Related Experiment Video
Updated: May 13, 2026
12:18
Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
Achieving maximum entanglement between two nitrogen-vacancy centers coupling to a whispering-gallery-mode
Siping Liu1, Jiahua Li, Rong Yu
1Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
Optics Express
|March 14, 2013
Summary
Researchers explored entanglement generation between two nitrogen-vacancy (NV) centers in diamond coupled to whispering-gallery modes (WGMs). Optimal parameter adjustment can maximize entanglement for quantum information engineering.
Area of Science:
- Quantum Physics
- Materials Science
- Nanotechnology
Background:
- Nitrogen-vacancy (NV) centers in diamond are promising qubits for quantum information processing.
- Coupling quantum emitters to optical resonators enhances light-matter interactions.
Purpose of the Study:
- To investigate entanglement generation between two NV centers coupled to microtoroidal resonator whispering-gallery modes (WGMs).
- To analyze the dynamics and degree of entanglement by calculating concurrence.
Main Methods:
- Microscopic master equation approach to calculate concurrence.
- Investigating the influence of coupling strength, NV center distance, frequency detuning, and initial state.
Main Results:
- Entanglement generation between two NV centers is demonstrated.
- System parameters significantly influence entanglement dynamics and degree.
- Maximum entanglement is achievable through parameter optimization.
Conclusions:
- Controllable parameters allow for maximizing entanglement between NV centers.
- Findings offer insights for developing solid-state cavity quantum electrodynamics (CQED) systems.
- Potential applications in quantum information engineering and quantum computing.
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