Quantum entanglement in spin chains with the XY Hamiltonian at the quantum state transfer

I. D. Lazarev; E. I. Kuznetsova

doi:10.1117/12.2521624

15 March 2019 Quantum entanglement in spin chains with the XY Hamiltonian at the quantum state transfer

I. D. Lazarev, E. I. Kuznetsova

Proceedings Volume 11022, International Conference on Micro- and Nano-Electronics 2018; 110222G (2019) https://doi.org/10.1117/12.2521624
Event: The International Conference on Micro- and Nano-Electronics 2018, 2018, Zvenigorod, Russian Federation

Abstract

In the present work the generation of entanglement between the receiver and sender is investigated in the process of the quantum state transfer in the homogeneous one-dimensional chain of spins 1/2 with the XY -Hamiltonian in the approximation of the nearest neighbour interactions. Fidelity is obtained for a quantum state transfer for various numbers of spins and temperatures and values of initial polarisation of the sender’s spin. The transmitted pure state is encoded in the state of first spin (sender) in the initial time moment. The other spins are in the thermodynamic equilibrium state. The reduced density matrix for the receiver and the sender is obtained for an investigation of entanglement in the “sender-receiver” system. The effect of temperature and polarization of the transmitted state on the generation of entanglement in the system is also investigated.

Citation Download Citation

I. D. Lazarev and E. I. Kuznetsova "Quantum entanglement in spin chains with the XY Hamiltonian at the quantum state transfer", Proc. SPIE 11022, International Conference on Micro- and Nano-Electronics 2018, 110222G (15 March 2019); https://doi.org/10.1117/12.2521624

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available