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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Deterministic Fast Scrambling with Neutral Atom Arrays.

Tomohiro Hashizume1, Gregory S Bentsen2, Sebastian Weber3

  • 1Department of Physics and SUPA, University of Strathclyde, Glasgow G4 0NG, United Kingdom.

Physical Review Letters
|June 10, 2021
PubMed
Summary
This summary is machine-generated.

We developed deterministic quantum circuits for fast scrambling, creating many-body entanglement efficiently. These circuits are realizable in near-term neutral atom experiments, enabling programmable access to quantum scrambling dynamics.

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Area of Science:

  • Quantum physics
  • Quantum information science
  • Atomic physics

Background:

  • Fast scramblers are quantum systems exhibiting rapid growth of entanglement.
  • Achieving fast scrambling in controllable experimental platforms is a key challenge.
  • Near-term quantum devices offer potential for studying complex quantum dynamics.

Purpose of the Study:

  • To propose and investigate a family of deterministic quantum circuits for fast scrambling.
  • To demonstrate the feasibility of these circuits in near-term neutral atom experiments.
  • To enable direct experimental access to fast scrambling dynamics.

Main Methods:

  • Utilizing nearest-neighbor Rydberg interactions in neutral atom arrays.
  • Employing global single-qubit rotations.
  • Implementing shuffling operations with auxiliary tweezer arrays.
  • Constructing nonlocal interaction graphs for quantum information scrambling.

Main Results:

  • Demonstrated that three experimental tools are sufficient for fast scrambling.
  • Showcased the ability to generate nonlocal interaction graphs.
  • Achieved quantum information scrambling using logarithmically many parallel gate applications.
  • Established a programmable platform for studying fast scrambling dynamics.

Conclusions:

  • The proposed circuits are realizable in near-term neutral atom experiments.
  • These methods provide direct experimental access to fast scrambling.
  • The platform can be used to generate highly entangled states for various applications.