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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Published on: September 5, 2019

Circuit QED bright source for chiral entangled light based on dissipation.

Fernando Quijandría1, Diego Porras, Juan José García-Ripoll

  • 1Instituto de Ciencia de Materiales de Aragón y Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, Zaragoza E-50012, Spain.

Physical Review Letters
|September 3, 2013
PubMed
Summary

We developed a tunable quantum simulation framework using circuit QED systems to study critical dissipative models. This method efficiently accesses many-body correlations and generates chiral entangled light.

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Area of Science:

  • Quantum simulation
  • Quantum optics
  • Condensed matter physics

Background:

  • Dissipative quantum systems are crucial for understanding complex phenomena.
  • Circuit Quantum Electrodynamics (QED) provides a powerful platform for quantum simulations.
  • Superconducting qubits offer robust quantum information processing capabilities.

Purpose of the Study:

  • To present a scalable and tunable framework for quantum simulation of critical dissipative models.
  • To map the many-body state of cavities to propagating photons.
  • To enable efficient access to correlations and generation of entangled light.

Main Methods:

  • Utilizing a circuit QED cavity array interacting with driven superconducting qubits.
  • Mapping the strongly correlated many-body state of cavities to the state of propagating photons in a transmission line.
  • Leveraging collective phenomena and breaking of reflection symmetry.

Main Results:

  • Demonstration of a scalable and tunable quantum simulation framework.
  • Efficient method for accessing correlations in many-body systems.
  • Generation of a bright source of chiral entangled light with controllable directionality and entanglement.

Conclusions:

  • The presented framework offers a novel approach to quantum simulation of dissipative models.
  • The mapping to propagating photons provides an efficient tool for studying quantum correlations.
  • The generated chiral entangled light has potential applications in quantum information processing and metrology.