Journal of Low Temperature Physics

, Volume 153, Issue 5, pp 294–303

Enhancement of Sudden Death of Entanglement for Driven Qubits


DOI: 10.1007/s10909-008-9843-1

Cite this article as:
Li, J., Chalapat, K. & Paraoanu, G.S. J Low Temp Phys (2008) 153: 294. doi:10.1007/s10909-008-9843-1


We study the recently discovered phenomena of sudden death of entanglement for a system of two qubits, each of them independently longitudinally damped by a reservoir and subjected to a continuous driving. We show that driving produces, in the interaction picture, an effective bath that has elements amounting to various extra sources of noise (transverse, thermal squeezed, thermal longitudinal). As a result, the time of sudden death decreases due to driving, which we verify as well by direct numerical calculation. We suggest that this phenomenon can be studied systematically using superconducting qubits driven by microwave fields.


EntanglementDecoherenceSudden death



Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Low Temperature LaboratoryHelsinki University of TechnologyHelsinkiFinland