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Vacuum Beam Guide for Large-Scale Quantum Networks

Published 14 Dec 2023 in quant-ph and physics.optics | (2312.09372v3)

Abstract: 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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References (29)
  1. D. Gottesman, T. Jennewein, and S. Croke, Longer-baseline telescopes using quantum repeaters, Physical Review Letters 109, 070503 (2012).
  2. H. J. Kimble, The quantum internet, Nature 453, 1023 (2008).
  3. S. Wehner, D. Elkouss, and R. Hanson, Quantum internet: A vision for the road ahead, Science 362, eaam9288 (2018).
  4. M. Takeoka, S. Guha, and M. M. Wilde, Fundamental rate-loss tradeoff for optical quantum key distribution, Nat Commun 5, 10.1038/ncomms6235 (2014).
  5. G. Goubau, Beam waveguides, Advances in Microwaves 3, 67 (1968).
  6. B. P. Abbott et al., Observation of gravitational waves from a binary black hole merger, Physical Review Letters 116, 061102 (2016).
  7. A. S. Holevo and R. F. Werner, Evaluating capacities of bosonic gaussian channels, Physical Review A 63, 032312 (2001).
  8. K. Noh, V. V. Albert, and L. Jiang, Improved quantum capacity bounds of gaussian loss channels and achievable rates with gottesman-kitaev-preskill codes, IEEE Transactions on Information Theory 65, 2563 (2019).
  9. C.-H. Wang, F. Li, and L. Jiang, Quantum capacities of transducers, Nature Communications 13, 6698 (2022).
  10. J. Liu, C. T. Hann, and L. Jiang, Quantum data center: Theories and applications, arXiv: 2207.14336  (2022a).
  11. J. F. Fitzsimons, Private quantum computation: an introduction to blind quantum computing and related protocols, npj Quantum Information 3, 23 (2017).
  12. J. C. Heurtley and W. Streifer, Optical resonator modes—circular reflectors of spherical curvature, JOSA 55, 1472 (1965).
  13. M. H. Liyuan Zhang and G. Billingsley, Itm09 hr ar absorption, LIGO Internal Document E1300674 (2013).
  14. E. O. Inc, Anti-reflection(ar) coatings, https://www.edmundoptics.com/knowledge-center/application-notes/lasers/anti-reflection-coatings/.
  15. A. Yariv and P. Yeh, Photonics : optical electronics in modern communications, 6th ed., The Oxford series in electrical and computer engineering (Oxford University Press, 2007).
  16. G. Herziger and H. Weber, Equivalent optical resonators, Applied Optics 23, 1450_1 (1984).
  17. C. Eaglesfield, Mode-conversion loss in a sequential confocal lens system, in Proceedings of the Institution of Electrical Engineers, Vol. 111 (IET, 1964) pp. 610–615.
  18. F. K. Schwering, On the theory of randomly misaligned beam waveguides, IEEE Transactions on Microwave Theory and Techniques 15, 206 (1967).
  19. W. H. Steier, The statistical effects of random variations in the components of a beam waveguide, Bell System Technical Journal 45, 451 (1966).
  20. J. Christian, G. Goubau, and J. Mink, 5.6-self-aligning optical beam waveguides+ c6553, IEEE Journal of Quantum Electronics 3, 498 (1967).
  21. A. K. Ekert, Quantum cryptography based on bell’s theorem, Physical review letters 67, 661 (1991).
  22. C. H. Bennett and G. Brassard, Quantum cryptography: Public key distribution and coin tossing, arXiv preprint arXiv:2003.06557  (2020).
  23. W.-Y. Hwang, Quantum key distribution with high loss: toward global secure communication, Physical review letters 91, 057901 (2003).
  24. J. C. Palais, Fiber optic communications, Englewood Cliffs  (1984).
  25. J. Liu, C. T. Hann, and L. Jiang, Quantum data center: Theories and applications, arXiv preprint arXiv:2207.14336  (2022b).
  26. H. A. Macleod, Thin-film optical filters (CRC press, 2017).
  27. I. H. Malitson, Interspecimen comparison of the refractive index of fused silica, Josa 55, 1205 (1965).
  28. M. J. Dodge, Refractive properties of magnesium fluoride, Applied optics 23, 1980 (1984).
  29. D. L. Wood and K. Nassau, Refractive index of cubic zirconia stabilized with yttria, Applied Optics 21, 2978 (1982).
Citations (4)
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Summary

  • The paper demonstrates a novel design that uses precision-aligned lenses in a vacuum tube to reduce absorption losses by three orders of magnitude compared to fiber optics.
  • The paper reports experimental attenuation rates as low as 5×10⁻⁵ dB/km, achieving effective communication lengths over 80,000 km.
  • The paper reveals that the system can support over 10¹³ qubits per second without complex repeaters, promising scalable and robust global quantum networks.

Vacuum Beam Guide for Large Scale Quantum Networks

The paper introduces a novel vacuum beam guide (VBG) methodology aimed at establishing large-scale, low-loss quantum networks. This exploration addresses the limitations of current quantum communication technologies, such as fiber optics and satellite links, by demonstrating the potential for unprecedented attenuation rates and channel capacities.

Key Contributions and Findings

  1. Design and Feasibility: The VBG architecture utilizes an array of precisely aligned lenses within a vacuum tube to guide light, significantly reducing losses due to absorption. This setup compares favorably against traditional fiber optics, as it can outperform fiber attenuation rates by three orders of magnitude.
  2. Ultra-Low Attenuation Rates: The experimental setup suggests attenuation rates as low as 5×10−55 \times 10^{-5} dB/km, which translates into effective attenuation lengths exceeding 80,000 km. This performance significantly surpasses existing fiber technologies, providing a robust alternative for long-range quantum communication.
  3. Quantum Channel Capacity: The VBG supports a high-capacity quantum channel beyond 101310^{13} qubits per second over continental distances. This capacity is achieved without requiring complex quantum repeaters, simplifying the implementation and reducing the need for active error correction mechanisms.
  4. Resilience and Practicality: Unlike satellite-based systems, the VBG maintains operational stability unaffected by weather or environmental factors. It leverages mature technologies, such as vacuum chambers and precision optics, implying feasibility with existing infrastructure.

Implications and Future Directions

The VBG promises transformative advancements in quantum networking by enabling a global-scale quantum infrastructure. Its potential applications span secure communications, improved sensing technologies, and advancements in distributed quantum computing, thus providing a backbone for the implementation of wide-area quantum technologies.

From a theoretical standpoint, the VBG offers a fertile ground for exploring quantum information transmission limits. It could catalyze further research into scalable quantum network protocols, especially in terms of optimizing channel utilization and minimizing operational costs.

Looking forward, practical implementation will necessitate addressing the trade-offs between advancement costs and the ultra-low-loss performance of VBG. Future developments could explore alternative materials and configurations for lenses and vacuum systems to optimize performance further and ensure economic viability.

In conclusion, the paper presents substantial progress towards realizing a practical, scalable framework for global quantum networks, with significant implications both in theory and the practical deployment of future quantum technologies.

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