Selected Effects in Quantum Optics

Abstract

In this chapter, we will explore some of the well-known quantum effects of light. These effects are essentially a consequence of the quantized nature of light and strongly dependent on its particle-like behavior. We will use the techniques developed in Chapters 6–11 to understand delicate the effects of light such as Casimir and Hanle effects and coherent trapping. While the Casimir effect is a consequence of vacuum fluctuations, the Hanle effect and coherent trapping are a consequence of quantum coherence. Among the known direct applications of quantum optics, ghost imaging involves quantum entanglement, while quantum lithography and quantum microscopy make use of rapidly oscillating quantum NOON states of light. All these effects are discussed in this chapter. They are expected to eventually expand the horizon of science and initiate new kinds of quantum devices. Moreover, these effects are stepping stones for understanding the classical-quantum barrier and may present new opportunities.