Quantum Physics of Light and Matter

Luca Salasnich

Luca Salasnich

Luca Salasnich

Wei Qin, Anton Frisk Kockum, Carlos Sánchez Muñoz +2 more

The interaction of light and matter at the single-photon level is of central importance in various fields of physics, including, e.g., condensed matter physics, astronomy, quantum optics, and quantum information. Amplification of such quantum light–matter interaction can be highly beneficial to, e.g., improve device performance, explore novel phenomena, and understand fundamental physics, and has therefore been a long-standing goal. Furthermore, simulation of light–matter interaction in the regime of ultrastrong coupling, where the interaction strength is comparable to the bare frequencies of the uncoupled systems, has also become a hot research topic, and considerable progress has been made both theoretically and experimentally in the past decade. In this review, we provide a detailed introduction of recent advances in amplification of quantum light–matter interaction and simulation of ultrastrong light–matter interaction, particularly in cavity and circuit quantum electrodynamics and in cavity optomechanics.

Alan V. Durrant

Yanko Todorov, Carlo Sirtori

Future systems for quantum information processing will rely on coherent quantum phenomena, such as the coupling between light and matter. Using a quantum well within a capacitor to study how atomic physics and condensed matter physics are linked, researchers suggest a device architecture for semiconductor-based quantum processing.