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Updated: Jun 14, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Evolution of Propagating Coherent Pulses Driving a Single Superconducting Artificial Atom
A V Vasenin1,2, Sh V Kadyrmetov1, A N Bolgar1
1Laboratory of Artificial Quantum Systems, <a href="https://ror.org/00v0z9322">Moscow Institute of Physics and Technology</a>, 141701 Dolgoprudny, Russia.
Physical Review Letters
|August 30, 2024
Summary
We studied how electromagnetic waves interact with superconducting artificial atoms in waveguides. The transmitted field
Area of Science:
- Quantum optics
- Superconducting circuits
- Solid-state physics
Background:
- Superconducting artificial atoms coupled to waveguides exhibit quantum phenomena like Rabi oscillations.
- Understanding this interaction is key to developing quantum technologies.
Purpose of the Study:
- To experimentally investigate the time-dependent behavior of electromagnetic fields transmitted through a waveguide coupled to a superconducting transmon.
- To analyze how the field's evolution reveals information about the artificial atom.
Main Methods:
- Experimental setup involving a waveguide and a strongly coupled transmon (superconducting artificial atom).
- Measurement of the time-dependent transmitted field.
- Application of input-output theory for analysis.
- Deduction of incoherent radiation dynamics using the first-order correlation function.
Main Results:
- Observed Rabi oscillations in the transmon due to photon absorption and stimulated emission.
- Experimental results for scattered fields showed good agreement with input-output theory predictions.
- Demonstrated that the time evolution of the transmitted field contains comprehensive information about the coupled atom.
Conclusions:
- The interaction between electromagnetic fields and superconducting artificial atoms is well-described by input-output theory.
- The time evolution of the transmitted field serves as a complete probe of the atom's quantum state.
- Incoherent radiation dynamics can be effectively deduced from field correlation functions.
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