A nested multipass cell delays photons up to 687 ns with 95.4% efficiency and 99.6% entangled-state fidelity, yielding a time-bandwidth product of 3.87x10^7.
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Highly Efficient and Broadband Optical Delay Line towards a Quantum Memory
A nested multipass cell delays photons up to 687 ns with 95.4% efficiency and 99.6% entangled-state fidelity, yielding a time-bandwidth product of 3.87x10^7.