Related Experiment Video
Updated: May 13, 2026
09:46
Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
Published on: August 8, 2025
Quantum state engineering with nitrogen-vacancy centers coupled to low-Q microresonator.
Liu-Yong Cheng1, Hong-Fu Wang, Shou Zhang
1Center for the Condensed-Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
Optics Express
|March 14, 2013
Summary
We show how to create entanglement between nitrogen-vacancy (NV) centers in diamond using photons. This method enables efficient quantum state transfer and is feasible for scalable quantum computing.
Area of Science:
- Quantum Information Science
- Solid-State Physics
- Optics and Photonics
Background:
- Nitrogen-vacancy (NV) centers in diamond are promising solid-state qubits.
- Efficient entanglement generation and quantum state transfer are crucial for quantum networks.
- Integrating solid-state qubits with optical cavities is a key challenge.
Purpose of the Study:
- To demonstrate deterministic entanglement generation between NV centers.
- To achieve efficient quantum state transfer (QST) using NV centers.
- To explore the feasibility of these schemes for scalable quantum information processing.
Main Methods:
- Utilizing NV centers in diamond confined within separated microtoroidal resonators.
- Employing a single-photon input-output process for entanglement generation.
- Leveraging photon pulse polarization and NV electron spin states for control.
Main Results:
- Achieved high-fidelity entanglement generation for NV center qubits.
- Demonstrated high-fidelity photonic entangled states.
- Showed successful quantum state transfer between distant NV centers.
Conclusions:
- The proposed schemes are efficient and deterministic.
- The methods are feasible even with low-quality resonators and weak coupling.
- These advancements pave the way for large-scale quantum information processing using diamond-based systems.
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