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Gradient Echo Quantum Memory in Warm Atomic Vapor
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Spectral-Topological Superefficient Quantum Memory.

N S Perminov1, S A Moiseev2

  • 1Kazan Quantum Center, Kazan National Research Technical University n.a. A.N.Tupolev-KAI, 10 K. Marx, Kazan, 420111, Russia.

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Summary
This summary is machine-generated.

We developed a universal spectral-topological method for quantum memory using controlled absorbers. This approach achieves over 99.9% quantum efficiency, crucial for quantum information science applications.

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Area of Science:

  • Quantum Information Science
  • Quantum Optics
  • Spectroscopy

Background:

  • Practical quantum information science demands high-efficiency quantum memory.
  • Existing quantum memory solutions face limitations in efficiency and broadband operation.

Purpose of the Study:

  • To propose a universal spectral-topological approach for realizing high-efficiency quantum memory.
  • To identify conditions for maximizing quantum efficiency across a broadband spectrum.

Main Methods:

  • Utilizing a small number of controlled absorbers.
  • Establishing spectral-topological matching conditions for absorber spectroscopic parameters.
  • Controlling the relative position (topology) of eigenfrequencies within the absorber spectrum.

Main Results:

  • Achieved super-high quantum efficiency exceeding 99.9%.
  • Ensured maximal efficiency in the broadband spectral range.
  • Demonstrated a universal approach applicable to quantum memory realization.

Conclusions:

  • The spectral-topological approach offers a pathway to highly efficient quantum memory.
  • The identified matching conditions are key to broadband high-efficiency operation.
  • The method is implementable with current microwave and optical technologies.