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Updated: Jun 3, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Preservation of bipartite pseudoentanglement in solids using dynamical decoupling
Ya Wang1, Xing Rong, Pengbo Feng
1Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.
Physical Review Letters
|March 17, 2011
Summary
Protecting quantum entanglement from decoherence is vital. Dynamical decoupling techniques successfully extended the lifetime of pseudoentangled states in silicon, a key step for quantum technologies.
Area of Science:
- Quantum Information Science
- Solid-State Physics
Background:
- Fragile quantum entanglement is susceptible to environmental noise (decoherence).
- Preserving entanglement is critical for advancing quantum technologies.
Purpose of the Study:
- To experimentally demonstrate the effectiveness of dynamical decoupling in protecting bipartite pseudoentanglement.
- To extend the coherence time of pseudoentangled states in a phosphorous donor silicon system.
Main Methods:
- Utilized a two-flip dynamical decoupling sequence.
- Experimentally implemented decoherence control in a phosphorous donor silicon system.
Main Results:
- Extended the lifetime of pseudoentangled states from 0.4 microseconds to 30 microseconds.
- Demonstrated significant preservation of entanglement against environmental decoherence.
Conclusions:
- Dynamical decoupling is a viable strategy for protecting quantum entanglement in solid-state systems.
- This work provides a pathway for robust quantum information processing using silicon-based quantum bits.
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