Telecom-band–integrated multimode photonic quantum memory

Abstract

Telecom-band–integrated quantum memory is an elementary building block for developing quantum networks compatible with fiber communication infrastructures. Toward such a network with large capacity, an integrated multimode photonic quantum memory at telecom band has yet been demonstrated. Here, we report a fiber-integrated multimode quantum storage of single photon at telecom band on a laser-written chip. The storage device is a fiber-pigtailed Er 3+ :LiNbO 3 waveguide and allows a storage of up to 330 temporal modes of heralded single photon with 4-GHz-wide bandwidth at 1532 nm and a 167-fold increasing of coincidence detection rate with respect to single mode. Our memory system with all-fiber addressing is performed using telecom-band fiber-integrated and on-chip components. The results represent an important step for the future quantum networks using integrated photonics devices.

The Structural and Electronic Engineering of Molybdenum Disulfide Nanosheets as Carbon‐Free Sulfur Hosts for Boosting Energy Density and Cycling Life of Lithium–Sulfur Batteries

“…Moreover, the CV curves almost overlap with each other after the first cycle (Figure S7, Supporting Information), revealing excellent reversibility of the electrochemical properties. [38] The galvanostatic discharge/charge curves of these electrodes at 0.05 C vividly exhibit two discharging plateaus and one charging plateau (Figure 3b). The discharge plateaus of VMS2-S are longer and flatter together with lower voltage gap than other electrodes, further revealing polarization decrement and the enhanced electrochemical redox reaction in VMS2-S, which is consistent with the CV results.…”

Powering the Future: A Critical Review of Research Progress in Enhancing Stability of High‐Efficiency Organic Solar Cells

“…[ 2f,90b,91 ] Since 2022, oligomerization of NF‐SMAs ( Figure ), also called giant molecule acceptor, has been found to combine the advantages of both polymer and SMA, emerging as a popular strategy that can simultaneously improve the performance and stability of OSCs. [ 15,19,22,81,92 ] Liang et al. compared the performance of oligomeric NF‐SMA with different molecular weights in photovoltaic devices.…”

“…successfully prepared devices with a maximum PCE of 18.19% by oligomerizing two Y6‐derivative molecules into a novel “N‐π‐N” oligomer acceptor. [ 15 ] The introduction of the oligomer acceptor enhanced the light absorption of the active layer, optimized the morphology, and formed a better interpenetrating network for the donor and the acceptor, thus improving carrier mobility. Compared with the Y6‐based OSCs, the oligomeric‐acceptor‐based devices not only improved the efficiency, but also enhanced the photo and thermal stability.…”

Giant Molecule Acceptor Enables Highly Efficient Organic Solar Cells Processed Using Non‐halogenated Solvent

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