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This research proposes a novel solid-state quantum memory architecture utilizing dark-state polaritons to extend storage times by mitigating pulse broadening in Praseodymium-doped crystals. By leveraging electromagnetically induced transparency, the study offers a theoretical pathway for more efficient quantum information retention, which is critical for scaling up quantum networks and processors.
Travelling Dark State Polariton as a Viable Quantum Memory in a Solid-State Medium
arXiv:2609.12633v1 Announce Type: new Abstract: We theorize a quantum memory based on the dark-state polariton field, formed by the superposition of atomic and photonic states of a travelling probe laser pulse under the application of standing wave modes of a dominant control laser pulse using a lambda-level scheme Electromagnetically Induced Transparency in a solid medium. We show how an enhancement in the storage time for the pulse is achieved by eliminating pulse broadening due to diffusion. At last, we propose an experiment that can help realize the storage of a probe pulse in the hyperfine levels $^3\text{H}_4 \leftrightarrow ^1\text{D}_2$ of $\text{Pr}^{3+}:\text{Y}_2\text{SiO}_5$, cryogenically cooled at $4.5\text{ K}$. We also discuss multiple applications the storage of the quantum states the probe pulse with a prolonged time interval must have.
Abstract:We theorize a quantum memory based on the dark-state polariton field, formed by the superposition of atomic and photonic states of a travelling probe laser pulse under the application of standing wave modes of a dominant control laser pulse using a lambda-level scheme Electromagnetically Induced Transparency in a solid medium. We show how an enhancement in the storage time for the pulse is achieved by eliminating pulse broadening due to diffusion. At last, we propose an experiment that can help realize the storage of a probe pulse in the hyperfine levels $^3\text{H}_4 \leftrightarrow ^1\text{D}_2$ of $\text{Pr}^{3+}:\text{Y}_2\text{SiO}_5$, cryogenically cooled at $4.5\text{ K}$. We also discuss multiple applications the storage of the quantum states the probe pulse with a prolonged time interval must have.
BibTeX, Version 0.99d (MiKTeX 25.4), 11 pages with 5 figures, presented at National Conference on Nanotechnology, Material Science, and Advanced Optics 2025, Sister Nivedita University, Kolkata, India
arXiv:2609.12633 [quant-ph]
(or arXiv:2609.12633v1 [quant-ph] for this version)
https://doi.org/10.48550/arXiv.2609.12633 arXiv-issued DOI via DataCite (pending registration)
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