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In this paper we investigate the generation of entanglement between two persistent current qubits. The qubits are coupled inductively to each other and to a common bias field, which is used to control the qubit behaviour and is represented…

Superconductivity · Physics 2007-05-23 J. F. Ralph , T. D. Clark , T. P. Spiller , W. J. Munro

The controlled interaction between a single, trapped, laser-driven atom and the mode of a high-finesse optical cavity allows for the generation of temporally separated, entangled light pulses. Entanglement between the photon-number…

Quantum Physics · Physics 2009-11-13 David Vitali , Priscilla Canizares , Juergen Eschner , Giovanna Morigi

We examine the dynamics of entanglement entropy of all parts in an open system consisting of a two-level dimer interacting with an environment of oscillators. The dimer-environment interaction is almost energy conserving. We find the…

Quantum Physics · Physics 2018-05-09 M. Merkli , G. P. Berman , R. T. Sayre , X. Wang , A. I. Nesterov

We report observation of quasiparticle pair-production and characterize quantum entanglement created by a modulational instability in an atomic superfluid. By quenching the atomic interaction to attractive and then back to weakly repulsive,…

Quantum Gases · Physics 2021-08-19 Cheng-An Chen , Sergei Khlebnikov , Chen-Lung Hung

We consider generating maximally entangled states (Bell states) between two qubits coupled to a common bosonic mode, based on f-STIRAP. Utilizing the systematic approach developed in New J. Phys. 19 093016 (2017), we quantify the effects of…

Quantum Physics · Physics 2024-03-15 Dongni Chen , Jiahui Li , Stefano Chesi , Ying-Dan Wang

A qubit (a spin-1/2 particle) prepared in the up state is scattered by local spin-flipping potentials produced by the two target qubits (two fixed spins), both prepared in the down state, to generate an entangled state in the latter when…

Quantum Physics · Physics 2009-07-11 Yuichiro Hida , Hiromichi Nakazato , Kazuya Yuasa , Yasser Omar

We report the generation of entanglement between two individual $^{87}$Rb atoms in hyperfine ground states $|F=1,M=1>$ and $|F=2,M=2>$ which are held in two optical tweezers separated by 4 $\mu$m. Our scheme relies on the Rydberg blockade…

Quantum Physics · Physics 2010-06-09 T. Wilk , A. Gaëtan , C. Evellin , J. Wolters , Y. Miroshnychenko , P. Grangier , A. Browaeys

We propose a simple technique to generate entanglement between distant cavities by using entanglement swapping involving atomic momenta. For the proposed scheme, we have two identical atoms, both initially in their ground state, each…

Quantum Physics · Physics 2017-08-11 Sami Ul Haq , Aeysha Khalique

Entanglement is a cornerstone of quantum technology, playing a key role in quantum computing, cryptography, and information processing. Conventional methods for generating entanglement via optical setups rely on beam splitters, nonlinear…

Quantum Physics · Physics 2025-07-15 Ramaseshan R , Prateek P. Kulkarni , Sharanya Madhusudhan , Kaustav Bhowmick

Remote entanglement between widely separated qubits is a fundamental quantum phenomenon and a critical resource for quantum information applications. Generating entanglement between independent qubits separated by arbitrary, potentially…

We analyze the entanglement generated in a finite time between a pair of space-like separated atoms, one of which emits a photon. As we show to order $e^2$, the origin of entanglement can be traced back to the uncertainty about which one of…

Quantum Physics · Physics 2009-02-10 Juan León , Carlos Sabín

We propose a protocol for generating multi-particle entangled states using coherent manipulation of atoms trapped in an optical cavity. We show how entanglement can be adiabatically produced with two control beams and by exploiting…

Quantum Physics · Physics 2023-05-31 Rahul Sawant

We demonstrate how to create maximal entanglement between two qubits that are encoded in two spectrally distinct solid-state quantum emitters embedded in a waveguide interferometer. The optical probe is provided by readily accessible…

Quantum Physics · Physics 2021-11-10 Elena Callus , Pieter Kok

Quantum discord, and a number of related indicators, are currently raising a relentless interest as a novel paradigm of non-classical correlations beyond entanglement. Beside merely fundamental aspects, various works have shown that discord…

Quantum Physics · Physics 2014-02-27 Alessandro Farace , Francesco Ciccarello , Rosario Fazio , Vittorio Giovannetti

We study how the entanglement dynamics between two-level atoms is impacted by random fluctuations of the light cone. In our model the two-atom system is envisaged as an open system coupled with an electromagnetic field in the vacuum state.…

Quantum Physics · Physics 2017-12-20 G. Menezes , N. F. Svaiter , C. A. D. Zarro

We investigate the thermodynamic constraints on the pivotal task of entanglement generation using out-of-equilibrium states through a model-independent framework with minimal assumptions. We establish a necessary and sufficient condition…

Quantum Physics · Physics 2024-09-10 A. de Oliveira Junior , Jeongrak Son , Jakub Czartowski , Nelly H. Y. Ng

Entanglement in a Gaussian two-mode system can be generated by local driving if additional non-local features are introduced to the dynamics. We demonstrate that weak to moderate ohmic friction arising from a dissipative environment can…

Quantum Physics · Physics 2015-10-09 Jürgen T. Stockburger , Rebecca Schmidt , Joachim Ankerhold

The generation and evolution of entanglement in quantum many-body systems is an active area of research that spans multiple fields, from quantum information science to the simulation of quantum many-body systems encountered in condensed…

The dynamical evolution of a quantum system composed of two coupled cavities, each containing a two-level atom and a single-mode thermal field, is investigated under different conditions. The entanglement between the two atoms is controlled…

Quantum Physics · Physics 2014-01-28 Li-Tuo Shen , Zhen-Biao Yang , Huai-Zhi Wu , Xin-Yu Chen , Shi-Biao Zheng

We investigate fermionic atoms subjected to an optical lattice and coupled to a high finesse optical cavity with photon losses. A transverse pump beam introduces a coupling between the atoms and the cavity field. We explore the steady state…

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