Singularities in nearly uniform one-dimensional condensates due to quantum diffusion
Singularities in nearly uniform one-dimensional condensates due to quantum diffusion
复制标题
由于量子扩散而导致近乎均匀的一维凝聚体中的奇点
DOI:
10.1103/physreva.104.l041303
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
C. L. Baldwin, P. Bienias
中科院分区:
文献类型:
--
作者:
C. L. Baldwin, P. Bienias
Dissipative systems often exhibit wavelength-dependent loss rates. One prominent example is Rydberg polaritons formed by electromagnetically induced transparency, which have long been a leading candidate for studying the physics of interacting photons and also hold promise as a platform for quantum information. In this system, dissipation is in the form of quantum diffusion, i.e., proportional to(being the wavevector) and vanishing at long wavelengths as. Here, we show that one-dimensional condensates subject to this type of loss are unstable to long-wavelength density fluctuations in an unusual manner: after a prolonged period in which the condensate appears to relax to a uniform state, local depleted regions quickly form and spread ballistically throughout the system. We connect this behavior to the leading-order equation for the nearly uniform condensate—a dispersive analog to the Kardar-Parisi-Zhang equation—which develops singularities in finite time. Furthermore, we show that the wavefronts of the depleted regions are described by purely dissipative solitons within a pair of hydrodynamic equations, with no counterpart in lossless condensates. We close by discussing conditions under which such singularities and the resulting solitons can be physically realized.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
C. Escudero
通讯作者:
C. Escudero
DOI:
--
发表时间:
1996
期刊:
影响因子:
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作者:
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DOI:
--
发表时间:
2001
期刊:
影响因子:
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作者:
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R. Natalini
影响因子:
8.6
作者:
Mohapatra, A. K.;Jackson, T. R.;Adams, C. S.
通讯作者:
Adams, C. S.
影响因子:
19.6
作者:
Weimer, Hendrik;Mueller, Markus;Buechler, Hans Peter
通讯作者:
Buechler, Hans Peter