Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Quantum 2.0 Conference and Exhibition

Development of a 7x7 Grid of Absorptive Quantum Memories

Siddharth Sehgal, Eden V. Figueroa, Julián Martínez-Rincón

Published Jan 1, 2024• 0 citations
Publisher

Abstract

The ability to effectively store multiple entangled modes is essential to build high repetition-rate long-distance quantum repeaters. We present a multiplexed room-temperature quantum memory system, where we can store up to 49 independent quantum modes.
DOI
10.1364/quantum.2024.qw4b.5

Related papers

Entanglement between a telecom photon and a room-temperature atomic-vapor quantum memory

Yang Wang, Alexander N. Craddock, Felipe Giraldo +3 more

We report experimental results of entangling a telecom photon and a long-lived atomic quantum memory, a key step in building a quantum repeater for long-distance quantum communications.

•Jan 1, 2024•0 citations

Room-temperature quantum memory for quantum repeaters

Yang Wang, Mehdi Namazi

We report a key milestone in quantum repeater: entanglement between a tele-com photon and a quantum memory. In addition, we report high memory efficiency (50%) that significantly improves the rate.

Quantum 2.0 Conference and Exhibition•Jan 1, 2025•0 citations

Long-Distance Quantum Communication with Multiple Quantum Memories

Mohsen Razavi, Hamidreza Farmanbar, Norbert Lütkenhaus

The rate of entanglement generation between two distant nodes of a quantum repeater system is analytically evaluated. We consider multiple memories at each node and analyze the effect of residual entanglement on system throughput.

Optical Fiber Communication Conference•Feb 1, 2008•0 citations

Bell State Measurement Between Photonic Qubits Stored in Two Independent Room Temperature Quantum Memories

Chase Wallace, Sonali Gera, Eden V. Figueroa

We demonstrate the feasibility of entanglement swapping after storage by performing Bell-state measurements on polarization qubits stored in two independent room-temperature quantum memories, a crucial step in developing a quantum repeater.

Quantum 2.0 Conference and Exhibition•Jan 1, 2023•0 citations

Certification and quantification of the entanglement stored in a quantum memory using incomplete data

Alexey Tiranov, Marcus Huber, Jonathan Lavoie +7 more

Entanglement is a main resource for various applications in quantum information processing and quantum communication. Increasing complexity of entanglement structure paves the way for both deeper fundamental tests of nature and utterly new methods for quantum information tasks. Quantum memory which is capable to store complex entanglement is essential tool for this direction since it allows to use increased quantum information capacity. Particularly, it is necessary to realize quantum repeater scheme to perform long-distance quantum communication [1]. In this context, quantum memories with high temporal multimode capacity offer a tool to realize efficient multiplexing and open a way for various applications in quantum communication studies.

Quantum Information and Measurement (QIM)•Jan 1, 2017•0 citations

Frequency-Multiplexed Storage and Distribution of Narrowband Telecom Photon Pairs over a 10-km Fiber Link with Long-Term System Stability

Ko Ito, Takeshi Kondo, Kyoko Mannami +7 more

The ability to transmit quantum states over long distances is a fundamental requirement of the quantum internet and is reliant upon quantum repeaters. Quantum repeaters involve entangled photon sources that emit and deliver photonic entangled states at high rates and quantum memories that can temporarily store quantum states. Improvement of the entanglement distribution rate is essential for quantum repeaters, and multiplexing is expected to be a breakthrough. However, limited studies exist on multiplexed photon sources and their coupling with a multiplexed quantum memory. Here, we demonstrate the storing of a frequency-multiplexed two-photon source at telecommunication wavelengths in a quantum memory accepting visible wavelengths via wavelength conversion after 10-km distribution. To achieve this, quantum systems are connected via wavelength conversion with a frequency-stabilization system and a noise-reduction system. The developed system is stably operated for more than 42 h. Therefore, it can be applied to quantum repeater systems comprising various physical systems requiring long-term system stability.

arXiv:2303.01677•Physical Review Applied•Feb 27, 2023•10 citations
Entanglement is a main resource for various applications in quantum information processing and quantum communication. Increasing complexity of entanglement structure paves the way for both deeper fundamental tests of nature and utterly new methods for quantum information tasks. Quantum memory which is capable to store complex entanglement is essential tool for this direction since it allows to use increased quantum information capacity. Particularly, it is necessary to realize quantum repeater scheme to perform long-distance quantum communication [1]. In this context, quantum memories with high temporal multimode capacity offer a tool to realize efficient multiplexing and open a way for various applications in quantum communication studies.
The ability to transmit quantum states over long distances is a fundamental requirement of the quantum internet and is reliant upon quantum repeaters. Quantum repeaters involve entangled photon sources that emit and deliver photonic entangled states at high rates and quantum memories that can temporarily store quantum states. Improvement of the entanglement distribution rate is essential for quantum repeaters, and multiplexing is expected to be a breakthrough. However, limited studies exist on multiplexed photon sources and their coupling with a multiplexed quantum memory. Here, we demonstrate the storing of a frequency-multiplexed two-photon source at telecommunication wavelengths in a quantum memory accepting visible wavelengths via wavelength conversion after 10-km distribution. To achieve this, quantum systems are connected via wavelength conversion with a frequency-stabilization system and a noise-reduction system. The developed system is stably operated for more than 42 h. Therefore, it can be applied to quantum repeater systems comprising various physical systems requiring long-term system stability.