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Hybrid quantum information processing [PDF]
, 2014 The development of quantum information processing has traditionally followed two separate and not immediately connected lines of study. The main line has focused on the implementation of quantum bit (qubit) based protocols whereas the other line has been
Andersen, Ulrik L. +3 more
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Strategies for achieving high key rates in satellite-based QKD
npj Quantum Information, 2021 Quantum key distribution (QKD) is a pioneering quantum technology on the brink of widespread deployment. Nevertheless, the distribution of secret keys beyond a few 100 km at practical rates remains a major challenge.
Sebastian Ecker +8 more
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Quantum information outside quantum information
, 2023 Quantum theory, as counter-intuitive as a theory can get, has turned out to make predictions of the physical world that match observations so precisely that it has been described as the most accurate physical theory ever devised. Viewing quantum entanglement, superposition and interference not as undesirable necessities but as interesting resources ...
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Stabilizing quantum information [PDF]
Physical Review A, 2000 5 Pages, Latex. Presentation improved, results unchanged.
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Quantum-enhanced radiometry via approximate quantum error correction
Nature Communications, 2022 Exotic quantum states can be advantageous for sensing, but are very fragile, so that some form of quantum error correction is needed. Here, the authors show how approximate QEC helps overcoming decoherence due to noise when measuring the excitation ...
W. Wang +14 more
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Parsing a sequence of qubits [PDF]
, 2013 We develop a theoretical framework for frame synchronization, also known as block synchronization, in the quantum domain which makes it possible to attach classical and quantum metadata to quantum information over a noisy channel even when the ...
Fujiwara, Yuichiro
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Quantum advantages for transportation tasks - projectiles, rockets and quantum backflow
npj Quantum Information, 2023 Consider a scenario where a quantum particle is initially prepared in some bounded region of space and left to propagate freely. After some time, we verify if the particle has reached some distant target region.
David Trillo +2 more
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npj Quantum Information, 2023 Quantum entanglement between an interfering particle and a detector for acquiring the which-path information plays a central role for enforcing Bohr’s complementarity principle.
Xin-Jie Huang +14 more
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Distribution of high-dimensional entanglement via an intra-city free-space link
Nature Communications, 2017 Increasing the dimensionality of entangled states improves robustness and capacity of secure quantum communications, but it requires suitably modified setups.
Fabian Steinlechner +7 more
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, 1994 In usual quantum theory, the information available about a quantum system is defined in terms of the density matrix describing it on a spacelike surface.
C. Caves +36 more
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