A quantum-assisted master clock in the sky: global synchronization from satellites at sub-nanosecond precision

• URL: http://arxiv.org/abs/2311.11155v1
• Date: Sat, 18 Nov 2023 19:53:07 GMT
• Title: A quantum-assisted master clock in the sky: global synchronization from satellites at sub-nanosecond precision
• Authors: Sage Ducoing, Ivan Agullo, James E. Troupe, Stav Haldar
• Abstract summary: We develop a protocol to synchronize clocks on board a network of satellites equipped with quantum resources. We show that, in such a constellation, satellites reinforce each other's sync capabilities, forming a common clock that is more stable and precise than its constituents.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This article develops a protocol to synchronize clocks on board a network of satellites equipped with quantum resources. We show that, in such a constellation, satellites reinforce each other's sync capabilities, forming a common clock that is more stable and precise than its constituents. We envision the resulting network as a master clock able to distribute time across the globe, providing the basis for a future quantum global navigation satellite system or a space-based quantum network. As an example of its capabilities, we show that a constellation of 50 satellites equipped with modest quantum resources, and distributed amongst 5 orbits at an altitude of 500 km, allows the synchronization of clocks spread across the globe at sub-nanosecond precision.

Related papers

• Scalable Scheduling Policies for Quantum Satellite Networks [10.91414940065524]
  We consider the problem of transmission scheduling in quantum satellite networks subject to resource constraints at the satellites and ground stations. We show that the most general problem of assigning satellites to ground station pairs for entanglement distribution is NP-hard. We propose four scalable algorithms and evaluate their performance for Starlink mega constellation.
  arXiv  Detail & Related papers  (2024-05-15T15:58:12Z)
• Two-Way Quantum Time Transfer: A Method for Daytime Space-Earth Links [0.0]
  Two-way quantum time transfer is relevant for daytime space-Earth links and software-emulated satellite motion. This work demonstrates how QTT is potentially relevant for daytime space-Earth quantum networking and/or providing high-precision timing in GPS-denied environments.
  arXiv  Detail & Related papers  (2023-07-14T14:25:29Z)
• Synchronizing clocks via satellites using entangled photons: Effect of relative velocity on precision [0.0]
  We develop tools to study the effect of the relative velocity between the satellite and ground stations on the success of the QCS protocol. We simulate the synchronization outcomes for cities across the continental U.S. using a single satellite in a LEO, low-cost entanglement sources, portable atomic clocks, and avalanche detectors.
  arXiv  Detail & Related papers  (2023-06-13T21:31:21Z)
• Quantum Clock Synchronization for Future NASA Deep Space Quantum Links and Fundamental Science [0.0]
  We propose the implementation of a quantum network of satellite- and ground-based clocks with the ability to implement Quantum Clock Synchronization to picosecond accuracy.
  arXiv  Detail & Related papers  (2022-09-29T22:38:50Z)
• Global Time Distribution via Satellite-Based Sources of Entangled Photons [0.0]
  We propose a satellite-based scheme to perform clock synchronization between ground stations spread across the globe using quantum resources. We consider a small constellation of nanosatellites equipped only with modest resources. We conclude that with such a scheme establishing a global network of ground based clocks synchronized to sub-nanosecond level (up to a few picoseconds) of precision, would be feasible.
  arXiv  Detail & Related papers  (2022-09-29T19:43:03Z)
• First demonstration of a post-quantum key-exchange with a nanosatellite [58.579141089302816]
  We demonstrate a post-quantum key-exchange with the nanosatellite SpooQy-1 in low Earth orbit using Kyber-512. This implementation demonstrates the feasibility of a quantum-safe authenticated key-exchange and encryption system on SWaP constrained nanosatellites.
  arXiv  Detail & Related papers  (2022-06-02T10:45:27Z)
• A CubeSat platform for space based quantum key distribution [62.997667081978825]
  We report on the follow-up mission of SpooQy-1, a 3U CubeSat that successfully demonstrated the generation of polarization-entangled photons in orbit. The next iteration of the mission will showcase satellite-to-ground quantum key distribution based on a compact source of polarization-entangled photon-pairs. We briefly describe the design of the optical ground station that we are currently building in Singapore for receiving the quantum signal.
  arXiv  Detail & Related papers  (2022-04-23T06:28:43Z)
• Learning Emergent Random Access Protocol for LEO Satellite Networks [51.575090080749554]
  We propose a novel grant-free random access solution for LEO SAT networks, dubbed emergent random access channel protocol (eRACH) eRACH is a model-free approach that emerges through interaction with the non-stationary network environment. Compared to RACH, we show from various simulations that our proposed eRACH yields 54.6% higher average network throughput.
  arXiv  Detail & Related papers  (2021-12-03T07:44:45Z)
• Realizing quantum nodes in space for cost-effective, global quantum communication: in-orbit results and next steps [94.08853042978113]
  SpooQy-1 is a satellite developed at the Centre for Quantum Technologies. It has successfully demonstrated the operation of an entangled photon pair source on a resource-constrained CubeSat platform.
  arXiv  Detail & Related papers  (2021-04-22T02:59:23Z)
• Telecom-heralded entanglement between remote multimode solid-state quantum memories [55.41644538483948]
  Future quantum networks will enable the distribution of entanglement between distant locations and allow applications in quantum communication, quantum sensing and distributed quantum computation. Here we report the demonstration of heralded entanglement between two spatially separated quantum nodes, where the entanglement is stored in multimode solid-state quantum memories. We also show that the generated entanglement is robust against loss in the heralding path, and demonstrate temporally multiplexed operation, with 62 temporal modes.
  arXiv  Detail & Related papers  (2021-01-13T14:31:54Z)
• Entanglement demonstration on board a nano-satellite [76.84500123816078]
  Quantum networks for secure communication can be realised using large fleets of satellites distributing entangled photon-pairs between ground-based nodes. This paper describes a miniaturised, polarization entangled, photon-pair source operating on board a nano-satellite.
  arXiv  Detail & Related papers  (2020-06-25T14:11:56Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.