Year: 2025
Type: article
Abstract: The exploitation of multimodality in different degrees of freedom is one of the most promising ways to increase the rate of heralded entanglement between distant quantum nodes. In this paper, we realize a spatially-multiplexed solid-state quantum memory array with ten individually controllable spin-wave memory cells featuring on-demand read-out and temporal multiplexing. By combining spatial and temporal multiplexing, we store weak coherent pulses at the single-photon level in up to 250 spatio-temporal modes, with an average signal-to-noise ratio of 10(2). We perform a thorough characterization of the whole system, including its multiplexing and demultiplexing stage. We verify that the memory array exhibits low cross-talk even at the single-photon level. The measured performance indicates readiness for storing non-classical states and promises a speed-up in entanglement distribution rates.
Source: npj Quantum Information
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,290
Funders: Gordon and Betty Moore Foundation, Fundación Cellex, Centres de Recerca de Catalunya, Fundación Carmen y Severo Ochoa, European Commission, Ministerio de Ciencia e Innovación, Fundación Bancaria Caixa d'Estalvis i Pensions de Barcelona, FUNDACIÓ Privada MIR-PUIG, HORIZON EUROPE Framework Programme, Agència de Gestió d'Ajuts Universitaris i de Recerca, Agencia Estatal de Investigación
Awards: G1175115578, G118516010, G120905174, G1255325603, G171063284, Quantum Internet Alliance - Phase1, G1855990336, G2064799580, G210041235, Nano-structured glass for future display and communication technologies, G2114305129, G2262748287, G2290189609, G2309174360, G2601397997, G2634659326, G2763573136, G279363373, G300979063, G34346518, G3480869486, G3518538256, G3681454997, G3690828678, G4042783231, G415594430, G425668148, G430777504, G434337789, G464105488, G4742037821, Linking Nodes for The Quantum Internet, G4944594896, G5080475149, G5132640529, G5178665745, G5251554269, G5421974903, G5424859868, G5845768719, G6042476671, G7495638234, G7607973779, G7685134749, G7731791180, G773280237, G8151187853, G8180681537, G8546142835, G8681476109, G8684520763, G873502337, G99296377
OpenAlex ID: W4411028632