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5.5 Real one-photon sources

Course video 40 of 56

One photon sources are important components in quantum optics, both in research laboratories and in applied quantum technologies. The lesson of this week will present the various kinds of one-photon sources available today, from heralded one photon sources to one photon sources on demand. You will learn how to use the multimode formalism presented in a previous lesson, to describe one-photon wave packets, in particular in the case of a spontaneously emitted photon. You will start with the presentation of a theoretical tool much used in quantum optics, the Heisenberg formalism. It will allow you to discover the formula expressing the probability of a double detection at two different times. You will also learn some `tricks of the trade' about Fourier transforms.

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