Welcome to the Experimental Quantum Optics and Quantum Information (EQOQI) Lab, led by Dr. Adetunmise Dada.
Our research bridges the boundaries of quantum optics, quantum information science, and photonic engineering, addressing some of the most pressing challenges and opportunities in next-generation quantum technologies.
Our Mission
At EQOQI, we focus on understanding and harnessing the quantum nature of light and matter to develop transformative applications in quantum communication, computation, and metrology. Our interdisciplinary approach integrates experimental, theoretical, and engineering methodologies towards creating scalable, efficient, and practical quantum systems.
Key Research Themes
1. Quantum Signal Detection and Spectroscopy
We investigate novel quantum measurement schemes, including polarimetry, generalized quantum measurements (POVMs), and weak-value amplification. These tools are applied to detect terahertz (THz) photons and perform quantum-enhanced time-domain spectroscopy. Recent advances include leveraging squeezed vacuum states for high-sensitivity THz sensing and using quantum weak measurements for enhanced precision in challenging noise environments.
Highlights:
- Development of electro-optical sampling techniques for single-cycle THz fields.
- Integration of quantum resources for spectroscopy with sub-noise-limited performance.
2. High-Dimensional Entanglement and Quantum Communication
Our work in high-dimensional entanglement explores the potential of quantum systems with more than two dimensions, enabling robust quantum key distribution and testing generalized Bell inequalities. Using orbital angular momentum (OAM) modes, we have demonstrated entanglement and Bell inequality violations in up to 12 dimensions, providing a framework for high-capacity and noise-resilient quantum communication.
Recent Highlights:
- First demonstration of generalized Bell inequality violation in high-dimensional quantum systems.
- Advancing entangled quantum networks with scalable high-dimensional protocols.
3. Single-Photon Sources and Quantum Dots
We harness quantum dots as on-demand sources of indistinguishable single photons for scalable quantum communication networks. By achieving resonance fluorescence at telecom wavelengths and mitigating dephasing mechanisms, we ensure compatibility with optical fiber infrastructure and enable long-distance quantum communication.
Highlights:
- Development of tunable single-photon sources with high brightness and indistinguishability.
- Flexible electronic triggering of photon emission for real-time integration into quantum circuits.
4. Short-wave Infrared (SWIR) Quantum Technologies
We explore the unique opportunities of the 2-micron spectral region for quantum communication. This includes polarization-entangled photon generation and quantum interference experiments that leverage reduced solar background noise and compatibility with hollow-core fiber technologies.
Highlights:
- Demonstration of polarization-entangled photons at 2.1 μm.
- Development of secure communication protocols using novel wavelengths.
Funding and Collaborations
The EQOQI Lab is supported by leading institutions, including the Royal Society, EPSRC (UK), and actively collaborates with international research centers and industry partners.
Join Us
Our lab is always looking for passionate researchers, collaborators, and students who want to push the boundaries of quantum science. Whether you are interested in theoretical exploration or experimental innovation, EQOQI provides a vibrant and inclusive environment for groundbreaking research. For more information please contact Dr Adetunmise Dada.