Results 11 to 20 of about 5,568,471 (301)

Communicating quantum processes [PDF]

open access: yesProceedings of the 32nd ACM SIGPLAN-SIGACT symposium on Principles of programming languages, 2005
We define a language CQP (Communicating Quantum Processes) for modelling systems which combine quantum and classical communication and computation. CQP combines the communication primitives of the pi-calculus with primitives for measurement and transformation of quantum state; in particular, quantum bits (qubits) can be transmitted from process to ...
Gay, S.J., Nagarajan, R.
openaire   +5 more sources

Relativistic Quantum Communication [PDF]

open access: yes, 2013
In this Ph.D. thesis, I investigate the communication abilities of non-inertial observers and the precision to which they can measure parametrized states.
Hosler, Dominic
core   +6 more sources

Quantum channel correction outperforming direct transmission

open access: yesNature Communications, 2022
Quantum channel correction could provide a remedy to unavoidable losses in long-distance quantum communication, but the break-even point has escaped demonstration so far.
Sergei Slussarenko   +7 more
doaj   +1 more source

How Quantum is Quantum Counterfactual Communication? [PDF]

open access: yesFoundations of Physics, 2021
AbstractQuantum Counterfactual Communication is the recently-proposed idea of using quantum physics to send messages between two parties, without any matter/energy transfer associated with the bits sent. While this has excited massive interest, both for potential ‘unhackable’ communication, and insight into the foundations of quantum mechanics, it has ...
Jonte R. Hance   +2 more
openaire   +3 more sources

Multiparameter Estimation with Two-Qubit Probes in Noisy Channels

open access: yesEntropy, 2023
This work compares the performance of single- and two-qubit probes for estimating several phase rotations simultaneously under the action of different noisy channels.
Lorcán O. Conlon   +2 more
doaj   +1 more source

Efficient computation of the Nagaoka–Hayashi bound for multiparameter estimation with separable measurements

open access: yesnpj Quantum Information, 2021
Finding the optimal attainable precisions in quantum multiparameter metrology is a non-trivial problem. One approach to tackling this problem involves the computation of bounds which impose limits on how accurately we can estimate certain physical ...
Lorcán O. Conlon   +3 more
doaj   +1 more source

Quantum collapse, consciousness and superluminal communication [PDF]

open access: yes, 2004
The relation between quantum collapse, consciousness and superluminal communication is analyzed. As we know, quantum collapse, if exists, can result in the appearance of quantum nonlocality, and requires the existence of a pre- ferred Lorentz frame. This
Gao, Shan, Gao Shan
core   +1 more source

Advances in Quantum Communication and Information [PDF]

open access: yes, 2020
Research in quantum communication requires knowledge of the information theory and teleportation of information in any physical form using the quantum field as media of all different processes and aspects on the managing of their information, their boson

core   +1 more source

Enhancing quantum teleportation efficacy with noiseless linear amplification

open access: yesNature Communications, 2023
Quantum teleportation constitutes a fundamental tool for various applications in quantum communication and computation. However, state-of-the-art continuous-variable quantum teleportation is restricted to moderate fidelities and short-distance ...
Jie Zhao   +8 more
doaj   +1 more source

Optical Free-Space Communication on Earth and in Space regarding Quantum Cryptography Aspects [PDF]

open access: yes, 2010
Mobile FSO Communication links have gained signi cant at- tention over the last years due to their increasing maturity. They are used in point to point link scenarios where the high gain in power efficiency and datarate is crucial, compared to state-of ...
Fuchs, Christian   +3 more
core   +1 more source

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