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Sequential generation of entangled multiqubit states.

C Schön1, E Solano, F Verstraete

  • 1Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany.

Physical Review Letters
|October 4, 2005
PubMed
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This study presents a method for deterministically generating entangled multiqubit states using sequential coupling. Researchers can now create various quantum information states on demand, including W and Greenberger-Horne-Zeilinger states.

Area of Science:

  • Quantum Information Science
  • Atomic, Molecular, and Optical Physics

Background:

  • Entangled multiqubit states are crucial for quantum information processing.
  • Deterministic generation of these states remains a significant challenge.

Purpose of the Study:

  • To develop a general method for the deterministic generation of entangled multiqubit states.
  • To characterize all achievable states and provide a recipe for on-demand generation.

Main Methods:

  • Sequential coupling of an ancillary system to initially uncorrelated qubits.
  • Characterization of achievable states using matrix-product states.
  • Focus on single-photon time-bin qubits from an atom-cavity system.

Main Results:

  • A framework for deterministic generation of arbitrary multiqubit states is established.

Related Experiment Videos

  • The method is applicable to various sequential generation schemes.
  • Demonstrated generation of W, Greenberger-Horne-Zeilinger, and cluster states.

    • Conclusions:

    • The proposed method offers a versatile approach to generating complex entangled states.
    • This work facilitates the creation of essential quantum states for quantum computing and communication.