Enhanced Uplink Quantum Communication with Satellites via Downlink Channels

• URL: http://arxiv.org/abs/2102.01853v1
• Date: Wed, 3 Feb 2021 03:16:26 GMT
• Title: Enhanced Uplink Quantum Communication with Satellites via Downlink Channels
• Authors: Eduardo Villase\~nor, Mingjian He, Ziqing Wang, Robert Malaney and Moe Z. Win
• Abstract summary: We show how continuous variable entanglement in the form of two-mode squeezed vacuum (TMSV) states can be used to enhance ground-to-satellite quantum-state transfer. TMSV states can be readily produced in situ on a satellite platform and form a reliable teleportation channel for most quantum states. Our work suggests future satellites forming part of the emerging Quantum Internet should be designed with uplink-communication via TMSV teleportation in mind.
• Score: 14.90819792235638
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In developing the global Quantum Internet, quantum communication with low-Earth-orbit satellites will play a pivotal role. Such communication will need to be two way: effective not only in the satellite-to-ground (downlink) channel but also in the ground-to-satellite channel (uplink). Given that losses on this latter channel are significantly larger relative to the former, techniques that can exploit the superior downlink to enhance quantum communication in the uplink should be explored. In this work we do just that - exploring how continuous variable entanglement in the form of two-mode squeezed vacuum (TMSV) states can be used to significantly enhance the fidelity of ground-to-satellite quantum-state transfer relative to direct uplink-transfer. More specifically, through detailed phase-screen simulations of beam evolution through turbulent atmospheres in both the downlink and uplink channels, we demonstrate how a TMSV teleportation channel created by the satellite can be used to dramatically improve the fidelity of uplink coherent-state transfer relative to direct transfer. We then show how this, in turn, leads to the uplink-transmission of a higher alphabet of coherent states. Additionally, we show how non-Gaussian operations acting on the received component of the TMSV state at the ground station can lead to even further enhancement. Since TMSV states can be readily produced in situ on a satellite platform and form a reliable teleportation channel for most quantum states, our work suggests future satellites forming part of the emerging Quantum Internet should be designed with uplink-communication via TMSV teleportation in mind.

Related papers

• Satellite-Terrestrial Quantum Networks and the Global Quantum Internet [11.876985348588473]
  We propose a three-layer approach, involving GEO and LEO satellites integrated with terrestrial ground stations. We first analyze the channel conditions between the three layers, and then highlight the key role of LEO satellites in the integrated space-terrestrial system. Although our designs are futuristic in that they assume limited quantum memory at the transceivers, we also discuss some near-term uses of our network in which no quantum memory is available.
  arXiv  Detail & Related papers  (2024-10-16T23:45:18Z)
• Exploiting Spatial Diversity in Earth-to-Satellite Quantum-Classical Communications [0.3199881502576702]
  We show that the use of spatial diversity can improve the effectiveness of entanglement distribution. We show that the transfer of both large (classically-encoded) and small (quantum-modulated) coherent states can benefit from the use of diversity over fading channels.
  arXiv  Detail & Related papers  (2024-07-02T12:47:01Z)
• Collaborative Ground-Space Communications via Evolutionary Multi-objective Deep Reinforcement Learning [113.48727062141764]
  We propose a distributed collaborative beamforming (DCB)-based uplink communication paradigm for enabling ground-space direct communications. DCB treats the terminals that are unable to establish efficient direct connections with the low Earth orbit (LEO) satellites as distributed antennas. We propose an evolutionary multi-objective deep reinforcement learning algorithm to obtain the desirable policies.
  arXiv  Detail & Related papers  (2024-04-11T03:13:02Z)
• Satellite-based Quantum Network: Security and Challenges over Atmospheric Channel [32.17201108512485]
  We review the quantum states and channel properties for satellite-based quantum networks and long-range quantum state transfer. We highlight some challenges, such as transmissivity statistics, estimation of channel parameters and attack resilience.
  arXiv  Detail & Related papers  (2023-07-29T17:54:15Z)
• Satellite-based entanglement distribution and quantum teleportation with continuous variables [0.0]
  We study the effects of atmospheric turbulence in continuous-variable entanglement distribution and quantum teleportation in the optical regime between a ground station and a satellite. We include an intermediate station for either state generation, or beam refocusing, in order to reduce the effects of atmospheric turbulence and diffraction. Results show the feasibility of free-space entanglement distribution and quantum teleportation in downlink paths up to the LEO region, but also in uplink paths with the help of the intermediate station.
  arXiv  Detail & Related papers  (2023-03-30T08:39:59Z)
• 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)
• An Evolutionary Pathway for the Quantum Internet Relying on Secure Classical Repeaters [64.48099252278821]
  We conceive quantum networks using secure classical repeaters combined with the quantum secure direct communication principle. In these networks, the ciphertext gleaned from a quantum-resistant algorithm is transmitted using QSDC along the nodes. We have presented the first experimental demonstration of a secure classical repeater based hybrid quantum network.
  arXiv  Detail & Related papers  (2022-02-08T03:24:06Z)
• Deep Learning Aided Routing for Space-Air-Ground Integrated Networks Relying on Real Satellite, Flight, and Shipping Data [79.96177511319713]
  Current maritime communications mainly rely on satellites having meager transmission resources, hence suffering from poorer performance than modern terrestrial wireless networks. With the growth of transcontinental air traffic, the promising concept of aeronautical ad hoc networking relying on commercial passenger airplanes is potentially capable of enhancing satellite-based maritime communications via air-to-ground and multi-hop air-to-air links. We propose space-air-ground integrated networks (SAGINs) for supporting ubiquitous maritime communications, where the low-earth-orbit satellite constellations, passenger airplanes, terrestrial base stations, ships, respectively, serve as the space-, air-,
  arXiv  Detail & Related papers  (2021-10-28T14:12:10Z)
• Temporal Modes of Light in Satellite-to-Earth Quantum Communications [0.8250374560598492]
  The photonic Temporal Mode (TM) is a possible candidate for the delivery of viable multidimensional quantum communications. We show how these modes can provide for improved multiplexing performance and superior quantum key distribution in the satellite-to-Earth channel.
  arXiv  Detail & Related papers  (2021-06-25T15:28:09Z)
• 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)
• Integrating LEO Satellite and UAV Relaying via Reinforcement Learning for Non-Terrestrial Networks [51.05735925326235]
  A mega-constellation of low-earth orbit (LEO) satellites has the potential to enable long-range communication with low latency. We study the problem of forwarding packets between two faraway ground terminals, through an LEO satellite selected from an orbiting constellation. To maximize the end-to-end data rate, the satellite association and HAP location should be optimized. We tackle this problem using deep reinforcement learning (DRL) with a novel action dimension reduction technique.
  arXiv  Detail & Related papers  (2020-05-26T05:39:27Z)

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.