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Superradiance lattice.

Da-Wei Wang1, Ren-Bao Liu2, Shi-Yao Zhu3

  • 1Texas A&M University, College Station, Texas 77843, USA and Department of Physics and Centre for Quantum Coherence, The Chinese University of Hong Kong, Hong Kong, China.

Physical Review Letters
|February 14, 2015
PubMed
Summary
This summary is machine-generated.

Researchers created a superradiance lattice (SL) in momentum space using timed Dicke states and electromagnetically induced transparency (EIT). This novel quantum lattice enables observation of unique quantum dynamics and exploration of higher dimensions.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Condensed matter physics

Background:

  • Dicke states describe collective atomic behavior.
  • Electromagnetically induced transparency (EIT) enables coherent control of light-matter interactions.
  • Momentum space lattices are crucial for studying quantum phenomena.

Purpose of the Study:

  • To propose and theoretically investigate a novel quantum lattice in momentum space.
  • To demonstrate the formation of a superradiance lattice (SL) using timed Dicke states and EIT.
  • To explore the potential of the SL for observing quantum dynamics and novel physics.

Main Methods:

  • Utilizing timed Dicke states of three-level atoms.
  • Employing electromagnetically induced transparency (EIT) with a standing wave coupling field.
  • Analyzing the effects of detuning in the standing wave to create an effective force in momentum space.

Main Results:

  • The proposed superradiance lattice (SL) allows for the observation of quantum lattice dynamics.
  • Observed phenomena include Bloch oscillations, Wannier-Stark ladders, Bloch band collapsing, and dynamic localization.
  • A two-dimensional SL serves as a platform for Dirac physics, analogous to graphene.

Conclusions:

  • The superradiance lattice (SL) offers a new paradigm for quantum simulation in momentum space.
  • The SL can be extended to higher dimensions, opening avenues for exploring new physics.
  • This work provides a theoretical framework for experimentally realizing and utilizing momentum space quantum lattices.