Results 61 to 70 of about 216,981 (383)
Multipartite entanglement of billions of motional atoms heralded by single photon
npj Quantum Information, 2021 Quantum theory does not prevent entanglement from being created and observed in macroscopic physical systems, in reality however, the accessible scale of entanglement is still very limited due to decoherence effects.
Hang Li +8 more
doaj +1 more source
Probing Rényi entanglement entropy via randomized measurements [PDF]
Science, 2018 An entropic look into entanglement Quantum systems are predicted to be better at information processing than their classical counterparts, and quantum entanglement is key to this superior performance.
T. Brydges +8 more
semanticscholar +1 more source
Verifying bound entanglement of dephased Werner states [PDF]
Phys. Rev. A 96, 042321 (2017), 2017 The verification of quantum entanglement under the influence of realistic noise and decoherence is crucial for the development of quantum technologies. Unfortunately, a full entanglement characterization is generally not possible with most entanglement criteria such as entanglement witnesses or the partial transposition criterion.
arxiv +1 more source
Quantum Zeno effect and the many-body entanglement transition [PDF]
Physical review B, 2018 We introduce and explore a one-dimensional ``hybrid'' quantum circuit model consisting of both unitary gates and projective measurements. While the unitary gates are drawn from a random distribution and act uniformly in the circuit, the measurements are ...
Y. Li, Xiao Chen, Matthew Fisher
semanticscholar +1 more source
Lower Bounds of Entanglement Quantifiers Based On Entanglement Witnesses [PDF]
arXiv, 2023 To quantify the entanglement of bipartite systems in terms of some entanglement measure is a challenging problem in general, and it is much worse when the information about the system is less. In this manuscript, based on two classes of entanglement criteria, we present a method to obtain the lower bounds of the entanglement measures, concurrence ...
arxiv
Experimental measurement of nonlinear entanglement witness by hyper-entangling two-qubit states [PDF]
Phys. Rev. A 98, 032307 (2018), 2018 We demonstrate that non-linear entanglement witnesses can be made particularly useful for entanglement detection in hyper-entangled or multilevel states. We test this idea experimentally on the platform of linear optics using a hyper-entangled state of two photons.
arxiv +1 more source
Spin Entanglement Witness for Quantum Gravity. [PDF]
Physical Review Letters, 2017 Understanding gravity in the framework of quantum mechanics is one of the great challenges in modern physics. However, the lack of empirical evidence has lead to a debate on whether gravity is a quantum entity.
S. Bose +9 more
semanticscholar +1 more source
Long-Distance Entanglement Purification for Quantum Communication. [PDF]
Physical Review Letters, 2021 High-quality long-distance entanglement is essential for both quantum communication and scalable quantum networks. Entanglement purification is to distill high-quality entanglement from low-quality entanglement in a noisy environment and it plays a key ...
Xiao-Min Hu +10 more
semanticscholar +1 more source
Science, 2009 The ability to filter quantum states is a key capability in quantum information science and technology, in which one-qubit filters, or polarizers, have found wide application. Filtering on the basis of entanglement requires extension to multi-qubit filters with qubit-qubit interactions.
Holger F. Hofmann +8 more
openaire +5 more sources
, 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 ...
R. Horodecki +3 more
semanticscholar +1 more source