Space-borne quantum memories for global quantum communication
- URL: http://arxiv.org/abs/2006.10636v1
- Date: Thu, 18 Jun 2020 16:03:54 GMT
- Title: Space-borne quantum memories for global quantum communication
- Authors: Mustafa G\"undo\u{g}an, Jasminder S. Sidhu, Victoria Henderson, Luca
Mazzarella, Janik Wolters, Daniel K.L. Oi, Markus Krutzik
- Abstract summary: We analyse the use of quantum memory (QM)-equipped satellites for quantum communication.
We demonstrate that satellites equipped with QMs provide three orders of magnitude faster entanglement distribution rates than existing protocols.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Global scale quantum communication links will form the backbone of the
quantum internet. However, exponential loss in optical fibres precludes any
realistic application beyond few hundred kilometres. Quantum repeaters and
space-based systems offer to overcome this limitation. Here, we analyse the use
of quantum memory (QM)-equipped satellites for quantum communication focussing
on global range repeaters and Measurement-Device-Independent (MDI) QKD. We
demonstrate that satellites equipped with QMs provide three orders of magnitude
faster entanglement distribution rates than existing protocols based on
fibre-based repeaters or space systems without QMs. We analyse how entanglement
distribution performance depends on memory characteristics, determine
benchmarks to assess performance of different tasks, and propose various
architectures for light-matter interfaces. Our work provides a practical
roadmap to realise unconditionally secure quantum communications over global
distances with current technologies.
Related papers
- Physical Layer Aspects of Quantum Communications: A Survey [31.406787669796184]
Quantum communication systems support unique applications in the form of distributed quantum computing, distributed quantum sensing, and several cryptographic protocols.
Main enabler in these communication systems is an efficient infrastructure that is capable to transport unknown quantum states with high rate and fidelity.
Despite the fundamental differences between the classic and quantum worlds, there exist universal communication concepts that may proven beneficial in quantum communication systems as well.
arXiv Detail & Related papers (2024-07-12T13:16:47Z) - Quantum integrated sensing and communication via entanglement [4.854937611943075]
We propose a novel quantum integrated sensing and communication protocol, which achieves quantum sensing under the Heisenberg limit.
We have theoretically proven its security against eavesdroppers.
arXiv Detail & Related papers (2024-04-12T09:17:43Z) - Towards Quantum-Native Communication Systems: New Developments, Trends,
and Challenges [63.67245855948243]
The survey examines technologies such as quantum-domain (QD) multi-input multi-output (MIMO), QD non-orthogonal multiple access (NOMA), quantum secure direct communication (QSDC)
The current status of quantum sensing, quantum radar, and quantum timing is briefly reviewed in support of future applications.
arXiv Detail & Related papers (2023-11-09T09:45:52Z) - Scaling Limits of Quantum Repeater Networks [62.75241407271626]
Quantum networks (QNs) are a promising platform for secure communications, enhanced sensing, and efficient distributed quantum computing.
Due to the fragile nature of quantum states, these networks face significant challenges in terms of scalability.
In this paper, the scaling limits of quantum repeater networks (QRNs) are analyzed.
arXiv Detail & Related papers (2023-05-15T14:57:01Z) - Time-delayed single satellite quantum repeater node for global quantum
communications [0.0]
Quantum repeaters (QRs) have been proposed to overcome the inherent direct transmission range limit through optical fibre.
Recent proposals suggest that strings of space-borne QRs with on-board quantum memories (QMs) are able to provide global coverage.
Here, we propose an alternative to such repeater constellations using a single satellite with two QMs that effectively acts as a time-delayed version of a single QR node.
arXiv Detail & Related papers (2023-03-07T19:00:12Z) - Multi-User Entanglement Distribution in Quantum Networks Using Multipath
Routing [55.2480439325792]
We propose three protocols that increase the entanglement rate of multi-user applications by leveraging multipath routing.
The protocols are evaluated on quantum networks with NISQ constraints, including limited quantum memories and probabilistic entanglement generation.
arXiv Detail & Related papers (2023-03-06T18:06:00Z) - Quantum Semantic Communications for Resource-Efficient Quantum Networking [52.3355619190963]
This letter proposes a novel quantum semantic communications (QSC) framework exploiting advancements in quantum machine learning and quantum semantic representations.
The proposed framework achieves approximately 50-75% reduction in quantum communication resources needed, while achieving a higher quantum semantic fidelity.
arXiv Detail & Related papers (2022-05-05T03:49:19Z) - On exploring the potential of quantum auto-encoder for learning quantum systems [60.909817434753315]
We devise three effective QAE-based learning protocols to address three classically computational hard learning problems.
Our work sheds new light on developing advanced quantum learning algorithms to accomplish hard quantum physics and quantum information processing tasks.
arXiv Detail & Related papers (2021-06-29T14:01:40Z) - Advances in Space Quantum Communications [38.51855687062809]
Concerted efforts are underway to establish an infrastructure for a global quantum internet.
Quantum communications are a front-runner with quantum networks already implemented in several metropolitan areas.
Recent proposals have modelled the use of space segments to overcome range limitations of purely terrestrial networks.
arXiv Detail & Related papers (2021-03-23T18:00:01Z) - Entanglement transfer, accumulation and retrieval via quantum-walk-based
qubit-qudit dynamics [50.591267188664666]
Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies.
We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism.
In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
arXiv Detail & Related papers (2020-10-14T14:33:34Z) - Entanglement distribution with wavevector-multiplexed quantum memory [0.0]
We show the WV-MUX-QM platform to provide quasi-deterministic entanglement generation over extended distances.
We establish the entangled-bit (ebit) rate per number of employed nodes as a practical figure of merit.
arXiv Detail & Related papers (2020-07-01T15:03:58Z)
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.