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The space quest mission

Joshi, Siddarth Koduru The space quest mission. In: Seminar CEMS - Fotonika i kvantna optika (11 October 2016 - 11 October 2016) Institut Ruđer Bošković, Zagreb. (Unpublished)

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General relativity and quantum mechanics predict phenomena on very different scales. Several models predict a decoherence like effect due to gravity . A recent advance based on the event formalism predicts a nonlinear quantum effect that can only be observed using entangled systems. We present a detailed mission proposal to measure this gravitational decoherence using an Optical Ground Station (OGS) and the International Space Station (ISS). Using time-energy entangled photon pairs form a Spontaneous Parametric Down Conversion source, shows that the gravitational decoherence effect will result in a loss of correlation in the arrival times of the photons from a pair. Our experimentally feasible scheme utilizes the NightPod and the 400mm telephoto lens already on board the ISS. Using proof of principle experiments on a 144 km free-space optical link as well as calculations, we study the effect of losses, background noise, pointing errors, orbital motion and atmospheric effects. Further, our experimental scheme is ideal for ground to space quantum communication and testing other aspects of fundamental quantum mechanics, like Bell tests, over unprecedented length scales which are inaccessible on the ground. Ultimately leading to a global quantum network and unconditionally secure communication.

Item Type: Unpublished conference/workshop items or lecture materials
Uncontrolled Keywords: general relativity; quantum mechanics; entangled systems; Optical Ground Station; OGS; International Space Station; ISS; Spontaneous Parametric Down Conversion source; experiment; ground to space quantum communication
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Depositing User: Kristina Ciglar
Date Deposited: 13 Oct 2016 13:07

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