Abstract
This chapter begins with a brief description of methods of primary photon detection: the photoelectric effect, rectifying detection, photothermal effects, photon beam amplifiers, single-microwave-photon counting, and quantum nondemolition detection. The theory of photoelectric detection is applied to derive the connection between the statistics of the incident light field and the ejected photoelectrons. This is followed by a description of several electron multiplication schemes that convert the microscopic detection event into a classical, irreversible process that is registered as a count. The remaining topics are coincidence counting, and homodyne and heterodyne detection schemes.
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