Advances in space quantum communications

JS Sidhu, SK Joshi, M Gündoğan… - IET Quantum …, 2021 - Wiley Online Library
Concerted efforts are underway to establish an infrastructure for a global quantum Internet to
realise a spectrum of quantum technologies. This will enable more precise sensors, secure …

[HTML][HTML] Quantum physics in space

A Belenchia, M Carlesso, Ö Bayraktar, D Dequal… - Physics Reports, 2022 - Elsevier
Advances in quantum technologies are giving rise to a revolution in the way fundamental
physics questions are explored at the empirical level. At the same time, they are the seeds …

[HTML][HTML] Quantum blockchain using entanglement in time

D Rajan, M Visser - Quantum Reports, 2019 - mdpi.com
We propose a conceptual design for a quantum blockchain. Our method involves encoding
the blockchain into a temporal GHZ (Greenberger–Horne–Zeilinger) state of photons that do …

[HTML][HTML] Spooky action at a global distance: analysis of space-based entanglement distribution for the quantum internet

S Khatri, AJ Brady, RA Desporte, MP Bart… - npj Quantum …, 2021 - nature.com
Recent experimental breakthroughs in satellite quantum communications have opened up
the possibility of creating a global quantum internet using satellite links. This approach …

Decentralization using quantum blockchain: A theoretical analysis

Z Yang, T Salman, R Jain… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Blockchain technology has been prominent recently due to its applications in
cryptocurrency. Numerous decentralized blockchain applications have been possible due to …

Spacetime effects on satellite-based quantum communications

DE Bruschi, TC Ralph, I Fuentes, T Jennewein… - Physical Review D, 2014 - APS
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 …

Phonon creation by gravitational waves

C Sabín, DE Bruschi, M Ahmadi… - New Journal of …, 2014 - iopscience.iop.org
We show that gravitational waves create phonons in a Bose–Einstein condensate (BEC). A
traveling spacetime distortion produces particle creation resonances that correspond to the …

[HTML][HTML] Relativistic quantum metrology: Exploiting relativity to improve quantum measurement technologies

M Ahmadi, DE Bruschi, C Sabín, G Adesso, I Fuentes - Scientific reports, 2014 - nature.com
We present a framework for relativistic quantum metrology that is useful for both Earth-based
and space-based technologies. Quantum metrology has been so far successfully applied to …

A self-interfering clock as a “which path” witness

Y Margalit, Z Zhou, S Machluf, D Rohrlich, Y Japha… - Science, 2015 - science.org
In Einstein's general theory of relativity, time depends locally on gravity; in standard quantum
theory, time is global—all clocks “tick” uniformly. We demonstrate a new tool for investigating …

[HTML][HTML] Quantum memories for fundamental science in space

JM Mol, L Esguerra, M Meister… - Quantum Science …, 2023 - iopscience.iop.org
Investigating and verifying the connections between the foundations of quantum mechanics
and general relativity will require extremely sensitive quantum experiments. To provide …