Download Advances in atomic physics : an overview by Claude Cohen-Tannoudji PDF

By Claude Cohen-Tannoudji

This e-book offers a finished review of the unbelievable advances noticeable in atomic physics over the past 50 years. The authors clarify how such development was once attainable via highlighting connections among advancements that happened at various occasions. They speak about the recent views and the hot examine fields that glance promising. The emphasis is positioned, now not on unique calculations, yet quite on actual principles. Combining either theoretical and experimental issues, the e-book might be of curiosity to quite a lot of scholars, academics and researchers in quantum and atomic physics.

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33) which is a linear superposition of the two states ±1/2. 31) corresponding to11 θ = ϕ = π/2. These superpositions of states are important because they are at the origin of quantum interference effects that will be mentioned throughout this book. The simple example of a spin 1/2 studied here clearly shows that linear superpositions of states appear when the spin magnetic moment has transverse components with respect to the direction of the static field, which is the quantization axis for defining the energy levels of the spin.

Conservation laws in atom-photon interactions are another important topic and are discussed in Sec. 3. They are a useful guide for understanding the important advances of atomic physics of the last few decades made through our ability to manipulate the internal and external degrees of freedom of atoms. The conservation of angular momentum explains the transfer of angular momentum from polarized photons to the internal degrees of freedom of atoms and is at the basis of the optical methods (double resonance and optical pumping) that are described in detail in Chap.

They have been extended to the optical domain and are now systematically used in all high precision spectroscopic and interferometric measurements, as this will be shown in Chap. 18. In Chap. 19, we will discuss also the extension of the concept of quantum interference to more general situations such as multi-particle quantum interference and entangled states. In Sec. 5, we finally consider the case of a two-level atom interacting with a broadband field. 5in ourbook 9 General background described as a fluctuating classical field.

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