Towards a quantum internet

Dür, W.; Lamprecht, Raphael; Heusler, Stefan

doi:10.1088/1361-6404/aa6df7

Cited by 45 publications

(48 citation statements)

References 48 publications

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“…Otherwise, |ψ is entangled with respect to this particular decomposition, but may be unentangled with other decompositions into subsystems 9 .…”

Section: E Entanglementmentioning

confidence: 99%

“…Let us consider for example the Bell states, called also EPR pairs 10 , in honor of an article written by Einstein, Podolsky, and Rosen in 1935 [34]: 9 The entanglement is not an absolute property of a quantum state, but it depends on the particular decomposition of the composite system into subsystems under consideration. States entangled with respect to the singlequbit decomposition may be unentangled with respect to other decompositions into subsystems.…”

Section: E Entanglementmentioning

confidence: 99%

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When Entanglement Meets Classical Communications: Quantum Teleportation for the Quantum Internet

Cacciapuoti

Caleffi

Meter

et al. 2020

IEEE Trans. Commun.

170

173

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Quantum Teleportation is the key communication functionality of the Quantum Internet, allowing the "transmission" of qubits without the physical transfer of the particle storing the qubit. Quantum teleportation is facilitated by the action of quantum entanglement, a somewhat counter-intuitive physical phenomenon with no direct counterpart in the classical word. As a consequence, the very concept of the classical communication system model has to be redesigned to account for the peculiarities of quantum teleportation. This redesign is a crucial prerequisite for constructing any effective quantum communication protocol. The aim of this manuscript is to shed light on this key concept, with the objective of allowing the reader: i) to appreciate the fundamental differences between the transmission of classical information versus the teleportation of quantum information; ii) to understand the communications functionalities underlying quantum teleportation, and to grasp the challenges in the design and practical employment of these functionalities; iii) to acknowledge that quantum information is subject to the deleterious effects of a noise process termed as quantum decoherence. This imperfection has no direct counterpart in the classical world; iv) to recognize how to contribute to the design and employment of the Quantum Internet.

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“…Otherwise, |ψ is entangled with respect to this particular decomposition, but may be unentangled with other decompositions into subsystems 9 .…”

Section: E Entanglementmentioning

confidence: 99%

Section: E Entanglementmentioning

confidence: 99%

When Entanglement Meets Classical Communications: Quantum Teleportation for the Quantum Internet

Cacciapuoti

Caleffi

Meter

et al. 2020

IEEE Trans. Commun.

170

173

View full text Add to dashboard Cite

show abstract

“…This protocol, as well as many others like those from quantum key distribution (QKD), with entangled [28,29] or polarized photons [30,31], and a relatively new family of protocols for quantum data security called quantum secure direct communication (QSDC) [32][33][34][35][36][37][38][39][40][41][42] are of main importance in a critical branch of quantum communications [24][25][26] called quantum cryptography [43,44]. Success of the latter has an obvious impact on a new version of the internet, named quantum internet [45][46][47][48][49][50][51][52][53][54][55][56][57][58]. In fact, a spectral analysis of this new network is of fundamental importance to increase its performance, given that the information exchange that will take place in quantum internet is based on signal traffic and processing, as well as on the use of entangled pairs in the transmitter, receiver, terrestrial quantum repeaters [59][60][61][62][63], and satellite quantum repeaters [64,65].…”

Section: Quantum Secret Sharingmentioning

confidence: 99%

Fourier’s Quantum Information Processing

Mastriani

2021

SN COMPUT. SCI.

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We demonstrate that quantum information processing (QIP) completely rests on quantum Fourier transform (QFT), and 190 years after his death, the work of Jean-Baptiste Joseph Fourier is more present than ever in one of the most important pillars of physics: QIP. Specifically, this study shows the impact of QFT on the main tool of quantum communication: entanglement, with a particular emphasis on its spectral nature, whose study is completed when entanglement is used in teleportation, and quantum secret sharing. Finally, a better understanding of the spectral nature of quantum entanglement will lead to better protocols for quantum communications, in general, and quantum cryptography, in particular.

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“…III with both a simulator and with a QPU, it is evident that this work has opened a new range of possibilities, giving rise to a new series of developments as alternative protocols even more efficient for satellite quantum repeaters [35][36][37] for quantum Internet. [13][14][15][16][17]…”

Section: Future Workmentioning

confidence: 99%

Satellite quantum repeaters for a quantum Internet

Mastriani

Iyengar

2020

Quantum Engineering

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This work presents a satellite alternative to quantum repeaters based on the terrestrial laid of optical fiber, where the latter have the following disadvantages: a propagation speed (v) equal to 2/3 of the speed of light (c), losses and an attenuation in the material that requires the installation of a repeater every 50 km, while satellite repeaters can cover greater distances at a speed v = c, with less attenuation and losses than in the case of optical fiber except for relative environmental aspects to the ground-sky link, that is, clouds that can disrupt the distribution of entangled photons. Two configurations are presented, the first one of a satellite and the second one of two satellites in the event that both points on the ground cannot access the same satellite. Finally, a series of implementations for evaluating the performance and robustness of both configurations are implemented on a 5 qubits IBM Q processor.

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Towards a quantum internet

Cited by 45 publications

References 48 publications

When Entanglement Meets Classical Communications: Quantum Teleportation for the Quantum Internet

When Entanglement Meets Classical Communications: Quantum Teleportation for the Quantum Internet

Fourier’s Quantum Information Processing

Satellite quantum repeaters for a quantum Internet

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