Optical and spin manipulation of non-Kramers rare-earth ions under weak magnetic field for quantum memory applications

Abstract

Rare-earth ion doped crystals have proven to be solid platforms for implementing quantum memories. Their potential use for integrated photonics with large multiplexing capability and unprecedented coherence times is at the core of their attractiveness. The best performances of these ions are however usually obtained when subject to a dc magnetic field, but consequences of such fields on the quantum memory protocols have only received little attention. In this article, we focus on the effect of a dc bias magnetic field on the population manipulation of non-Kramers ions with nuclear quadrupole states, both in the spin and optical domains, by developing a simple theoretical model. We apply this model to explain experimental observations in a ${}^{151}$Eu:Y${}_2$SiO${}_5$ crystal, and highlight specific consequences on the AFC spin-wave protocol. The developed analysis should allow to predict optimal magnetic field configurations for various protocols.

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Cited by in corpus (8)

• Storage of photonic time-bin qubits for up to 20 ms in a rare-earth doped crystal
• Quantum networks using rare-earth ions
• Heralded entanglement of on-demand spin-wave solid-state quantum memories for multiplexed quantum network links
• Efficient and reversible optical-to-spin conversion for solid-state quantum memories
• A readout-integrated time-bin qutrit analyzer for echo-based quantum memories
• Optical pumping simulations and optical Rabi frequency measurements in ${}^{151}{\mathrm{Eu}}^{3+}:{\mathrm{Y}}_2{\mathrm{SiO}}_5$ under magnetic field
• Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme
• Step-by-step design guide of a cryogenic three-axis vector magnet