By Edik U. Rafailov

During this monograph, the authors tackle the physics and engineering including the most recent achievements of effective and compact ultrafast lasers in accordance with novel quantum-dot buildings and units. Their process includes a huge variety of laser structures, whereas bearing in mind not just the actual and experimental elements but in addition the a lot wanted modeling instruments, therefore delivering a holistic knowing of this scorching subject

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C) (b) Electron spin echo envelope modulation (ESEEM) for Hahn echo of an NV center, showing collapses and revivals due to 13C nuclear spin bath; (c) ESEEM for higher magnetic fields where collapses are suppressed. 8 NV center with two 13C nuclei in the first coordination shell. (a) NV center in the diamond lattice including the first coordination shell of carbon atoms, two of which are 13C isotopes; (b) Spin energy level spectrum including electron spin mS = 0, −1 (|0〉e, |1〉e) levels, times the four levels corresponding to the two nuclear spins with (a) I = ½.

13 Quantum state tomogra- phy – Rabi signal. (a) Bloch sphere illustrating Rabi oscillations for quantum state tomography (see text). Here, the main density matrix entries of a Φ− state (green arrow) have been transferred onto the working transition rf1 (Bloch sphere), where the Rabi oscillations are performed around (a) (b) (c) the x axis (black line) and the y axis (red line); (b) Tomography of Φ+; (c) Actual measurement data of the Rabi oscillations (z-components of quantum states) for Φ+ and Φ− Bell states that lead to the state reconstruction shown in panel (a, upper part) and panel (b, lower part).

The bare nuclear spin coherence (red arrow) survives longest; (c, d) Decay of the coherence of GHZ and W states, respectively, for increasing free evolution time. For the GHZ state, the decay of the single coherence (off-diagonal density matrix entry) is shown, whereas for the W state three coherences decay (for color coding, see panel b). 1 By ensuring that the ZPL emission is resonant with a cavity mode in the strong Purcell regime, all of the emission can be directed to be on the ZPL [38]. 7 (a, b) Schematics of the (a) input/output light-collection system and (b) coupling to the waveguide structure; (c) Optical images of the incoming and outgoing 532 nm laser light between pairs of 45 ° mirrors facing each other in the bulk and (d) coupled through the bridge structure.

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