Quantum effects

Tahir Iqbal, Almas Bashir, Aqsa Tehseen

Zhihao Ma, Sen Zhu

Quantum effects play an important role in quantum measurement theory. The set of all quantum effects can be organized into an algebraical structure called effect algebra. In this paper, we study various topologies on the Hilbert space effect algebra and the projection lattice effect algebra. 1

Zhuo‐Liang Cao

As we know,quantum Zeno effect may appear when frequent measurements are performed on an unstable quantum system.This effect is well popular in quantum information and quantum computation.However,most of the previous discussions on quantum Zeno effect were focused on two-level systems.In order to comprehend quantum Zeno effect and prevent the transition in different quantum systems better,we verified the existence of quantum Zeno effect in three-level systems.Furthermore,the existence of quantum Zeno effect in multilevel systems could also be fully verified similarly.

Partha Pratim Mondal

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.

Gordon McCabe, Carfax Publishing