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Related papers: Dissipation-driven generation of two-qubit entangl…

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We describe a scheme with analytic result that allows to generate steady-state entanglement for two atoms over a dissipative bosonic medium. The resonant coupling between the mediating bosonic mode and cavity modes produces three collective…

Quantum Physics · Physics 2014-11-18 Li-Tuo Shen , Xin-Yu Chen , Zhen-Biao Yang , Huai-Zhi Wu , Shi-Biao Zheng

Up to date, the life time of experimentally demonstrated entangled states has been limited, due to their fragility under decoherence and dissipation. Therefore, they are created under strict isolation conditions. In contrast, new approaches…

Quantum Physics · Physics 2013-05-29 Christine A. Muschik , Eugene S. Polzik , J. Ignacio Cirac

We exploit the qubit-qubit coupling induced by plasmon-polariton modes in a one-dimensional nanowaveguide to obtain various two-qubit entanglement situations. Firstly, we observe three phenomena occurring when preparing the initial state of…

Materials Science · Physics 2011-07-06 A. Gonzalez-Tudela , D. Martin-Cano , E. Moreno , L. Martin-Moreno , F. J. Garcia-Vidal , C. Tejedor

An entangled state generation protocol for a system of two qubits driven with an ac signal and coupled through a resonator is introduced. We explain the mechanism of entanglement generation in terms of an interplay between unitary…

Mesoscale and Nanoscale Physics · Physics 2021-11-18 Sebastián Luciano Gallardo , Daniel Dominguez , María José Sánchez

The generation and preservation of entanglement is a central goal in quantum technology. Traditionally, dissipation in quantum systems is thought to be detrimental to entanglement, however dissipation can also be utilised as a means of…

Quantum Physics · Physics 2024-05-20 Josephine Dias , Christopher W. Wächtler , Kae Nemoto , William J. Munro

We investigate relaxation dynamics in the system of two identical quantum dipole emitters (QDEs) located near a metal nanoparticle (MNP) exhibiting a dipolar localized surface plasmon (LSP) resonance at the frequency of the QDE radiative…

Mesoscale and Nanoscale Physics · Physics 2016-09-16 Khachatur V. Nerkararyan , Sergey I. Bozhevolnyi

We propose a simple scheme for the dissipative generation of entangled states of multiple emitters coupled to a waveguide. Our approach exploits collective interactions arising from the formation of subradiant and superradiant excited…

We propose a scheme for deterministic generation and long-term stabilization of entanglement between two electronic spin qubits confined in spatially separated quantum dots. Our approach relies on an electronic quantum bus, consisting…

Mesoscale and Nanoscale Physics · Physics 2016-09-07 Mónica Benito , Martin J. A. Schuetz , J. Ignacio Cirac , Gloria Platero , Geza Giedke

Distributing entanglement between remote sites is integral to quantum networks. Here, we demonstrate the autonomous stabilization of remote entanglement between a pair of non-interacting superconducting qubits connected by an open waveguide…

Quantum Physics · Physics 2024-02-27 Parth S. Shah , Frank Yang , Chaitali Joshi , Mohammad Mirhosseini

We describe a protocol to entangle two qubits at a distance by using resonance fluorescence. The scheme makes use of the postselection of large and distinguishable fluorescence signals corresponding to entangled and unentangled qubit states…

Quantum Physics · Physics 2015-06-15 Ching-Kit Chan , L. J. Sham

Entanglement is a striking feature of quantum mechanics and an essential ingredient in most applications in quantum information. Typically, coupling of a system to an environment inhibits entanglement, particularly in macroscopic systems.…

An analytical theory to calculate the dissipatively stable concurrence in the system of two coupled flux superconducting qubits in the strong driving field is developed. The conditions for the entanglement state generation and destruction…

Quantum Physics · Physics 2023-11-01 M. V. Bastrakova , V. O. Munyaev

We investigate the entanglement dynamics of two two-level emitters (qubits) mediated by a semiinfinite, one-dimensional (1D) photonic waveguide. The coupling of each qubit to the waveguide is chiral, which depends on the propagation…

Quantum Physics · Physics 2020-03-23 Bin Zhang , Sujian You , Mei Lu

In this paper, the higher energy levels of the transmon qubit are taken into consideration to investigate the continuous variable entanglement generation between the transmon qubit and the single-mode cavity. Based on the framework of…

Quantum Physics · Physics 2024-02-19 Jian-Zhuang Wu , Lian-E Lu , Xin-Yu Zhao , Yong-Hong Ma

Entanglement generation can be robust against noise in approaches that deliberately incorporate dissipation into the system dynamics. The presence of additional dissipation channels may, however, limit fidelity and speed of the process.…

Quantum Physics · Physics 2019-01-28 Karl P. Horn , Florentin Reiter , Yiheng Lin , Dietrich Leibfried , Christiane P. Koch

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

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 study the generation of entanglement induced by a single-photon Gaussian wavepacket in multi-atom bi-directional waveguide QED. In particular, we investigate the effect of increasing the number of atoms on the average pairwise…

Quantum Physics · Physics 2019-08-30 Imran M. Mirza , John C. Schotland

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

We report on a mechanism to optimize the generation of steady-state entanglement in a system of coupled qubits driven by microwave fields. Due to the interplay between Landau-Zener-St\"uckerlberg pumping involving three levels and a…

Quantum Physics · Physics 2021-09-15 Ana Laura Gramajo , Daniel Domínguez , María José Sánchez