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Updated: Jul 15, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

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Published on: June 8, 2018

Dual-species matter qubit entangled with light.

S-Y Lan1, S D Jenkins, T Chanelière

  • 1School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430, USA.

Physical Review Letters
|May 16, 2007
PubMed
Summary

We developed a new atomic qubit using a cold mixture of Rubidium isotopes (85Rb-87Rb) entangled with an optical qubit. This system offers a robust building block for quantum networks.

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Area of Science:

  • Quantum Information Science
  • Atomic Physics
  • Quantum Networking

Background:

  • Quantum networks require robust and scalable qubit interfaces.
  • Atomic systems offer potential for stable quantum information processing.

Purpose of the Study:

  • To propose and demonstrate a novel atomic qubit system.
  • To create an entanglement between an atomic qubit and an optical qubit.
  • To establish a foundational element for quantum network construction.

Main Methods:

  • Utilizing a cold atomic ensemble of 85Rb-87Rb isotopes.
  • Implementing a frequency-encoded optical qubit.
  • Entangling the atomic and optical qubit states.

Main Results:

  • Successful demonstration of an atomic qubit based on a cold 85Rb-87Rb isotopic mixture.
  • Establishment of entanglement between the atomic qubit and a frequency-encoded optical qubit.
  • Development of an interface between an atomic qubit and a single spatial light mode.

Conclusions:

  • The proposed atomic qubit system provides an interferometrically robust element.
  • Independent addressing of atomic qubit states is achievable.
  • This work lays the groundwork for building advanced quantum networks.