What does "Photon-assisted Transition" mean?

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Photon-assisted transitions are processes that occur when light (photons) helps particles move between different energy levels in a system. This happens in materials that are affected by light, such as certain quantum systems.

In these transitions, particles can gain energy from the incoming light, which allows them to jump to a higher energy state. This effect is important in various areas of physics, especially in understanding how quantum systems respond to light.

When a system is driven by two or more sources of light, the different frequencies of these light sources can have a significant impact on how the particles behave. For example, the interaction between light and particles can affect their movement and energy levels in interesting ways.

Overall, photon-assisted transitions help scientists study and manipulate the behavior of particles in quantum systems, revealing important insights into their dynamics.