Kavli Affiliate: Rana X. Adhikari
| First 5 Authors: Yuexun Huang, Francisco Salces–Carcoba, Rana X Adhikari, Amir H. Safavi-Naeini, Liang Jiang
| Summary:
The vacuum beam guide (VBG) presents a completely different solution for
quantum channels to overcome the limitations of existing fiber and satellite
technologies for long-distance quantum communication. With an array of aligned
lenses spaced kilometers apart, the VBG offers ultra-high transparency over a
wide range of optical wavelengths. With realistic parameters, the VBG can
outperform the best fiber by three orders of magnitude in terms of attenuation
rate. Consequently, the VBG can enable long-range quantum communication over
thousands of kilometers with quantum channel capacity beyond $10^{13}$
qubit/sec, orders of magnitude higher than the state-of-the-art quantum
satellite communication rate. Remarkably, without relying on quantum repeaters,
the VBG can provide a ground-based, low-loss, high-bandwidth quantum channel
that enables novel distributed quantum information applications for computing,
communication, and sensing.
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