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Nonlinear Quantum Light Generation in Collective Spontaneous Emission.

Offek Tziperman1, Gefen Baranes2,3, Alexey Gorlach1

  • 1Technion-Israel Institute of Technology, Haifa 32000, Israel.

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Quantum emitters can transfer correlations to emitted light, creating useful photonic states for quantum error correction. This research explores collective spontaneous emission and its applications in quantum technologies.

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Area of Science:

  • Quantum optics
  • Quantum information science

Background:

  • Collective spontaneous emission involves multiple quantum emitters decaying into shared radiation modes, influencing emission rates.
  • Quantum correlations between emitters can be lost or preserved during emission into common modes.

Purpose of the Study:

  • To investigate the conditions under which quantum correlations are transferred from emitters to emitted light.
  • To explore the creation of specific photonic states for quantum computation and error correction using collective emission.

Main Methods:

  • Analyzing the multimode nature of collective spontaneous emission.
  • Incorporating factors like emitter positions, losses, interactions, and non-Markovian dynamics.
  • Studying systems including cavity QED, waveguide QED, and atomic arrays.

Main Results:

  • Identified conditions for preserving quantum correlations during collective emission.
  • Demonstrated the transfer of quantum correlations to the output light.
  • Showcased the generation of tailored photonic states (e.g., Gottesman-Kitaev-Preskill, Schrödinger-cat states).

Conclusions:

  • Collective spontaneous emission can be harnessed to generate valuable quantum light states.
  • Findings provide pathways for creating multiphoton quantum light for bosonic codes.
  • Applications include continuous-variable quantum computation, communication, and sensing.