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Interfacing light from solid-state single-photon sources with scalable and robust room-temperature quantum memories has been a long-standing challenge in photonic quantum information technologies due to inherent noise processes and…

Quantum memories promise to enable global quantum repeater networks. For field applications, alkali metal vapors constitute an exceptional storage platform, as neither cryogenics, nor strong magnetic fields are required. We demonstrate a…

Interfaced single-photon sources and quantum memories for photons together form a foundational component of quantum technology. Achieving compatibility between heterogeneous, state-of-the-art devices is a long-standing challenge. We built…

Quantum Physics · Physics 2022-10-04 Gianni Buser , Roberto Mottola , Björn Cotting , Janik Wolters , Philipp Treutlein

Quantum memories, capable of controllably storing and releasing a photon, are a crucial component for quantum computers and quantum communications. So far, quantum memories have operated with bandwidths that limit data rates to MHz. Here we…

Quantum Physics · Physics 2015-05-14 K. F. Reim , J. Nunn , V. O. Lorenz , B. J. Sussman , K. C. Lee , N. K. Langford , D. Jaksch , I. A. Walmsley

A quantum memory, for storing and retrieving flying photonic quantum states, is a key interface for realizing long-distance quantum communication and large-scale quantum computation. While many experimental schemes of high storage-retrieval…

Quantum Physics · Physics 2020-04-15 Y. Wang , J. Li , S. Zhang , K. Su , Y. Zhou , K. Liao , S. Du , H. Yan , S. L. Zhu

The ability to filter unwanted light signals is critical to the operation of quantum memories based on neutral atom ensembles. Here we demonstrate an efficient frequency filter which uses a vapor cell filled with $^{85}$Rb and a buffer gas…

Quantum Physics · Physics 2017-03-09 Dan T. Stack , Patricia J. Lee , Qudsia Quraishi

Quantum memories capable of storing single photons are essential building blocks for quantum information processing, enabling the storage and transfer of quantum information over long distances. Devices operating at room temperature can be…

Quantum Physics · Physics 2013-05-29 K. F. Reim , P. Michelberger , K. C. Lee , J. Nunn , N. K. Langford , I. A. Walmsley

On-demand storage and retrieval of quantum information in coherent light-matter interfaces is a key requirement for future quantum networking and quantum communication applications. Alkali vapor memories offer scalable and robust…

Quantum memories are key components in quantum information networks. Their ability to store and retrieve information on demand makes repeat-until-success strategies scalable. Warm alkali-metal vapours are interesting candidates for the…

Quantum Physics · Physics 2017-06-06 Patrick Steffen Michelberger

We present a demonstration of simultaneous high-efficiency, high-speed, and low-noise operation of a photonic quantum memory. By leveraging controllable collisional dephasing in a neutral barium atomic vapor, we demonstrate a significant…

Efficient quantum memories will be an essential building block of large scale networked quantum systems and provide a link between flying photonic qubits and atomic or quasi-atomic local quantum processors. To provide a path to scalability…

Here we show an ultra-low noise regime of operation in a simple quantum memory in warm Rb atomic vapor. By modelling the quantum dynamics of four-level room temperature atoms, we achieve fidelities >90% for single-photon level polarization…

Quantum Physics · Physics 2017-10-04 Mehdi Namazi , Connor Kupchak , Bertus Jordaan , Reihaneh Shahrokhshahi , Eden Figueroa

The faithful storage of a quantum bit of light is essential for long-distance quantum communication, quantum networking and distributed quantum computing. The required optical quantum memory must, first, be able to receive and recreate the…

An optical quantum memory is a stationary device that is capable of storing and recreating photonic qubits with a higher fidelity than any classical device. Thus far, these two requirements have been fulfilled in systems based on cold atoms…

Scalability presents a central platform challenge for the components of current quantum network implementations that can be addressed by microfabrication techniques. We demonstrate a high-bandwidth optical memory using a warm alkali atom…

Quantum Physics · Physics 2023-12-29 Roberto Mottola , Gianni Buser , Philipp Treutlein

The realization of quantum memory using warm atomic vapor cells is appealing because of their commercial availability and the perceived reduction in experimental complexity. In spite of the ambiguous results reported in the literature, we…

Quantum Physics · Physics 2015-06-03 Mark Bashkansky , Fredrik K. Fatemi , Igor Vurgaftman

A hybrid interface of solid state single-photon sources and atomic quantum memories is a long sought-after goal in photonic quantum technologies. Here we demonstrate deterministic storage and retrieval of photons from a semiconductor…

We report an experimental realization of an atomic vapor quantum memory for the photonic po- larization qubit. The performance of the quantum memory for the polarization qubit, realized with electromagnetically-induced transparency in two…

Quantum Physics · Physics 2015-05-18 Young-Wook Cho , Yoon-Ho Kim

Non-classical photon sources are a crucial resource for distributed quantum networks. Photons generated from matter systems with memory capability are particularly promising, as they can be integrated into a network where each source is…

Quantum Physics · Physics 2021-07-14 Karsten B. Dideriksen , Rebecca Schmieg , Michael Zugenmaier , Eugene S. Polzik

The efficient storage and on-demand retrieval of quantum optical states that are compatible with the telecommunications C-band is a requirement for future terrestrial-based quantum optical networking. Spectrum in the C-band minimises…

Quantum Physics · Physics 2022-11-09 S. E. Thomas , S. Sagona-Stophel , Z. Schofield , I. A. Walmsley , P. M. Ledingham
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