TY - JOUR
T1 - Long-Lived Solid-State Optical Memory for High-Rate Quantum Repeaters
AU - Askarani, Mohsen Falamarzi
AU - Das, Antariksha
AU - Davidson, Jacob H.
AU - Amaral, Gustavo C.
AU - Slater, Joshua A.
AU - Marzban, Sara
AU - Cone, Rufus L.
AU - Oblak, Daniel
AU - Tittel, Wolfgang
AU - More Authors, null
PY - 2021
Y1 - 2021
N2 - We argue that long optical storage times are required to establish entanglement at high rates over large distances using memory-based quantum repeaters. Triggered by this conclusion, we investigate the 795.325 nm3 H6↔H34 transition of Tm:Y3Ga5O12 (Tm:YGG). Most importantly, we find that the optical coherence time can reach 1.1 ms, and, using laser pulses, we demonstrate optical storage based on the atomic frequency comb protocol during up to 100 μs as well as a memory decay time Tm of 13.1 μs. Possibilities of how to narrow the gap between the measured value of Tm and its maximum of 275 μs are discussed. In addition, we demonstrate multiplexed storage, including with feed-forward selection, shifting and filtering of spectral modes, as well as quantum state storage using members of nonclassical photon pairs. Our results show the potential of Tm:YGG for creating multiplexed quantum memories with long optical storage times, and open the path to repeater-based quantum networks with high entanglement distribution rates.
AB - We argue that long optical storage times are required to establish entanglement at high rates over large distances using memory-based quantum repeaters. Triggered by this conclusion, we investigate the 795.325 nm3 H6↔H34 transition of Tm:Y3Ga5O12 (Tm:YGG). Most importantly, we find that the optical coherence time can reach 1.1 ms, and, using laser pulses, we demonstrate optical storage based on the atomic frequency comb protocol during up to 100 μs as well as a memory decay time Tm of 13.1 μs. Possibilities of how to narrow the gap between the measured value of Tm and its maximum of 275 μs are discussed. In addition, we demonstrate multiplexed storage, including with feed-forward selection, shifting and filtering of spectral modes, as well as quantum state storage using members of nonclassical photon pairs. Our results show the potential of Tm:YGG for creating multiplexed quantum memories with long optical storage times, and open the path to repeater-based quantum networks with high entanglement distribution rates.
UR - http://www.scopus.com/inward/record.url?scp=85121262451&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.127.220502
DO - 10.1103/PhysRevLett.127.220502
M3 - Article
AN - SCOPUS:85121262451
SN - 0031-9007
VL - 127
JO - Physical Review Letters
JF - Physical Review Letters
IS - 22
M1 - 220502
ER -