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Related Experiment Videos

Entanglement reciprocation between qubits and continuous variables.

Jinhyoung Lee1, M Paternostro, M S Kim

  • 1Department of Physics and Quantum Photonic Science Research Center, Hanyang University, Seoul 133-791, Korea.

Physical Review Letters
|April 12, 2006
PubMed
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Entanglement transfer between qubits and continuous-variable systems is demonstrated. One entangled qubit (ebit) can be fully transferred to two continuous-variable systems and retrieved, showing quasisteady state dynamics.

Area of Science:

  • Quantum Information Science
  • Quantum Optics
  • Quantum Entanglement

Background:

  • Entanglement is a key quantum resource.
  • Transferring entanglement between different quantum systems is crucial for quantum technologies.
  • Continuous-variable (CV) systems offer unique properties for quantum information processing.

Purpose of the Study:

  • To investigate the transfer of entanglement between qubit and CV systems.
  • To demonstrate the feasibility of entanglement transfer and retrieval.
  • To explore the deposition of multiple entangled qubit units (ebits).

Main Methods:

  • Utilizing maximally entangled qubit states.
  • Employing pure separable Gaussian fields with high excitation for CV systems.

Related Experiment Videos

  • Analyzing entanglement dynamics in a quasisteady state regime.

    • Main Results:

    • Full transfer of one ebit from qubits to two CV systems was achieved.
    • Successful retrieval of entanglement back to the qubit system was demonstrated.
    • The deposition of multiple ebits was shown possible.

    Conclusions:

    • Entanglement can be effectively transferred and retrieved between qubit and CV systems.
    • The process occurs in a quasisteady state, indicating stability.
    • This research advances the understanding of hybrid quantum systems.