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Heralded Quantum Entanglement between Distant Matter Qubits.

Wen-Juan Yang1, Xiang-Bin Wang2

  • 11] State Key Laboratory of Low Dimensional Quantum Physics, Tsinghua University, Beijing 100084, People's Republic of China [2] Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.

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|June 5, 2015
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Summary
This summary is machine-generated.

We demonstrate a novel method for creating quantum entanglement between distant matter qubits using specific atomic systems without needing photon interference. This research also develops a theory for non-monochromatic light and finite interaction times.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Quantum Optics

Background:

  • Quantum entanglement is crucial for quantum computing and communication.
  • Realizing entanglement between distant matter qubits is a significant challenge.
  • Existing methods often rely on complex photon interference techniques.

Purpose of the Study:

  • To propose a new scheme for heralded quantum entanglement between distant matter qubits.
  • To avoid the need for photon interference in the entanglement process.
  • To develop a general theoretical framework for light-matter interactions.

Main Methods:

  • Utilizing two Lambda (Λ) atom systems for entanglement generation.
  • Proposing a scheme that bypasses the requirement of photon interference.
  • Developing a theoretical model for the outcome state considering non-monochromatic light and finite interaction times.

Main Results:

  • A feasible scheme for heralded quantum entanglement between two distant matter qubits is presented.
  • The proposed method eliminates the need for photon interference, simplifying experimental implementation.
  • A general theory is established for analyzing the outcome state under realistic conditions of light and time.

Conclusions:

  • The proposed scheme offers a practical pathway towards robust quantum entanglement for quantum networks.
  • The theoretical advancements provide tools for understanding and optimizing light-matter interactions in quantum systems.
  • This work contributes to the advancement of scalable quantum information processing.