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Parity-Engineered Light-Matter Interaction.

J Goetz1,2, F Deppe1,2,3, K G Fedorov1,2

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Summary
This summary is machine-generated.

Researchers engineered a superconducting artificial atom to control its wave function parity using shaped microwave fields. This allows for precise control over light-matter interactions, enabling new quantum simulations.

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Area of Science:

  • Quantum physics and superconducting circuits
  • Quantum information processing and field theory

Background:

  • Parity, or inversion symmetry, is crucial in fundamental physics, including the standard model and quantum electrodynamics.
  • Controlling parity in light-matter interactions typically requires large field gradients, posing engineering challenges.

Purpose of the Study:

  • To engineer an artificial atom with controllable wave function parity.
  • To demonstrate in-situ selection of light-matter interaction parity using tailored microwave fields.
  • To explore applications in quantum simulations using superconducting circuits.

Main Methods:

  • Designed a potassium-like artificial atom using a superconducting flux qubit.
  • Utilized a resonator to provide effective orbital momentum for parity control.
  • Employed spatially shaped microwave fields to irradiate the artificial atom and select interaction parity.

Main Results:

  • Successfully controlled the wave function parity of the artificial atom.
  • Observed dipole and quadrupole selection rules for single state transitions.
  • Induced transparency in the system via longitudinal coupling.

Conclusions:

  • The work demonstrates a novel method for engineering tunable artificial multilevel atoms.
  • This advancement is promising for near-term superconducting circuits, particularly for quantum chemistry simulations.
  • Precise control over parity opens new avenues in quantum control and simulation.