Exploring Macroscopic Quantum Mechanics in Optomechanical Devices
Recent state-of-the-art technologies in fabricating low-loss optical and mechanical components have significantly motivated the study of quantum-limited measurements with optomechanical devices. Such research is the main subject of this thesis. In the first part, the author considers various approaches for surpassing the standard quantum limit for force measurements. In the second part, the author proposes different experimental protocols for using optomechanical interactions to explore quantum behaviors of macroscopic mechanical objects. Even though this thesis mostly focuses on large-scale laser interferometer gravitational-wave detectors and related experiments, the general approaches apply equally well for studying small-scale optomechanical devices.
The author is the winner of the 2010 Thesis prize awarded by the Gravitational Wave International Committee.
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2 Quantum Theory of GravitationalWave Detectors
3 Modifying Input Optics Double SqueezedInput
4 Modifying TestMass Dynamics Double Optical Spring
5 Measuring a Conserved Quantity Variational Quadrature Readout
6 MQM With ThreeMode Optomechanical Interactions
7 Achieving the Ground State and Enhancing Optomechanical Entanglement
8 Universal Entanglement Between an Oscillator and Continuous Fields
9Nonlinear Optomechanical System for ProbingMechanical Energy Quantization
10 State Preparation NonGaussian Quantum State
11 Probing Macroscopic Quantum States
12 Conclusions and Future Work