kvantteknik

Kvantteknik (quantum technology) is the discipline that develops devices and systems that exploit quantum phenomena such as superposition, entanglement, and quantum interference to perform tasks with advantages over classical methods.

The main subfields are quantum computing, quantum communication, quantum sensing (metrology), and quantum simulation. Hardware platforms include superconducting circuits, trapped ions, photonic systems, spin qubits in semiconductors, and neutral atoms.

Applications range from powerful quantum computers for certain problem classes to secure quantum communication, high-precision sensors for navigation and timing, and quantum simulators that model complex quantum systems in chemistry and materials science. Most devices are in the noisy intermediate-scale (NISQ) stage and not yet broadly deployed.

Key challenges include qubit coherence and gate fidelity, implementing scalable quantum error correction, integrating quantum devices with classical control systems, reducing costs, and establishing standards for interoperability and security.

The field is supported by university research, industry collaboration, and public funding in Europe and Sweden, with ongoing programs to train personnel and translate advances into pilot projects and prototype systems. Kvantteknik is expected to grow as hybrid quantum-classical solutions mature.