Quantum Physics

Single photons And Quantum effects

Single photons:- The history of single-photon technology is brief yet eventful. The concept of a photon was first proposed less than a century ago to solve fundamental physics problems. Since then, the field has grown rapidly and at a breakneck pace. Simultaneously, the number of applications that require single photons or single-photon detection has increased.

The development of single-photon sources and single-photon detectors has been intimately linked, as a thorough understanding of detectors is impossible without first researching sources, and vice versa.

Quantum effects:- An effect that cannot be explained using traditional physics (classical mechanics, electrodynamics, etc.) and must instead be explained using quantum mechanics. Interference between electrons is a quantum effect in this sense. Quantum entanglement is a phenomenon that occurs when two particles are entangled. The decay of radioactive matter is a quantum effect. However, while being a quantum experiment involving subatomic particles, the Rutherford experiment (scattering of alpha particles on nuclei) can be described using classical physics and electrostatic force.