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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Electromagnetically induced transparency on a single artificial atom.

A A Abdumalikov1, O Astafiev, A M Zagoskin

  • 1RIKEN Advanced Science Institute, Wako, Saitama 351-0198, Japan. abdumalikov@zc.jp.nec.com

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

We observed electromagnetically induced transparency (EIT) in a single artificial atom. This quantum system controls microwave reflection, demonstrating potential for quantum information processing.

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Area of Science:

  • Quantum physics
  • Superconducting quantum systems
  • Electromagnetics

Background:

  • Electromagnetically induced transparency (EIT) is typically observed in dense atomic media.
  • Controlling quantum states in artificial systems is crucial for quantum technologies.

Purpose of the Study:

  • To experimentally observe EIT in a single artificial atom coupled to a transmission line.
  • To demonstrate the manipulation of quantum states and control of wave propagation using a single artificial atom.

Main Methods:

  • Coupling a single superconducting quantum system to a 1D transmission line.
  • Observing the suppression of reflected electromagnetic waves as a signature of EIT.
  • Modulating reflection and transmission of propagating microwaves.

Main Results:

  • Achieved EIT in a single artificial atom, evidenced by suppressed wave reflection.
  • Demonstrated nearly 100% modulation of microwave reflection and transmission.
  • Showcased full controllability of individual artificial atoms and their states.

Conclusions:

  • Single artificial atoms can exhibit EIT in open quantum systems.
  • This system functions as a switchable mirror for microwaves.
  • Potential applications in photonic quantum information processing and related fields.