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Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Controlling quantum many-body dynamics in driven Rydberg atom arrays.

D Bluvstein1, A Omran1,2, H Levine1

  • 1Department of Physics, Harvard University, Cambridge, MA 02138, USA.

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Summary
This summary is machine-generated.

Researchers stabilized quantum many-body scars in interacting qubits using periodic driving. This method controls complex quantum dynamics and shows potential for quantum information science applications.

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Area of Science:

  • Quantum physics
  • Many-body systems
  • Quantum dynamics

Background:

  • Controlling nonequilibrium quantum dynamics in many-body systems is difficult due to thermalization.
  • Interactions in quantum systems often lead to chaotic spreading in Hilbert space.

Purpose of the Study:

  • Investigate nonequilibrium dynamics after rapid quenches in strongly interacting qubit systems.
  • Explore methods to stabilize quantum many-body scars.

Main Methods:

  • Utilized a programmable quantum simulator with Rydberg atom arrays.
  • Applied periodic driving to a many-body system of 3 to 200 qubits.
  • Studied systems in one and two spatial dimensions.

Main Results:

  • Demonstrated stabilization of coherent revivals linked to quantum many-body scars.
  • Observed a robust subharmonic response resembling discrete time-crystalline order.
  • Mapped Hilbert space dynamics, geometry, phase diagrams, and system-size dependence.

Conclusions:

  • Periodic driving offers a new way to steer complex dynamics in many-body systems.
  • This control of quantum dynamics has potential applications in quantum information science.