Jeongwan Jin

TL;DR: The authors' broadband quantum memory complements the family of robust, integrated lithium niobate devices and simplifies frequency-matching of light with matter interfaces in advanced applications of quantum communication, bringing fully quantum-enabled networks a step closer.

TL;DR: In this paper, the storage and retrieval of entangled telecom-wavelength photons in an erbium-doped optical fiber was described, and the authors showed that the entangled photons can be stored and retrieved.

TL;DR: In this paper, the authors reported the reversible transfer of photon-photon entanglement, generated by means of spontaneous parametric down-conversion, into entagglement between a photon and a collective atomic excitation in a thulium-doped lithium niobate waveguide cooled to 3 K.

TL;DR: It is shown that heralded polarization qubits at a telecom wavelength are stored and retrieved with near-unity fidelity by implementing the atomic frequency comb protocol in an ensemble of erbium atoms doped into an optical fiber.

TL;DR: The conditional detection of time-bin qubits after storage in and retrieval from a photon-echo-based waveguide quantum memory is demonstrated and shows the suitability of the integrated light-matter interface for future applications of quantum information processing.