Introduction
Quantum computing is set to revolutionize various industries like AI by providing powerful computational capabilities that far exceed those of classical computers. However, this technological leap also introduces significant security risks, particularly to existing cryptographic systems that protect the world's digital information. Quantum cybersecurity emerges as a crucial field, promising enhanced security mechanisms through QKD and PQC to withstand quantum computing threats.

Advantages of Quantum Cybersecurity
Quantum cybersecurity technologies, such as QKD, offer the promise of unbreakable encryption by utilizing the principles of quantum mechanics. Unlike traditional methods, where security is based on the computational difficulty of certain mathematical problems, QKD uses the quantum properties of particles to ensure secure communication that can immediately detect any interception attempts. PQC provides algorithms that are resistant to quantum attacks, aiming to secure our digital infrastructure both now and in the future.

Necessity for Quantum-Resistant Solutions
The development of quantum computers poses a significant threat to the cryptographic standards currently protecting global communications, financial transactions, and government data. Quantum-resistant cryptographic methods are essential to prevent the quantum threat and safeguard information integrity in the forthcoming quantum era.

Current Problems and Future of Quantum Cybersecurity
While quantum cryptography offers robust security, it currently faces significant challenges such as high costs, limited range of operation, and complex integration with existing technologies. The future of quantum cybersecurity lies in overcoming these barriers and facilitating widespread adoption. Innovations in satellite quantum communications and the development of quantum repeaters are among the advances that could extend the range and feasibility of QKD systems.

Interoperability Challenges
A significant obstacle in the deployment of quantum cryptographic solutions is the lack of interoperability between different systems, which often use incompatible protocols and technologies. This challenge hinders the creation of a unified quantum-safe network necessary for global security.

Solutions and Challenges of Current Solutions
Addressing interoperability involves developing universal standards and protocols that can seamlessly integrate various quantum and classical cryptographic systems. The solution proposed includes creating adaptable interfaces and middleware capable of translating between different quantum cryptographic protocols. However, these solutions must navigate the sophisticated balance between maintaining high security and offering the flexibility to support a diverse ecosystem of technologies.

Conclusion
Quantum cybersecurity stands at the forefront of the next revolution in digital security. By addressing the challenges of interoperability and advancing the development of user-friendly, cost-effective quantum cryptographic systems, we can pave the way for a secure transition into the quantum computing age. This talk will explore these aspects, offering insights into both the current landscape and the future directions of quantum cybersecurity.