Results 21 to 30 of about 25,058 (296)

Quantum entanglement of photons on free electrons

Results in Physics, 2023
The quantum entanglement of photons is one of the interesting and important manifestations of the quantum world, which is already being used in quantum technologies.
D.N. Makarov
doaj   +1 more source

Entanglement purification on quantum networks

Physical Review Research, 2023
We present an approach to entanglement purification on complex quantum network architectures, that is, how a quantum network built from repeaters with limited processing fidelity can purify and distribute entanglement between users.
Michelle Victora, Spyros Tserkis, Stefan Krastanov, Alexander Sanchez de la Cerda, Steven Willis, Prineha Narang   +5 more
doaj   +1 more source

Detecting quantum entanglement

Theoretical Computer Science, 2002
We review the criteria for separability and quantum entanglement, both in a bipartite as well as a multipartite setting. We discuss Bell inequalities, entanglement witnesses, entropic inequalities, bound entanglement and several features of multipartite entanglement.
openaire   +2 more sources

Quantum Entanglement

New Scientist
This condensed study extends the T-helison formalism (H²) operator framework to address bipartite and multipartite quantum entanglement. In H², an entangled system is uniquely modelled as a single wave-fractal object characterized by an inseparable spiral topology. A key innovation lies in the replacement of GRW/CSL-type stochastic collapse mechanisms
  +8 more sources

Noncommutative metasurfaces enabled diverse quantum path entanglement of structured photons

Opto-Electronic Science
Quantum entanglement, a fundamental concept in quantum mechanics, lies at the heart of many current and future quantum technologies. A pivotal task is the generation and control of diverse quantum entangled states in a more compact and flexible manner ...
Yan Wang, Yichang Shou, Jiawei Liu, Qiang Yang, Shizhen Chen, Weixing Shu, Shuangchun Wen, Hailu Luo   +7 more
doaj   +1 more source

Experimental realization of multipartite entanglement via quantum Fisher information in a uniform antiferromagnetic quantum spin chain

Physical Review Research, 2020
Quantum entanglement is a quantum-mechanical phenomenon where the quantum state of a many-body system with many degrees of freedom cannot be described independently of the state of each body with a given degree of freedom, no matter how far apart in ...
George Mathew, Saulo L. L. Silva, Anil Jain, Arya Mohan, D. T. Adroja, V. G. Sakai, C. V. Tomy, Alok Banerjee, Rajendar Goreti, Aswathi V. N., Ranjit Singh, D. Jaiswal-Nagar   +11 more
doaj   +1 more source

Entanglement and quantum correlation measures for quantum multipartite mixed states

Scientific Reports, 2023
Entanglement, and quantum correlation, are precious resources for quantum technologies implementation based on quantum information science, such as quantum communication, quantum computing, and quantum interferometry. Nevertheless, to our best knowledge,
Arthur Vesperini, Ghofrane Bel-Hadj-Aissa, Roberto Franzosi   +2 more
doaj   +1 more source

Approximate encoding of quantum states using shallow circuits

npj Quantum Information
Quantum algorithms and simulations often require the preparation of complex states through sequences of 2-qubit gates. For a generic quantum state, the number of required gates grows exponentially with the number of qubits, becoming unfeasible on near ...
Matan Ben-Dov, David Shnaiderov, Adi Makmal, Emanuele G. Dalla Torre   +3 more
doaj   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

Advanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

Research on Intraparticle to Interparticle Entanglement Swapping Protocols

Applied Sciences
Entanglement is one of the most striking features of quantum systems, whereby its non-classical correlation is an essential resource in numerous quantum protocols.
Jiangmei Tang, Shaomeng Wang, Bingyang Liang, Yubin Gong   +3 more
doaj   +1 more source