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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Published on: August 2, 2019

Electromagnetically induced transparency with amplification in superconducting circuits.

Jaewoo Joo1, Jérôme Bourassa, Alexandre Blais

  • 1Institute for Quantum Information Science, University of Calgary, Alberta T2N 1N4, Canada.

Physical Review Letters
|September 28, 2010
PubMed
Summary
This summary is machine-generated.

Controlling electromagnetic field phases in atoms creates novel optical properties, enabling electromagnetically induced transparency with unique absorption and amplification bands. This phenomenon is demonstrated in superconducting fluxonium circuits.

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Fabrication and Characterization of Superconducting Resonators
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Fabrication and Characterization of Superconducting Resonators

Published on: May 21, 2016

Area of Science:

  • Quantum optics
  • Superconducting circuits

Background:

  • Electromagnetically induced transparency (EIT) typically exhibits a transparency window between two absorption bands.
  • Controlling the relative phases of electromagnetic fields is crucial for manipulating atomic properties.

Purpose of the Study:

  • To explore novel ways of engineering optical susceptibility using phase control in a Δ-configuration atomic system.
  • To investigate the potential of achieving EIT with a unique absorption-amplification band structure.

Main Methods:

  • Theoretical analysis of a Δ-configuration atomic system driven by electromagnetic fields.
  • Investigating the optical susceptibility under controlled relative-phase conditions.
  • Applying the theoretical framework to a fluxonium superconducting circuit interacting with a microwave field.

Main Results:

  • Demonstrated that relative-phase control of electromagnetic fields can engineer optical susceptibility in unprecedented ways.
  • Achieved a novel form of EIT where the transparency window is situated between an absorption and an amplification band.
  • Confirmed the feasibility of this phenomenon in a microwave-driven fluxonium superconducting circuit.

Conclusions:

  • Relative-phase control offers a powerful method for tailoring optical responses beyond traditional EIT.
  • The observed absorption-amplification-transparency-amplification-absorption (A-T-A) profile presents new opportunities for optical devices.
  • Fluxonium superconducting circuits are a viable platform for realizing these novel quantum optical phenomena.