Quantum cavities represent a pivotal area in the field of quantum physics, offering a versatile platform for various quantum information processing tasks. High-Q cavities, in particular, have garnered significant attention due to their ability to facilitate photon transfer, entanglement creation, and quantum gate operations. Recent technological advancements have enabled the construction of high-Q cavities using photonic crystals, superconductors, and whispering gallery modes of materials like silica and quartz. These innovations have led to more precise and sophisticated experiments, addressing numerous unresolved questions in quantum physics. Despite these advancements, challenges remain in achieving distributed quantum communication and computation, highlighting the need for further investigation into the capabilities and limitations of quantum cavities.

This research topic aims to showcase the suitability of quantum cavities for various quantum mechanical applications. The main objectives include exploring their potential in quantum information processing, generating non-classical states of light for quantum metrology, and investigating quantum thermodynamics. Specific questions to be addressed include how to optimize photon transfer in cavity arrays, the role of embedded materials in controlling quantum states, and the feasibility of using quantum cavities as the architecture for a future quantum internet. By testing these hypotheses, the research aims to bridge existing gaps and advance our understanding of quantum cavities.

To gather further insights into the boundaries and limitations of quantum cavities, we welcome articles addressing, but not limited to, the following themes:

- Cavity quantum electrodynamics
- Quantum information processing and communication
- Quantum computation
- Quantum metrology
- Quantum optomechanics
- Quantum state generation
- Quantum thermodynamics

We emphasize that this list is not exhaustive, and contributions in related areas are also welcome. Through this collection, we aim to further our understanding and capabilities in the fascinating field of quantum cavities.

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Advancing Quantum Information Processing with High-Q Quantum Cavities