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Pulsed Entanglement of Two Optomechanical Oscillators and Furry's Hypothesis
S Kiesewetter1, R Y Teh1, P D Drummond1
1Center for Quantum and Optical Science, Swinburne University of Technology, Melbourne 3122, Australia.
Physical Review Letters
|July 29, 2017
Summary
Researchers developed a method to entangle optomechanical oscillators using pulsed light. This technique efficiently transfers and retrieves quantum entanglement, enabling tests of decoherence in large, separated systems.
Area of Science:
- Quantum mechanics
- Optomechanics
- Quantum information science
Background:
- Entanglement is a key quantum phenomenon crucial for quantum information processing.
- Optomechanical systems offer a promising platform for studying macroscopic quantum states.
- Previous methods for entangling mechanical oscillators have faced limitations.
Purpose of the Study:
- To propose and analyze a novel strategy for generating entanglement between two spatially separated optomechanical oscillators.
- To investigate the efficient transfer and retrieval of quantum entanglement into mechanical modes.
- To explore the potential of this protocol for testing decoherence in macroscopic quantum systems.
Main Methods:
- Utilizing entangled radiation generated via down-conversion and stored in an optical cavity.
- Employing pulsed entanglement with optimally shaped temporal modes.
- Analyzing the quantum state evolution of the optomechanical system.
Main Results:
- Demonstrated efficient transfer of quantum entanglement into a mechanical mode.
- Showcased the ability to remove entanglement after a predetermined waiting time for measurement.
- Established a protocol for creating and manipulating entanglement in separated optomechanical oscillators.
Conclusions:
- The proposed strategy offers a viable method for entangling macroscopic mechanical oscillators.
- This protocol could facilitate new experimental tests of quantum mechanics in large, spatially separated systems.
- The findings contribute to the broader understanding of decoherence and its impact on quantum states.
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