Optimal High-Dimensional Entanglement Concentration for Pure Bipartite Systems [PDF]
Micromachines, 2023 Considering pure quantum states, entanglement concentration is the procedure where, from N copies of a partially entangled state, a single state with higher entanglement can be obtained. Obtaining a maximally entangled state is possible for N=1. However,
Lukas Palma Torres +4 more
doaj +3 more sources
Entanglement concentration for arbitrary four-particle linear cluster states [PDF]
Scientific Reports, 2017 Cluster states, whose model are a remarkably rich structure in measurement-based quantum computation, hold high degree of entanglement, while entanglement is very fragile during the process of transmission because of the inevitable interaction with the ...
Ting-Ting Song +2 more
doaj +3 more sources
Universal entanglement concentration [PDF]
Physical Review A, 2005 We propose a new protocol of \textit{universal} entanglement concentration, which converts many copies of an \textit{unknown} pure state to an \textit{% exact} maximally entangled state.
H. Nagaoka +4 more
core +6 more sources
Quantum Entanglement Concentration Based on Nonlinear Optics for Quantum Communications [PDF]
Entropy, 2013 Entanglement concentration is of most importance in long distance quantum communication and quantum computation. It is to distill maximally entangled states from pure partially entangled states based on the local operation and classical communication. In
Yu-Bo Sheng, Lan Zhou
doaj +4 more sources
Efficient Concentration Protocols for the Single-Photon Entanglement State with Polarization Feature [PDF]
Frontiers in Physics, 2017 We propose two efficient entanglement concentration protocols (ECPs) for arbitrary less-entangled single-photon entanglement state, in which the photon qubit has the polarization feature.
Lan Zhou +6 more
doaj +4 more sources
Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration [PDF]
Physical Review Research, 2023 Photonic Greenberger-Horne-Zeilinger (GHZ) states serve as the central resource for a number of important applications in quantum information science, including secret sharing, sensing, and fusion-based quantum computing.
Rafail Frantzeskakis +4 more
doaj +2 more sources
Remote information concentration and multipartite entanglement in multilevel systems [PDF]
, 2011 Remote information concentration (RIC) in $d$-level systems (qudits) is studied. It is shown that the quantum information initially distributed in three spatially separated qudits can be remotely and deterministically concentrated to a single qudit via ...
Tang, Shi-Qing +4 more
core +2 more sources
Efficient W state entanglement concentration using quantum-dot and optical microcavities [PDF]
, 2012 We present an entanglement concentration protocols (ECPs) for less-entangled W state with quantum-dot and microcavity coupled system. The present protocol uses the quantum nondemolition measurement on the spin parity to construct the parity check gate ...
Bennett +63 more
core +2 more sources
General formulas for fixed-length quantum entanglement concentration [PDF]
, 2005 General formulas of entanglement concentration are derived by using an information-spectrum approach for the i.i.d. sequences and the general sequences of partially entangled pure states.
Hayashi, Masahito
core +2 more sources
Atomic and photonic entanglement concentration via photonic Faraday rotation [PDF]
, 2012 We propose two alternative entanglement concentration protocols (ECPs) using the Faraday rotation of photonic polarization. Through the single-photon input-output process in cavity QED, it is shown that the maximally entangled atomic (photonic) state can
Kuang, Le-Man +4 more
core +2 more sources