Improved Light-Matter Interaction for Storage of Quantum States of Light
in a Thulium-Doped Crystal Cavity
- URL: http://arxiv.org/abs/2001.11456v1
- Date: Thu, 30 Jan 2020 17:06:17 GMT
- Title: Improved Light-Matter Interaction for Storage of Quantum States of Light
in a Thulium-Doped Crystal Cavity
- Authors: Jacob H. Davidson, Pascal Lefebvre, Jun Zhang, Daniel Oblak, Wolfgang
Tittel
- Abstract summary: We implement an atomic frequency comb quantum memory for 793 nm wavelength photons.
Results show a memory efficiency of (27.5$pm$ 2.7)% over a 500 MHz bandwidth.
This allows us for the first time to store and recall quantum states of light in such a memory.
- Score: 2.8353883265392876
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We design and implement an atomic frequency comb quantum memory for 793 nm
wavelength photons using a monolithic cavity based on a thulium-doped
Y$_3$Al$_5$O$_{12}$ (Tm:YAG) crystal. Approximate impedance matching results in
the absorption of approximately $90\%$ of input photons and a memory efficiency
of (27.5$\pm$ 2.7)% over a 500 MHz bandwidth. The cavity enhancement leads to a
significant improvement over the previous efficiency in Tm-doped crystals using
a quantum memory protocol. In turn, this allows us for the first time to store
and recall quantum states of light in such a memory. Our results demonstrate
progress toward efficient and faithful storage of single photon qubits with
large time-bandwidth product and multi-mode capacity for quantum networking.
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