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Quantum entanglement [PDF]

open access: yes, 2007
All our former experience with application of quantum theory seems to say: {\it what is predicted by quantum formalism must occur in laboratory}. But the essence of quantum formalism - entanglement, recognized by Einstein, Podolsky, Rosen and Schr ...
Horodecki, Karol   +3 more
core   +4 more sources

Computing quantum discord is NP-complete

open access: yesNew Journal of Physics, 2014
We study the computational complexity of quantum discord (a measure of quantum correlation beyond entanglement), and prove that computing quantum discord is NP-complete.
Yichen Huang
doaj   +2 more sources

Quantum Entanglement: Separability, Measure, Fidelity of Teleportation, and Distillation

open access: yesAdvances in Mathematical Physics, 2010
Quantum entanglement plays crucial roles in quantum information processing. Quantum entangled states have become the key ingredient in the rapidly expanding field of quantum ...
Ming Li, Shao-Ming Fei, Xianqing Li-Jost
doaj   +3 more sources

Exact entanglement cost of quantum states and channels under PPT-preserving operations [PDF]

open access: yesPhysical Review Letters, 2018
This paper establishes single-letter formulas for the exact entanglement cost of generating bipartite quantum states and simulating quantum channels under free quantum operations that completely preserve positivity of the partial transpose (PPT).
Wang, Xin, Wilde, Mark M.
core   +2 more sources

Distributing Multipartite Entanglement over Noisy Quantum Networks [PDF]

open access: yesQuantum, 2023
A quantum internet aims at harnessing networked quantum technologies, namely by distributing bipartite entanglement between distant nodes. However, multipartite entanglement between the nodes may empower the quantum internet for additional or better ...
Luís Bugalho   +3 more
doaj   +3 more sources

Experimental localisation of quantum entanglement through monitored classical mediator [PDF]

open access: yesQuantum, 2021
Quantum entanglement is a form of correlation between quantum particles that cannot be increased via local operations and classical communication.
Soham Pal   +4 more
doaj   +3 more sources

Multi-qubit entanglement and algorithms on a neutral-atom quantum computer

open access: greenNature, 2022
Gate-model quantum computers promise to solve currently intractable computational problems if they can be operated at scale with long coherence times and high-fidelity logic.
Trent Graham   +24 more
openalex   +3 more sources

Does acceleration always degrade quantum entanglement for tetrapartite Unruh-DeWitt detectors?

open access: yesJournal of High Energy Physics
Previous studies have shown that the Unruh effect completely destroys quantum entanglement and coherence of bipartite states, as modeled by entangled Unruh-DeWitt detectors.
Si-Han Li, Si-Han Shang, Shu-Min Wu
doaj   +2 more sources

Observation of quantum entanglement with top quarks at the ATLAS detector [PDF]

open access: yesNature, 2023
Entanglement is a key feature of quantum mechanics1–3, with applications in fields such as metrology, cryptography, quantum information and quantum computation4–8.
G. Aad   +499 more
semanticscholar   +1 more source

Advances in quantum entanglement purification [PDF]

open access: yesScience China Physics Mechanics and Astronomy, 2023
Since its discovery, the quantum entanglement becomes a promising resource in quantum communication and computation. However, the entanglement is fragile due to the presence of noise in quantum channels.
Pei-Shun Yan   +3 more
semanticscholar   +1 more source

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