Download Elements of Quantum Information by Wolfgang P. Schleich, Herbert Walther PDF

By Wolfgang P. Schleich, Herbert Walther

'Elements of Quantum details' introduces the reader to the interesting box of quantum details processing, which lives at the interface among desktop technological know-how, physics, arithmetic, and engineering. This interdisciplinary department of technological know-how flourishes at the use of quantum mechanics as a source for top strength glossy purposes. With its extensive insurance of experiments, functions, and really expert subject matters - all written by means of well known specialists - 'Elements of Quantum info' offers an integral updated account of the state-of-the-art of this speedily advancing box and takes the reader immediately as much as the frontiers of present learn. The articles have first seemed as a unique factor of the magazine 'Fortschritte der Physik/Progress of Physics'. considering the fact that then, they've been conscientiously up to date. The e-book should be an inspiring resource of knowledge and perception for an individual discovering and focusing on experiments and thought of quantum info.

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A new jump occurs for pump parameters θ > 3π. bution P(n) at photon numbers nl and nh (nl < nh ); see Fig. 3. The phenomenon of two coexisting maxima in P(n) was also studied in a semiheuristic Fokker-Planck (FP) approach [20]. There, the photon number distribution P(n) is replaced by a probability function P(ν, τ ) with continuous variables τ = t/τcav and ν = n/Nex , the latter replacing the photon number n. The 1, can be constructed by means steady-state solution obtained for P(ν, τ ), τ of an effective potential V (ν) showing minima at positions where maxima of the probability function P(ν, τ ) are found.

8 shows a simulation of a sequence of 20 pulses of the pumping atoms in which an average of seven excited atoms per pulse are present. 2). Below the pulse sequences, two distributions show the probability of finding 0–5 atoms (and hence photons) per pulse in the cavity. Under the trapping condition, only a single emission event occurs, which produces a single lower-state atom, leaving a single photon in the cavity. As during an atom pulse the atom-cavity system is in the trapping condition, the emission probability is reduced to zero after that and the photon number is stabilized.

Radiation with sub-Poissonian photon statistics and even photon number states; this is the case even when Poissonian pumping is used. This paper reviews the work on cavity quantum electrodynamics performed with the one-atom maser and with a single ion trap laser. We will start with the discussion of the one-atom maser. For a more detailed discussion of those experiments see also [1]. 2 Oscillatory Exchange of Photons Between an Atom and a Cavity Field (Strong Coupling) – the One-atom Maser or Micromaser The single-mode radiation field of the one-atom maser, or micromaser, is the prototype of an open driven quantum system.

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