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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

Heralded storage of photons is crucial for advancing quantum networks. Previous realizations have primarily relied on single atoms strongly coupled to optical cavities. In this work, we present the experimental realization of heralded…

Quantum Physics · Physics 2025-04-08 Zi-Ye An , Bo-Wei Lu , Jun Li , Chao-Wei Yang , Li Li , Xiao-Hui Bao , Jian-Wei Pan

Quantum state transfer between microwave and optical frequencies is essential for connecting superconducting quantum circuits to coherent optical systems and extending microwave quantum networks over long distances. To build such a hybrid…

Heralded entangling quantum gates are an essential element for the implementation of large-scale optical quantum computation. Yet, the experimental demonstration of genuine heralded entangling gates with free-flying output photons in linear…

Quantum entanglement emerges naturally in interacting quantum systems and plays a central role in quantum information processing. Remarkably, it is possible to generate entanglement even in the absence of direct interactions: provided that…

Mesoscale and Nanoscale Physics · Physics 2016-03-23 Aymeric Delteil , Sun Zhe , Wei-bo Gao , Emre Togan , Stefan Faelt , Atac Imamoglu

We propose a heralded quantum repeater protocol based on the general interface between the circularly polarized photon and the quantum dot embedded in a double-sided optical microcavity. Our effective time-bin encoding on photons results in…

Quantum Physics · Physics 2016-02-10 Tao Li , Guo-Jian Yang , Fu-Guo Deng

An experiment is performed where a single rubidium atom trapped within a high-finesse optical cavity emits two independently triggered entangled photons. The entanglement is mediated by the atom and is characterized both by a Bell…

Quantum Physics · Physics 2009-01-26 B. Weber , H. P. Specht , T. Mueller , J. Bochmann , M. Muecke , D. L. Moehring , G. Rempe

Quantum networks require the crucial ability to entangle quantum nodes. A prominent example is the quantum repeater which allows overcoming the distance barrier of direct transmission of single photons, provided remote quantum memories can…

Quantum repeater is one of the important building blocks for long distance quantum communication network. The previous quantum repeaters based on atomic ensembles and linear optical elements can only be performed with a maximal success…

Quantum Physics · Physics 2015-11-03 Tao Li , Fu-Guo Deng

We propose a heralded quantum repeater based on the scattering of photons off single emitters in one-dimensional waveguides. We show the details by implementing nonlocal entanglement generation, entanglement swapping, and entanglement…

Quantum Physics · Physics 2017-12-06 Guo-Zhu Song , Mei Zhang , Qing Ai , Guo-Jian Yang , Ahmed Alsaedi , Aatef Hobiny , Fu-Guo Deng

We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wavepackets. A photon is created inside a cavity via an active medium, such as an atom, and decays into the continuum of radiation modes…

Quantum Physics · Physics 2009-10-31 K. M. Gheri , C. Saavedra , P. Toermae , J. I. Cirac , P. Zoller

An obvious way to entangle two atoms located at remote locations is to produce a pair of entangled photons half-way between the two atoms, to sent one photon to each location and to subsequently map the photonic entanglement into the atoms.…

Quantum Physics · Physics 2015-06-15 Nicolas Sangouard , Jean-Daniel Bancal , Philipp Muller , Joyee Ghosh , Jurgen Eschner

We propose a scheme for entanglement distribution among different single atoms trapped in separated cavities. In our scheme, by reflecting an input coherent optical pulse from a cavity with a single trapped atom, a controlled phase-shift…

Quantum Physics · Physics 2019-02-25 Feng Mei , Ya-Fei Yu , Xun-Li Feng , Zhi-Ming Zhang , C. H. Oh

Quantum logic gates are fundamental building blocks of quantum computers. Their integration into quantum networks requires strong qubit coupling to network channels, as can be realized with neutral atoms and optical photons in cavity…

Quantum Physics · Physics 2018-02-08 Stephan Welte , Bastian Hacker , Severin Daiss , Stephan Ritter , Gerhard Rempe

We report the experimental realization of heralded distribution of single-photon path entanglement at telecommunication wavelengths in a repeater-like architecture. The entanglement is established upon detection of a single photon,…

We propose a time- and wavelength-multiplexed remote atom-atom entanglement generation protocol based on cavity-assisted photon scattering (CAPS). This is designed to achieve a high rate and high fidelity with robustness to operational…

Quantum Physics · Physics 2026-03-26 Seigo Kikura , Kazufumi Tanji , Akihisa Goban , Shinichi Sunami

We propose a scheme to implement a heralded quantum memory for single-photon polarization qubits with a single atom trapped in an optical cavity. In this scheme, an injected photon only exchanges quantum state with the atom, so that the…

Quantum Physics · Physics 2015-05-13 G. W. Lin , X. B. Zou , X. M. Lin , G. C. Guo

We show how the entanglement of two atoms, trapped in distant separate cavities, can be generated with arbitrarily high probability of success. The scheme proposed employs sudden excitation of the atoms proving that the weakly driven…

Quantum Physics · Physics 2009-11-10 Grzegorz Chimczak

The generation and control of quantum states of spatially-separated qubits distributed in different cavities constitute fundamental tasks in cavity quantum electrodynamics. An interesting question in this context is how to prepare…

Quantum Physics · Physics 2015-06-16 Chui-Ping Yang , Qi-Ping Su , Franco Nori

Establishing quantum entanglement between individual nodes is crucial for building large-scale quantum networks, enabling secure quantum communication, distributed quantum computing, enhanced quantum metrology and fundamental tests of…

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