Gauging a quantum heat bath with dissipative Landau-Zener transitions

Martijn Wubs, Keiji Saito, Sigmund Kohler, Peter Hänggi, Yosuke Kayanuma

研究成果: Article査読

94 被引用数 (Scopus)

抄録

We calculate the exact Landau-Zener transition probabilities for a qubit with an arbitrary linear coupling to a bath at zero temperature. The final quantum state exhibits a peculiar entanglement between the qubit and the bath. In the special case of diagonal coupling, the bath does not influence the transition probability, whatever the speed of the Landau-Zener sweep. It is proposed to use Landau-Zener transitions to determine both the reorganization energy and the integrated spectral density of the bath. Possible applications include circuit QED and molecular nanomagnets.

本文言語English
論文番号200404
ジャーナルPhysical review letters
97
20
DOI
出版ステータスPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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