Sudden death of entanglement and teleportation fidelity loss via the Unruh effect

2009/07/02 by Andre G. S. Landulfo, André G. S. Landulfo, George E. A. Matsas
Computer Science · Physics and Astronomy · #Mechanical and Optical Resonators #Quantum Information and Cryptography #Quantum Mechanics and Applications #gr-qc #quant-ph

paper · pdf · doi:10.1103/physreva.80.032315

published as Phys.Rev.A80:032315,2009 · 9 pages, 5 figures

arxiv created 2009/07/02 · openalex publication_date 2009/09/15 · arxiv updated 2010/04/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We use the Unruh effect to investigate how the teleportation of quantum states is affected when one of the entangled qubits used in the process is under the influence of some external force. In order to reach a comprehensive understanding, a detailed analysis of the acceleration effect on such entangled qubit system is performed. In particular, we calculate the mutual information and concurrence between the two qubits and show that the latter has a ``sudden death'' at a finite acceleration, whose value will depend on the time interval along which the detector is accelerated.

Citations

• Continuous-variable entanglement sharing in noninertial frames
• Entanglement of Formation of an Arbitrary State of Two Qubits
• The Unruh effect and its applications
• What happens when an accelerating observer detects a Rindler particle