Multiplexed quantum repeaters with hot multimode alkali-noble gas
memories
- URL: http://arxiv.org/abs/2402.17752v1
- Date: Tue, 27 Feb 2024 18:39:15 GMT
- Title: Multiplexed quantum repeaters with hot multimode alkali-noble gas
memories
- Authors: Alexandre Barbosa, Hugo Ter\c{c}as, Emmanuel Zambrini Cruzeiro
- Abstract summary: We propose a non-cryogenic optical quantum memory for noble-gas nuclear spins based on the Atomic Frequency Comb protocol.
We propose a ground-based quantum repeater that enables entanglement distribution over distances up to $2300 mathrmkm$ with only $8$ elementary links.
- Score: 49.702453308263266
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We propose a non-cryogenic optical quantum memory for noble-gas nuclear spins
based on the Atomic Frequency Comb (AFC) protocol. Owing to the hours-long
coherence lifetimes of the noble-gas spins and the large bandwidth provided by
the AFC independently of the optical depth, we estimate a time-bandwidth
product of up to $9.7 \times 10^{15}$ for a realistic experimental
configuration. Leveraging on this long-lived multimode memory, we propose a
ground-based quantum repeater that enables entanglement distribution over
distances up to $2300 \ \mathrm{km}$ with only $8$ elementary links. Finally,
we discuss how these quantum memories can enhance rates in space-based quantum
communication.
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