Abstract
We propose a technique for robust optomechanical state transfer using phase-tailored composite pulse driving with constant amplitude. Our proposal is inspired by coherent control techniques in lossless driven qubits. We demonstrate that there exist optimal phases for maximally robust excitation exchange in lossy strongly-driven optomechanical state transfer. In addition, our proposed composite phase driving also protects against random variations in the parameters of the system. However, this driving can take the system out of its steady state. For this reason, we use the ideal optimal phases to produce smooth sequences that both maintain the system close to its steady state and optimize the robustness of optomechanical state transfer.
Highlights
The essence of optomechanical systems (OMS) is the coupling between light and mechanical motion
The motion of the mechanical oscillator can be cooled by tuning the laser that pumps the cavity[19,20,21,22], leading to experiments where a nano-oscillator is cooled to its quantum-mechanical ground state[23,24,25]
Previous works propose diverse techniques to enhance optomechanical cooling, for example, by dynamically modifying the damping[26], using squeezed light[27,28,29,30], feedback-controlled light[31,32], or considering the effects of non-Markovian evolution[33]. These developments show that optomechanical effects allow control over quantum optical and mechanical states leading to exciting proposals to use these systems as transducers[34,35,36,37,38,39]
Summary
We propose a technique for robust optomechanical state transfer using phase-tailored composite pulse driving with constant amplitude. Previous works propose diverse techniques to enhance optomechanical cooling, for example, by dynamically modifying the damping[26], using squeezed light[27,28,29,30], feedback-controlled light[31,32], or considering the effects of non-Markovian evolution[33] These developments show that optomechanical effects allow control over quantum optical and mechanical states leading to exciting proposals to use these systems as transducers[34,35,36,37,38,39]. Our proposal relies on constant-amplitude composite phase-dependent pumping to achieve robust optomechanical state transfer This phase-dependent driving produces interference in the evolution of cavity and mechanical quantum states.
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