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Entanglement generation in trapped-ion systems has relied thus far on two distinct but related geometric phase gate techniques: Molmer-Sorensen and light-shift gates. We recently proposed a variant of the light-shift scheme where the qubit…

In this paper we show a new way to generate entanglement via two identical three-level atoms splitting in the magnetic field interacting with the cavity field. By the system we investigate, We can acquire the EPR state, multi-dimensional…

Quantum Physics · Physics 2007-05-23 Jian-da Wu , Jian-lan Chen , Yong-de Zhang

Entanglement generation lies at the heart of many quantum networking protocols as it enables distributed and modular quantum computing. For superconducting qubits, entanglement fidelity is typically limited by photon loss in the links that…

We study the remote entanglement generation between macroscopic microwave magnon modes in a coupled cavity system. The cavities are connected via an optical fiber, which necessitates the use of a frequency conversion inside the cavity. The…

Quantum Physics · Physics 2024-01-18 Da-Wei Luo , Xiao-Feng Qian , Ting Yu

It is known that maximally entangled Bell state and three-qubit W-type states are very useful in various quantum information processing task. Thus the problem of preparation of these type of states is very important in quantum information…

Quantum Physics · Physics 2015-04-30 Satyabrata Adhikari

A pair of two level atoms A1A2, prepared either in a separable state or in an entangled state, interacts with a single mode of two mode squeezed cavity field while a third atomic qubit B interacts with the second mode of the squeezed field…

Quantum Physics · Physics 2013-05-03 Paulo Jose dos Reis , S. Shelly Sharma , N. K. Sharma

Stimulated by a very recent experiment observing successfully two superconducting states with even- and odd-number of electrons in a nanowire topological superconductor as expected from the existence of two end Majorana quasiparticles (MQs)…

Superconductivity · Physics 2016-08-01 Zhi Wang , Wen-Chao Huang , Qi-Feng Liang , Xiao Hu

We inspect different quantum optical setups from the viewpoint of entanglement generation and detection. As a first step we consider a planar semiconductor microcavity and optimize the Bell-type correlations and their robustness against…

Quantum Physics · Physics 2017-11-22 D. Pagel , H. Fehske

Entanglement is one of the key resources required for quantum computation, so experimentally creating and measuring entangled states is of crucial importance in the various physical implementations of a quantum computer. In superconducting…

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 examine the stochastic dynamics of entanglement for an uncoupled two-qubit system, undergoing continuous parity measurement. Starting with a fully mixed state, the entanglement is zero for a finite amount of time, when it is suddenly…

Quantum Physics · Physics 2008-12-12 Nathan S. Williams , Andrew N. Jordan

In this letter we present a scheme for generating maximally entangled states of two cavity modes which enables us to generate complete set of Bell basis states having rather simple initial state preparation. Furthermore, we study the…

Quantum Physics · Physics 2008-05-03 F. Saif , M. Abdel-Aty , M. Javed , R. Ul-Islam , A. -S. F. Obada

Coherent control and the creation of entangled states are discussed in a system of two superconducting flux qubits interacting with each other through their mutual inductance and identically coupling to a reservoir of harmonic oscillators.…

Superconductivity · Physics 2009-11-13 K. Xia , M. Macovei , J. Evers , C. H. Keitel

We propose a scheme to entangle two magnon modes based on parity measurement. In particular, we consider a system that two yttrium-iron-garnet spheres are coupled to a $V$-type superconducting qutrit through the indirect interactions…

Quantum Physics · Physics 2024-04-17 Jia-shun Yan , Jun Jing

Two component (spinor) Bose-Einstein condensates (BECs) are considered as the nodes of an interconnected quantum network. Unlike standard single-system qubits, in a BEC the quantum information is duplicated in a large number of identical…

Quantum Physics · Physics 2015-06-16 Alexey N. Pyrkov , Tim Byrnes

We propose a method for the experimental generation of two different families of bound entangled states of three qubits. Our method is based on the explicit construction of a quantum network that produces a purification of the desired…

Quantum Physics · Physics 2016-09-08 Philipp Hyllus , Carolina Moura Alves , Dagmar Bruss , Chiara Macchiavello

We irradiated an rf-SQUID qubit with large-amplitude and high frequency electromagnetic field. Population transitions between macroscopic distinctive quantum states due to Landau-Zener transitions at energy-level avoided crossings were…

Quantum Physics · Physics 2017-05-10 Yiwen Wang , Shanhua Cong , Xueda Wen , Cheng Pan , Guozhu Sun , Jian Chen , Lin Kang , Weiwei Xu , Yang Yu , Peiheng Wu

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

Going beyond the entanglement of microscopic objects (such as photons, spins, and ions), here we propose an efficient approach to produce and control the quantum entanglement of three macroscopic coupled superconducting qubits. By…

Quantum Physics · Physics 2009-11-11 L. F. Wei , Yu-xi Liu , Franco Nori

Entanglement is the quintessential quantum mechanical phenomenon understood to lie at the heart of future quantum technologies and the subject of fundamental scientific investigations. Mixture, resulting from noise, is often an unwanted…