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We propose a scheme to generate two-photon, two-atom, or atom-photon entangledstates with a coupled system of two cavities. In our scheme, two cavity photonsare exchanged by the direct inter-cavity coupling, while atoms in the…

Quantum Physics · Physics 2008-08-15 Jaeyoon Cho , Dimitris G. Angelakis , Sougato Bose

The distribution of entanglement via satellite links will drastically extend the reach of quantum networks. Highly efficient entangled photon sources are an essential requirement towards overcoming high channel loss and achieving practical…

Quantum Physics · Physics 2023-05-10 Emma Brambila , Rodrigo Gómez , Riza Fazili , Markus Gräfe , Fabian Steinlechner

Entangled photon pairs -- discrete light quanta that exhibit non-classical correlations -- play a crucial role in quantum information science (for example in demonstrations of quantum non-locality and quantum cryptography). At the…

Quantum Physics · Physics 2009-11-07 Antia Lamas-Linares , John C. Howell , Dik Bouwmeester

We present a scheme to generate the frequency multiplexed entangled (FME) single photons based on the entanglement between two species atomic mixture ensemble. The write and reads fields driven according to a certain timing sequence, the…

Quantum Physics · Physics 2015-05-28 Chun-Hua Yuan , L. Q. Chen , Z. Y. Ou , Weiping Zhang

Photonic-based qubits and integrated photonic circuits have enabled demonstrations of quantum information processing (QIP) that promises to transform the way in which we compute and communicate. To that end, sources of…

We show that electron recombination using positively charged excitons in single quantum dots provides an efficient method to transfer entanglement from electron spins onto photon polarizations. We propose a scheme for the production of…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Veronica Cerletti , Oliver Gywat , Daniel Loss

We propose using spontaneous Raman scattering from an optically driven Bose-Einstein condensate as a source of atom-photon pairs whose internal states are maximally entangled. Generating entanglement between a particle which is easily…

Quantum Physics · Physics 2009-11-06 M. G. Moore , P. Meystre

Advancing quantum information, communication and sensing relies on the generation and control of quantum correlations in complementary degrees of freedom. Here, we demonstrate the preparation of electron-photon pair states using the…

We study the possibility of using guided photons to generate, control, and measure the entanglement of two qubits that is mediated by a one-dimensional waveguide. We show how entanglement can be generated both with single photon and with…

Quantum Physics · Physics 2014-05-01 C. Gonzalez-Ballestero , Esteban Moreno , F. J. Garcia-Vidal

We report the realisation of a fibred polarisation entangled photon-pair source at 1560 nm based on a type-II non linear interaction and working in the picosecond regime. By taking advantage of a set of filters, we deterministically…

Quantum Physics · Physics 2013-11-27 N. Bruno , E. Zambrini Cruzeiro , A. Martin , R. T. Thew

Quantum entanglement is central to both the foundations of quantum mechanics and the development of new technologies in information processing, communication, and sensing. Entanglement has been realised in a variety of physical systems,…

Quantum Physics · Physics 2025-04-18 Jan-Wilke Henke , Hao Jeng , Murat Sivis , Claus Ropers

Entanglement is one of the most fascinating properties of quantum mechanical systems; when two particles are entangled the measurement of the properties of one of the two allows to instantaneously know the properties of the other, whatever…

Quantum Physics · Physics 2017-08-22 Adeline Orieux , Marijn A. M. Versteegh , Klaus D. Jöns , Sara Ducci

This article mainly focuses on one of the important phenomena in the quantum realm called entanglement. It is clear that entanglement created due to the nonlinearity property has been arisen by some different methods. This study in contrast…

Quantum Physics · Physics 2022-01-14 Ahmad Salmanogli

Plasmonic waveguides provide an integrated platform to develop efficient nanoscale ultrafast photonic devices. Theoretical models that describe nonlinear optical phenomena in plasmonic waveguides, usually, only incorporate bulk…

Top-performance sources of photonic entanglement are an indispensable resource for many applications in quantum communication, most notably quantum key distribution. However, up to now, no source has been shown to simultaneously exhibit the…

Quantum Physics · Physics 2022-10-03 Sebastian Philipp Neumann , Mirela Selimovic , Martin Bohmann , Rupert Ursin

Strongly correlated multi-photon states are indispensable resources for advanced quantum technologies, yet their deterministic generation remains challenging due to the inherent weak nonlinearity in most optical systems. Here, we propose a…

Quantum Physics · Physics 2025-11-19 Jia-Qi Li , Anton Frisk Kockum , Xin Wang

Entangled photons are fundamental resources for quantum communication, computing, and networking. Among them, polarization-entangled photon pairs play an important role due to their straightforward state manipulation and direct use in…

The coherent interaction between a laser-driven single trapped atom and an optical high-finesse resonator allows to produce entangled multi-photon light pulses on demand. The mechanism is based on the mechanical effect of light. The degree…

Quantum Physics · Physics 2009-11-11 Giovanna Morigi , Juergen Eschner , Stefano Mancini , David Vitali

Quantum blockade and entanglement play important roles in quantum information and quantum communication as quantum blockade is an effective mechanism to generate single photons (phonons) and entanglement is a crucial resource for quantum…

Quantum Physics · Physics 2019-11-13 Xun-Wei Xu , Hai-Quan Shi , Jie-Qiao Liao , Ai-Xi Chen

Realizing an on-chip reconfigurable source of path-entangled photons is of critical importance for the advancement of quantum information processing and networking. Achieving this goal has proven challenging to date. We present an on-chip…

Optics · Physics 2017-05-23 Raja Ahmad , Ayman F. Abouraddy