Gravitational dephasing in spontaneous emission of atomic ensembles in timed Dicke states

Stefanov, V.; Siutsou, I. A.; Mogilevtsev, D.

doi:10.1103/physrevd.101.044042

Cited by 4 publications

(1 citation statement)

References 30 publications

(41 reference statements)

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“…Taking into account all the corrections is tantamount to knowing the Riemann tensor in whole of the spacetime geometry, a piece of knowledge which is not attainable. Thus, we tend to argue that once the perturbation breaks, in addition to known wellstudied gravitational decoherence [26][27][28][29], a decoherence occurs. This gravitational decoherence also occurs for geodesics passing very close to the event horizon -see Supplementary Note 7.…”

mentioning

confidence: 99%

Towards Communication in a Curved Spacetime Geometry

Exirifard,

Culf,

Karimi

2020

Preprint

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The current race in quantum communication, endeavouring to establish a global quantum network, must account for special and general relativistic effects. For example, Shapiro time-delay, gravitational lensing, and frame dragging -all due to how a mass distribution alters geodesics -are well-studied. Here, we report how the curvature of spacetime geometry affects the propagation of information carriers along an arbitrary geodesic. An explicit expression for the distortion onto the carrier wavefunction in terms of the Riemann curvature is obtained. Furthermore, we investigate this distortion for anti de Sitter and Schwarzschild geometries. For instance, the spacetime curvature causes a 0.11 radian phaseshift for communication between Earth and the International Space Station on a monochromatic laser beam as well as quadrupole astigmatism, which causes 13.4% crosstalk among the modes, when structured modes traverse through the solar system. Our finding shows that this gravitational distortion is significant, and it needs to be either pre-or post-corrected at the sender or receiver to retrieve the information.

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mentioning

confidence: 99%

Towards Communication in a Curved Spacetime Geometry

Exirifard,

Culf,

Karimi

2020

Preprint

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Conditional Disappearance of Gravitational Dephasing in Multilevel Atomic Systems

Stefanov

2020

J Appl Spectrosc

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Towards communication in a curved spacetime geometry

2021

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The current race in quantum communication – endeavouring to establish a global quantum network – must account for special and general relativistic effects. The well-studied general relativistic effects include Shapiro time-delay, gravitational lensing, and frame dragging which all are due to how a mass distribution alters geodesics. Here, we report how the curvature of spacetime geometry affects the propagation of information carriers along an arbitrary geodesic. An explicit expression for the distortion onto the carrier wavefunction in terms of the Riemann curvature is obtained. Furthermore, we investigate this distortion for anti de Sitter and Schwarzschild geometries. For instance, the spacetime curvature causes a 0.10 radian phase-shift for communication between Earth and the International Space Station on a monochromatic laser beam and quadrupole astigmatism; can cause a 12.2% cross-talk between structured modes traversing through the solar system. Our finding shows that this gravitational distortion is significant, and it needs to be either pre- or post-corrected at the sender or receiver to retrieve the information.

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Gravitational dephasing in spontaneous emission of atomic ensembles in timed Dicke states

Cited by 4 publications

References 30 publications

Towards Communication in a Curved Spacetime Geometry

Towards Communication in a Curved Spacetime Geometry

Conditional Disappearance of Gravitational Dephasing in Multilevel Atomic Systems

Towards communication in a curved spacetime geometry

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