Enhancement of sudden death of entanglement for driven qubits

Details Enhancement of sudden death of entanglement for driven qubits Enhancement of sudden death of entanglement for driven qubits

2008-06-19

arxiv.org/abs/0806.3186v1

J. Low Temp. Phys. 153, 294 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 2 figures

Scientific paper

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.

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