High-efficiency quantum state transfer and quantum memory using a mechanical oscillator

Abstract

We analyze an optomechanical system that can be used to efficiently transfer a quantum state between an optical cavity and a distant mechanical oscillator coupled to a second optical cavity. We show that for a moderate mechanical Q-factor it is possible to achieve a transfer efficiency of $99.4\%$ by using adjustable cavity damping rates and destructive interference. We also show that the quantum mechanical oscillator can be used as a quantum memory device with an efficiency of $96\%$ employing a pulsed optomechanical coupling. Although the mechanical dissipation slightly decreases the efficiency, its effect can be significantly reduced by designing a high-Q mechanical oscillator.

7 pages and 5 figures; Published version

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• Entanglement of microwave and optical fields using electrical capacitor loaded with plasmonic graphene waveguide
• Stationary Bipartite Entanglement in Hybrid Optomechanical cavities
• Investigating entropic dynamics of multiqubit cavity QED system
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• Accelerated Gaussian quantum state transfer between two remote mechanical resonators
• Exploring quantum correlations in a hybrid optomechanical system
• Quantum State Transfer between Distant Cavity-Optomechanics Connected via Fiber