First on-chip quantum memory in erbium-doped thin-film lithium niobate stores telecom time-bin qubits for 400 ns with 1.95% efficiency and 96.8% fidelity, exceeding the classical limit.
F.et al.Persistent atomic frequency comb based on zeeman sub-levels of an erbium-doped crystal waveguide.J
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Storage of telecom-band time-bin qubits in thin-film lithium niobate
First on-chip quantum memory in erbium-doped thin-film lithium niobate stores telecom time-bin qubits for 400 ns with 1.95% efficiency and 96.8% fidelity, exceeding the classical limit.