Low-temperature decoherence of qubit coupled to background charges
A Grishin, IV Yurkevich, IV Lerner - Physical Review B—Condensed Matter and …, 2005 - APS
A Grishin, IV Yurkevich, IV Lerner
Physical Review B—Condensed Matter and Materials Physics, 2005•APSWe have found an exact expression for the decoherence rate of a Josephson charge qubit
coupled to fluctuating background charges. At low temperatures T the decoherence rate Γ is
linear in T while at high temperatures it saturates in agreement with a known classical
solution which, however, reached at surprisingly high T. In contrast to the classical picture,
impurity states spread in a wide interval of energies (⪢ T) may essentially contribute to Γ.
coupled to fluctuating background charges. At low temperatures T the decoherence rate Γ is
linear in T while at high temperatures it saturates in agreement with a known classical
solution which, however, reached at surprisingly high T. In contrast to the classical picture,
impurity states spread in a wide interval of energies (⪢ T) may essentially contribute to Γ.
We have found an exact expression for the decoherence rate of a Josephson charge qubit coupled to fluctuating background charges. At low temperatures the decoherence rate is linear in while at high temperatures it saturates in agreement with a known classical solution which, however, reached at surprisingly high . In contrast to the classical picture, impurity states spread in a wide interval of energies may essentially contribute to .
American Physical Society以上显示的是最相近的搜索结果。 查看全部搜索结果