Doctoral thesis
Open access

Rare-earth quantum memories for single photons and entanglement

ContributorsUsmani, Imam
Defense date2013-03-27

The ability of storing and retrieving quantum states of light is an important experimental challenge in quantum information science. A powerful quantum memory for light is required in a quantum repeater, which would allow long distance (>500km) quantum communications. To be implemented in such application, the quantum memory must allow on-demand readout, with high fidelity and efficiency, and a long storage time. Additionally a multimode capacity (for temporal or spatial modes) would allow multiplexing. Our approaches focus on rare-earth doped crystals, i.e. solid state quantum memory. I present, in this work, our contributions for a solid-state quantum storage, with good performances in every criteria. In particular, I present the preservation of quantum entanglement during the storage, which paves the way for the implementation of quantum memories in quantum repeaters.

  • Quantum memories
  • quantum repeaters
  • quantum information
  • rare-earth doped crystals
  • spectroscopy
  • atomic frequency comb
  • quantum communication
  • quantum entanglement
  • quantum optic
  • atomic ensembles
  • light matter coupling
Citation (ISO format)
USMANI, Imam. Rare-earth quantum memories for single photons and entanglement. 2013. doi: 10.13097/archive-ouverte/unige:27602
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Technical informations

Creation04/17/2013 11:42:00 PM
First validation04/17/2013 11:42:00 PM
Update time03/14/2023 8:09:35 PM
Status update03/14/2023 8:09:34 PM
Last indexation09/18/2023 8:29:41 PM
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