Relativistic Quantum Teleportation with Superconducting Circuits

Friis, Nicolai; Lee, Antony R.; Truong, Kevin; Sabín, Carlos; Solano, E.; Johansson, Göran; Fuentes, Ivette

doi:10.1103/physrevlett.110.113602

Cited by 121 publications

(128 citation statements)

References 27 publications

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“…There are certainly many more open problems related to specific protocols, e.g. quantum key distribution and communication in general [16], as well as applications and developments to other research areas, such as relativistic quantum information [142,143,49,144,145]. We prefer to leave our curious readers to find their own ones to try and tackle.…”

Section: Discussionmentioning

confidence: 99%

Continuous Variable Quantum Information: Gaussian States and Beyond

Adesso

Ragy

Lee

2014

Open Syst. Inf. Dyn.

660

889

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The study of Gaussian states has arisen to a privileged position in continuous variable quantum information in recent years. This is due to vehemently pursued experimental realisations and a magnificently elegant mathematical framework. In this article, we provide a brief, and hopefully didactic, exposition of Gaussian state quantum information and its contemporary uses, including sometimes omitted crucial details. After introducing the subject material and outlining the essential toolbox of continuous variable systems, we define the basic notions needed to understand Gaussian states and Gaussian operations. In particular, emphasis is placed on the mathematical structure combining notions of algebra and symplectic geometry fundamental to a complete understanding of Gaussian informatics. Furthermore, we discuss the quantification of different forms of correlations (including entanglement and quantum discord) for Gaussian states, paying special attention to recently developed measures. The manuscript is concluded by succinctly expressing the main Gaussian state limitations and outlining a selection of possible future lines for quantum information processing with continuous variable systems.

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Section: Discussionmentioning

confidence: 99%

Continuous Variable Quantum Information: Gaussian States and Beyond

Adesso

Ragy

Lee

2014

Open Syst. Inf. Dyn.

660

889

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“…It is well known that uncharged scalar fields are a good approximation to the longitudinal (or transverse) modes of the electromagnetic field [14,17]. The field Φ obeys the standard massless Klein-Gordon equation…”

Section: B Modeling Quantum Opticsmentioning

confidence: 99%

“…In order to understand how the propagation of light is affected by the background space-time, we start by noting that Alice or Bob will describe the optical mode (14) through the operator…”

Section: B Propagationmentioning

confidence: 99%

“…Most of hitherto research has focused on modeling and employing localized systems for quantum information processing [13][14][15], while only recently some attention has been drawn towards understanding the influence of gravity on quantum protocols. For example, the recent work in [14] shows that when two users employ the modes of quantum fields contained within cavities to perform a teleportation protocol, the motion of one cavity affects the final fidelity of teleportation. In [16] it was shown how curvature could effect a large scale photonic interferometer.…”

Section: Introductionmentioning

confidence: 99%

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Spacetime effects on satellite-based quantum communications

et al. 2014

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We investigate the consequences of space-time being curved on space-based quantum communication protocols. We analyze tasks that require either the exchange of single photons in a certain entanglement distribution protocol or beams of light in a continuous-variable quantum key distribution scheme. We find that gravity affects the propagation of photons, therefore adding additional noise to the channel for the transmission of information. The effects could be measured with current technology.

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“…On the other hand, time dilation [32] is a concern because of relativistic effects of the Earth on the QCS. The influence of relativistic effects on quantum systems [35][36][37][38][39][40][41][42][43] is a focus of study in recent years because such studies provide insights into some key questions in quantum mechanics and relativity, such as nonlocality, causality, and the information paradox of black holes. Relativistic effects are particularly significant for the quantum versions of the Eddington scheme [6][7][8] because one must assume that the transfer is performed "adiabatically slowly" [44] and the spacetime is flat such that relativistic effects are negligible.…”

Section: Introductionmentioning

confidence: 99%

Influence of relativistic effects on satellite-based clock synchronization

Wang

Tian²,

Jing³

et al. 2016

Phys. Rev. D

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Clock synchronization between the ground and satellites is a fundamental issue in future quantum telecommunication, navigation, and global positioning systems. Here, we propose a scheme of near-Earth orbit satellitebased quantum clock synchronization with atmospheric dispersion cancellation by taking into account the spacetime background of the Earth. Two frequency entangled pulses are employed to synchronize two clocks, one at a ground station and the other at a satellite. The time discrepancy of the two clocks is introduced into the pulses by moving mirrors and is extracted by measuring the coincidence rate of the pulses in the interferometer. We find that the pulses are distorted due to effects of gravity when they propagate between the Earth and the satellite, resulting in remarkably affected coincidence rates. We also find that the precision of the clock synchronization is sensitive to the source parameters and the altitude of the satellite. The scheme provides a solution for satellite-based quantum clock synchronization with high precision, which can be realized, in principle, with current technology.

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Relativistic Quantum Teleportation with Superconducting Circuits

Cited by 121 publications

References 27 publications

Continuous Variable Quantum Information: Gaussian States and Beyond

Continuous Variable Quantum Information: Gaussian States and Beyond

Spacetime effects on satellite-based quantum communications

Influence of relativistic effects on satellite-based clock synchronization

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