Analog black-white hole solitons in traveling wave parametric amplifiers with superconducting nonlinear asymmetric inductive elements

被引：4

作者：

Katayama, Haruna ^{[1
,2
]}

Hatakenaka, Noriyuki ^{[2
]}

Fujii, Toshiyuki ^{[3
]}

Blencowe, Miles P. ^{[1
]}

机构：

[1] Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA

[2] Hiroshima Univ, Grad Sch Adv Sci & Engn, Higashihiroshima 7398521, Japan

[3] Asahikawa Med Univ, Dept Phys, Asahikawa 0788510, Japan

来源：

PHYSICAL REVIEW RESEARCH | 2023年 / 5卷 / 02期

关键词：

REDUCTIVE PERTURBATION METHOD; DE-VRIES EQUATION; HAWKING RADIATION; DYNAMICS;

D O I：

10.1103/PhysRevResearch.5.L022055

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that existing traveling wave parametric amplifier (TWPA) setups, using superconducting nonlinear asymmetric inductive elements (SNAILs), admit soliton solutions that act as analog event horizons. The SNAIL-TWPA circuit dynamics are described by the Korteweg-de Vries or modified Korteweg-de Vries equations in the continuum field approximation, depending on the external magnetic flux bias, and validated numerically. The soliton spatially modulates the velocity for weak probes, resulting in the effective realization of analog black hole and white hole event horizon pairs. The SNAIL external magnetic flux bias tunability facilitates a three-wave mixing process, which enhances the prospects for observing Hawking photon radiation.

引用

页数：6