activity
20192026
most citedStorage of photonic time-bin qubits for up to 20 ms in a rare-earth doped crystal

119 citations · 186 across the 4 of their papers we have counts for

collaborators

6 papers

quant-ph2026

Cavity-enhanced optical readout and control of nuclear spin qubits

Alexander Ulanowski, Johannes Früh, Fabian Salamon +2

Their exceptional coherence makes nuclear spins in solids a prime candidate for quantum memories in quantum networks and repeaters. Still, the direct all-optical initialization, co…

quant-ph2023★ 13 cited

Spectral Multiplexing of Rare-earth Emitters in a Co-doped Crystalline Membrane

Alexander Ulanowski, Johannes Früh, Fabian Salamon +2

The spectral addressing of many individual rare-earth dopants in optical resonators offers great potential for realizing distributed quantum information processors. To this end, it…

quant-ph2022★ 1 cited

A readout-integrated time-bin qutrit analyzer for echo-based quantum memories

Adrian Holzäpfel, Antonio Ortu, Mikael Afzelius

We present a method to project time-bin qutrits stored in an echo-based quantum memory using several successive partial readouts of the memory. We demonstrate how this scheme can b…

quant-ph2022★ 53 cited

Multimode capacity of atomic-frequency comb quantum memories

Antonio Ortu, Jelena V. Rakonjac, Adrian Holzäpfel +5

Ensemble-based quantum memories are key to developing multiplexed quantum repeaters, able to overcome the intrinsic rate limitation imposed by finite communication times over long…

quant-ph2021★ 119 cited

Storage of photonic time-bin qubits for up to 20 ms in a rare-earth doped crystal

Antonio Ortu, Adrian Holzäpfel, Jean Etesse +1

Long-duration quantum memories for photonic qubits are essential components for achieving long-distance quantum networks and repeaters. The mapping of optical states onto coherent…

quant-ph2019

Optical storage for 0.53 seconds in a solid-state atomic frequency comb memory using dynamical decoupling

Adrian Holzäpfel, Jean Etesse, Krzysztof T. Kaczmarek +3

Quantum memories with long storage times are key elements in long-distance quantum networks. The atomic frequency comb (AFC) memory in particular has shown great promise to fulfill…