizing plasmonic systems.