Akira Furusawa 
Quantum States of Light 

This book explains what quantum states of light look like. Of special interest, a single photon state is explained by using a wave picture, showing that it corresponds to the complementarity of a quantum. Also explained is how light waves are created by photons, again corresponding to the complementarity of a quantum. The author shows how an optical wave is created by superposition of a ‘vacuum’ and a single photon as a typical example. Moreover, squeezed states of light are explained as ‘longitudinal’ waves of light and Schrödinger’s cat states as macroscopic superposition states.

Cuprins

1. Quantum states of light.- 1-1 Quantum optics.- 1-2 Coherent states.- 1-3 Balanced homodyne measurements.- 1-4 Single-photon state.- 1-5 Fock states.- 1-6 Super position of a vacuum and a single photon.- 1-7 Coherent states and Schrodinger’s cat states.- 1-8 Wigner function.- 1-9 Super position of a vacuum and a two-photon state.- 1-10 Squeezed states.- 1-11 Squeezing operation.- 1-12 Quantum entanglement.- 2. Generation of quantum states of light.- 2-1 Generation of coherent states.- 2-2 Generation of squeezed states.- 2-3 Generation of a single-photon state.- 2-4 Generation of Schrodinger’s cat states.- 2-5 Generation of superposition of Fock states.- 2-6 Generation of quantum entanglement.- 3. Quantum operations for quantum states of light.- 3-1 Various quantum operations.- 3-2 Quantum teleportation.- 3-3 Quantum gate teleportation.