High-performance cavity-enhanced quantum memory with warm atomic cell

Ma, Lu‐Fang; Lei, Xing; Yan, Jieli; Li, Ruiyang; Yan, Zhihui; Jia, Xiaojun; Xie, Changde; Peng, Kunchi

doi:10.1038/s41467-022-30077-1

Cited by 30 publications

(11 citation statements)

References 70 publications

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“…The classical electromagnetically induced transparency (EIT) − materials can achieve an opaque to transparent transition to a specific frequency of light by introducing another external light, a phenomenon that can be explained by the leap of electrons excited by light. However, in the microwave band, the energy of the electromagnetic radiation is too small to excite the electron transition in atoms.…”

Section: Resultsmentioning

confidence: 99%

A Microwave Field-Induced Nonlinear Metamaterial with Wafer Integration Level

Liu

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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Field-induced nonlinear materials, with extended abilities of manipulating electromagnetic waves, have been widely employed in electromagnetic protection, absorption, and detection. Until now, it was found that the field-induced nonlinearity mainly shows in the optical and terahertz frequency bands. Applying the microwave band into such technical activities is hampered due to a lack of investigations on the nonlinearity caused by microwave electric fields, especially in the ultrawideband and microwave highfrequency bands. In this paper, a nonlinear metamaterial (NLMM) concept based on the integration of metamaterial structures and a semiconductor on the same wafer is proposed, which shows nonlinear behavior to the electromagnetics' field energy in the microwave band. The designed NLMM is transparent to low-density electromagnetic radiation fields, while it adaptively becomes opaque to highdensity electromagnetic radiation fields. Two types of NLMM are designed to verify the nonlinear characteristics of ultrawide and narrow bands in the microwave band, respectively. The concept of NLMM can be used for the application of the microwave frequency band in electromagnetic protection and detection.

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Section: Resultsmentioning

confidence: 99%

A Microwave Field-Induced Nonlinear Metamaterial with Wafer Integration Level

Liu

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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“…Our demonstration of CV quantum teleportation network can be also easily extended to other wavelengths that are suitable for solid state quantum memory [65] and alkali atoms' transition line. [66,67] Exploiting the distribution scheme of CV entangled sideband modes, a quantum network that implements many tasks of quantum information processing, without the limitation of teleportation protocol, can be realized. As the technology improves, we have enough reason to expect and believe that a fully connected continuous-variable quantum teleportation network with more parties will have a bright future.…”

Section: Discussionmentioning

confidence: 99%

Continuous Variable Quantum Teleportation Network

Shi

Wang

Liang

et al. 2022

Laser & Photonics Reviews

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Quantum network scales the advantages of quantum communication protocols to more than two detached users, which offers great potential to realize the quantum internet. Here, a fully connected continuous‐variable (CV) quantum teleportation network architecture is presented, in which a squeezed state of light distributes each pair of entangled sideband modes to each communication link that bridges any pair of users. The quantum teleportation scheme is similar to standard two‐party ones for each communication link, without sacrificing communication capability and reliability. The demonstration based on CV‐entangled sideband modes opens an innovative possibility to implement many tasks of deterministic quantum information processing.

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“…Second, we consider the storage efficiency η. It has been proposed [82] and demonstrated [83][84][85][86] that an optical cavity outside of an atomic vapor could enhance the light-matter interaction while, at the same time, suppressing the noise generation, which yields high η without sacrificing F. Third, there are methods to further suppress the noise to achieve even higher fidelity, such as the judicious use of "magic detuning" [85].…”

Section: Discussionmentioning

confidence: 99%

Field-deployable Quantum Memory for Quantum Networking

Wang¹,

Craddock²,

Sekelsky³

et al. 2022

Preprint

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High-performance quantum memories are an essential component for regulating temporal events in quantum networks. As a component in quantum-repeaters, they have the potential to support the distribution of entanglement beyond the physical limitations of fiber loss. This will enable key applications such as quantum key distribution, network-enhanced quantum sensing, and distributed quantum computing. Here, we present a quantum memory engineered to meet real-world deployment and scaling challenges. The memory technology utilizes a warm rubidium vapor as the storage medium, and operates at room temperature, without the need for vacuum-and/or cryogenic-support. We demonstrate performance specifications of high-fidelity retrieval (95%), long coherence time (up to 1ms), and low operation error (10 −2 ). The device is housed in an enclosure with a standard 2U rackmount form factor, and can robustly operate on a day scale in a noisy environment. This result marks an important step toward implementing quantum networks in the field.

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High-performance cavity-enhanced quantum memory with warm atomic cell

Cited by 30 publications

References 70 publications

A Microwave Field-Induced Nonlinear Metamaterial with Wafer Integration Level

A Microwave Field-Induced Nonlinear Metamaterial with Wafer Integration Level

Continuous Variable Quantum Teleportation Network

Field-deployable Quantum Memory for Quantum Networking

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