Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Distributed manipulation of two-qubit entanglement with coupled continuous variables

Not Accessible

Your library or personal account may give you access

Abstract

We study the dynamics of two qubits separately sent through two coupled resonators, each initially containing a coherent-state field. We present analytical arguments and numerically approximate solutions for the qubit-field system under different two-qubit initial states, photon-hopping strengths, and detunings. In the far off-resonant regime, the maximal entanglement of two qubits can be generated with the initial qubit state in which one qubit is in the excited state and the other is in the ground state, and the initially maximal two-qubit entanglement can be frozen and fully revived even for large mean photon number. When the qubits are both initially in their excited states or ground states, qubit–qubit entanglement birth and death apparently appear in the regime where the photon-hopping strength is close to qubit-field detuning, and its peaks do not decrease monotonically as the interaction time increases. It is interesting to observe that when there is photon hopping between two fields, the field–field entanglement can be larger than 1 and increases as the initial amplitude of the coherent state grows. Our present setup is fundamental for distributed quantum information processing and applicable to different physical qubit-resonator systems.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Control of two-atom entanglement with two thermal fields in coupled cavities

Li-Tuo Shen, Zhen-Biao Yang, Huai-Zhi Wu, Xin-Yu Chen, and Shi-Biao Zheng
J. Opt. Soc. Am. B 29(9) 2379-2385 (2012)

Steady-state entanglement of two coupled qubits

Elena del Valle
J. Opt. Soc. Am. B 28(2) 228-235 (2011)

Entanglement transfer from entangled nonlinear coherent states to separable qubits

Azam Anbaraki, Davood Afshar, and Mojtaba Jafarpour
J. Opt. Soc. Am. B 34(7) 1366-1373 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved