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Conferences > QELS > 2012 > QM4G > QM4G.2

Intense Terahertz Pulse-Induced Nonequilibrium BCS State in Superconducting NbN

Ryusuke Matsunaga and Ryo Shimano

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Abstract

We perform terahertz(THz)-pump-THz-probe spectroscopy to study ultrafast dynamics of BCS superconductor NbN. Resonant photo-injection of high density quasiparticles realized by the intense THz pump pulses results in a nonequilibrium BCS state.

© 2012 Optical Society of America

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