Entanglement sudden death and revival in quantum dark-soliton qubits

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Shaukat, MI (Author) Other; Eduardo V Castro (Author) FCUP; Tercas, H (Author) Other

Journal

Title: Physical Review A

Vol. 98

ISSN: 2469-9926

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 21 Citations

Other information

Authenticus ID: P-00P-G9R

DOI: 10.1103/physreva.98.022319

Abstract (EN): We study the finite time entanglement dynamics between two dark-soliton qubits due to quantum fluctuations in quasi-one-dimensional Bose-Einstein condensates. Recently, dark solitons are proved to be an appealing platform for qubits due to their appreciably long lifetime. We explore the entanglement decay for an entangled state of two phonon coherences and the qubits to be in the diagonal basis of so-called Dicke states. We observe the collapse and revival of the entanglement, depending critically on the collective damping term but independent of the qubit-qubit interaction for both initial states. The collective behavior of the dark-soliton qubits demonstrate the dependence of entanglement evolution on the interatomic distance.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8