By Simon Gröblacher
Quantum results in macroscopic structures have lengthy been a fascination for researchers. over the last decade mechanical oscillators have emerged as a number one approach of selection for lots of such experiments. The paintings stated during this thesis investigates the consequences of the radiation-pressure strength of sunshine on macroscopic mechanical constructions. the elemental process studied is a mechanical oscillator that's hugely reflective and a part of an optical resonator. It interacts with the optical hollow space mode through the radiation-pressure strength. either the dynamics of the
mechanical oscillation and the homes of the sunshine box are changed via this interplay. The experiments use quantum optical instruments (such as homodyning and down-conversion) with the target of eventually displaying quantum habit of the mechanical middle of mass movement.
Of specific worth are the precise descriptions of a number of novel experiments that pave the way in which in the direction of this objective and are already shaping the sector of quantum optomechanics, specifically optomechanical laser cooling and powerful optomechanical coupling.
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24) and we finally arrive at an expression for the error-signal PDH = −2 Pc P± · Im R(ω)R ∗ (ω + ) − R ∗ (ω)R(ω − ) . 28) As can be seen from Fig. 4, the error-signal has a maximal slope and also crosses zero when the laser is on resonance. For a rigorous derivation of the Pound-DreverHall error-signal, including the case κ > , see [10]. (a) (b) Fig. 4 A schematic drawing for the Pound-Drever-Hall (PDH) locking technique is shown in a. A laser is phase-modulated using an electro-optical modulator (EOM), which is driven by a function generator (FG) at a frequency .