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Related Experiment Video

Updated: Jun 3, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Optical pumping into many-body entanglement.

Jaeyoon Cho1, Sougato Bose, M S Kim

  • 1QOLS, Blackett Laboratory, Imperial College London, London SW7 2BW, United Kingdom.

Physical Review Letters
|March 17, 2011
PubMed
Summary
This summary is machine-generated.

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We demonstrate a method using optical pumping to create entangled atomic states. This technique allows systems to reach specific complex states, even in ion-trap experiments.

Area of Science:

  • Quantum optics
  • Atomic physics
  • Many-body physics

Background:

  • Entanglement is crucial for quantum information processing.
  • Controlling many-body quantum systems is challenging.
  • Spontaneous emission typically leads to decoherence.

Purpose of the Study:

  • To propose a scheme for driving atoms coupled to harmonic oscillators into an entangled steady state.
  • To show that arbitrary stabilizer states can be reached.
  • To identify practical physical implementations.

Main Methods:

  • Utilizing optical pumping to engineer atomic spontaneous emission.
  • Coupling atoms to harmonic oscillators.
  • Tailoring the optical pumping parameters.

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Main Results:

  • The proposed scheme drives the system to an entangled steady state.
  • Arbitrary stabilizer states can be asymptotically reached, irrespective of the initial state.
  • The scheme is applicable to various physical systems.

Conclusions:

  • Optical pumping provides a viable route to engineer specific entangled states in atomic systems.
  • The proposed method is robust against initial conditions.
  • Ion-trap systems offer a promising experimental platform for realizing this scheme.