A millisecond integrated quantum memory for photonic qubits.

ABSTRACT: Quantum memories for light are essential building blocks for quantum repeaters and quantum networks. Integrated operations of quantum memories could enable scalable application with low-power consumption. However, the photonic quantum storage lifetime in integrated devices has so far been limited to tens of microseconds, falling short of the requirements for practical applications. Here, we demonstrate quantum storage of photonic qubits for 1.021 milliseconds based on a laser-written optical waveguide fabricated in a ¹⁵¹Eu³⁺:Y₂SiO₅ crystal. Spin dephasing of ¹⁵¹Eu³⁺ is mitigated through dynamical decoupling applied via on-chip electric waveguides, and we obtain a storage efficiency of 12.0 ± 0.5% at 1.021 milliseconds, which

SUBMITTER: Liu YP 

PROVIDER: S-EPMC11939051 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature