Results 91 to 100 of about 5,139,381 (338)
Nonlocality activation in a photonic quantum network
Nature CommunicationsBell nonlocality refers to correlations between two distant, entangled particles that challenge classical notions of local causality. Beyond its foundational significance, nonlocality is crucial for device-independent technologies like quantum key ...
Luis Villegas-Aguilar +11 more
doaj +1 more source
Multiparameter optimisation of a magneto-optical trap using deep learning
Nature Communications, 2018 Dynamics in cold atomic ensembles involve complex many-body interactions that are hard to treat analytically. Here, the authors use machine learning to optimise the cooling and trapping of neutral atoms, showing an improvement in the resulting resonant ...
A. D. Tranter +9 more
doaj +1 more source
Design and Analysis of Communication Protocols using Quantum Resources [PDF]
arXiv, 2020 This thesis is focused on the design and analysis of quantum communication protocols. Several schemes for quantum communication have been introduced in the recent past. For example, quantum teleportation, dense coding, quantum key distribution, quantum secure direct communication, etc., have been rigorously studied in the last 2-3 decades. Specifically,
arxiv
Causal Limit on Quantum Communication. [PDF]
Physical Review Letters, 2018 The capacity of a channel is known to be equivalent to the highest rate at which it can generate entanglement. Analogous to entanglement, the notion of a causality measure characterizes the temporal aspect of quantum correlations.
R. Pisarczyk +4 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A novel low‐bandgap random terpolymer is designed for narrow band detection in charge collection narrowing (CCN) based organic photodetectors. With a relative thin active layer (<1 µm), the CCN‐based devices achieved a narrowband response of 68 nm full‐width‐at‐half‐maximum at 916 nm, together with Responsivity values of 0.13 A W−1 and dark current of ...
Matilde Brunetta +14 more
wiley +1 more source
The simplest demonstrations of quantum nonlocality
New Journal of Physics, 2012 We investigate the complexity cost of demonstrating the key types of nonclassical correlations—Bell inequality violation, Einstein, Podolsky, Rosen (EPR)-steering, and entanglement—with independent agents, theoretically and in a photonic experiment.
Dylan J Saunders +5 more
doaj +1 more source
Achieving the ultimate end-to-end rates of lossy quantum communication networks
npj Quantum Information, 2022 The field of quantum communications promises the faithful distribution of quantum information, quantum entanglement, and absolutely secret keys, however, the highest rates of these tasks are fundamentally limited by the transmission distance between ...
Matthew S. Winnel +3 more
doaj +1 more source
Optical Communication Without Photons [PDF]
, 2013 I analyse a recent quantum communication protocol by Salih et al. that allows one to communicate without any particle carrying the information from the sender to the receiver. I show how this can equally be achieved using classical communication.
arxiv +1 more source
Quantum Communication with Quantum Dot Spins
, 2006 Single electron spins in quantum dots are attractive for quantum communication because of their expected long coherence times. We propose a method to create entanglement between two remote spins based on the coincident detection of two photons emitted by
Christoph Simon +6 more
core +1 more source
Orbital Angular Momentum States Enabling Fiber-based High-dimensional Quantum Communication
Physical Review Applied, 2018 Quantum networks are the ultimate target in quantum communication, where many connected users can share information carried by quantum systems. The keystones of such structures are the reliable generation, transmission and manipulation of quantum states.
D. Cozzolino +10 more
semanticscholar +1 more source