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Tunable superradiance and quantum phase gate based on graphene wrapped nanowire
Optics Express
|September 15, 2015
Summary
Researchers explored quantum emitter interactions with graphene-wrapped nanowires. They demonstrated a tunable two-qubit quantum phase gate controlled by voltage, advancing quantum information processing.
Area of Science:
- Quantum optics
- Condensed matter physics
- Nanotechnology
Background:
- Graphene's unique electronic properties offer novel ways to control quantum systems.
- Quantum emitters coupled to plasmonic structures are crucial for quantum information processing.
Purpose of the Study:
- Investigate quantum emitter interactions with graphene-wrapped nanowires.
- Propose a tunable quantum phase gate based on observed phenomena.
Main Methods:
- Utilized Green's function technique to analyze the system.
- Solved eigenmodes for graphene-wrapped nanowires at varying Fermi levels.
- Observed Dicke subradiance and superradiance mediated by graphene.
Main Results:
- Successfully modeled the interaction between quantum emitters and graphene-wrapped nanowires.
- Demonstrated Dicke subradiance and superradiance.
- Proposed and theoretically realized a deterministic tunable two-qubit quantum phase gate.
Conclusions:
- Graphene-wrapped nanowires provide a promising platform for quantum interactions.
- The proposed quantum phase gate, tunable via external voltage, is beneficial for quantum information processing.
