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Dissipation-assisted quantum information processing with trapped ions.

A Bermudez1, T Schaetz2, M B Plenio1

  • 1Institut für Theoretische Physik, Albert-Einstein Alle 11, Universität Ulm, 89069 Ulm, Germany.

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Summary
This summary is machine-generated.

We developed a new method for quantum information processing in ion traps that uses dissipation to aid computations, even with realistic noise. This technique allows for controlled entanglement generation and scalable quantum simulations.

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Area of Science:

  • Quantum Information Science
  • Atomic, Molecular, and Optical (AMO) Physics
  • Quantum Computing

Background:

  • Realistic ion trap systems face decoherence due to factors like motional heating.
  • Exploiting dissipation for quantum information processing remains a significant challenge.
  • Controlling coherent and dissipative interactions is crucial for advanced quantum protocols.

Purpose of the Study:

  • To introduce a novel scheme for dissipation-assisted quantum information processing in ion traps.
  • To demonstrate the feasibility of overcoming decoherence through sympathetic cooling.
  • To enable controlled generation of entanglement and scalable quantum simulations.

Main Methods:

  • Implementing continuous sympathetic cooling to counteract trap heating.
  • Utilizing damped vibrational excitations to mediate both coherent and dissipative interactions.
  • Experimentally controlling the relative strength of coherent and dissipative effects.

Main Results:

  • Demonstrated that damped vibrational excitations can mediate coherent interactions despite decoherence.
  • Showcased the ability to exploit these excitations for collective dissipative effects.
  • Successfully controlled the relative strength of coherent and dissipative processes.

Conclusions:

  • The proposed scheme effectively performs dissipation-assisted quantum information processing in realistic ion traps.
  • This method allows for the coherent or dissipative generation of entanglement.
  • The approach is scalable for many-body quantum simulations in larger ion registers.