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UID:news120@bqc.unibas.ch
DTSTAMP;TZID=Europe/Zurich:20260302T155716
DTSTART;TZID=Europe/Zurich:20260310T121500
SUMMARY:Spectral Signatures of Dissipative Quantum Chaos Induced by Structu
 red Internal Degrees of Freedom
DESCRIPTION:We study the emergence of dissipative quantum chaos in a two-le
 vel system that is non-chaotic in isolation but coupled to a set of struct
 ured internal modes. These internal degrees of freedom exhibit chaotic cha
 racteristics\, which are imprinted onto the reduced dynamics of the system
 . From a time-local master equation\, we derive an effective time-dependen
 t non-Hermitian Liouvillian and analyze its complex eigenvalues at each ti
 me step. Spectral statistics [1] reveal that the two-level system can reta
 in clear signatures of quantum chaos present in its internal degree of fre
 edom\, under certain conditions. We further show that internal degree of f
 reedominduced chaos correlates with the loss of coherence in the system\, 
 quantified by the degradation of purity [2\, 3]. By extending the model to
  two qubits\, we examine how chaotic internal modes degrade Hong-Ou-Mandel
  interference and thus generate particle distinguishability [4]. Our resul
 ts demonstrate that spectral chaos in unobserved internal degrees of freed
 om can leave measurable traces in open quantum dynamics and quantum interf
 erence experiments.\\r\\n\\r\\n[1] P. Kos\, M. Ljubotina\, and T. Prosen\,
  “Many-body quantum chaos: Analytic connection to random matrix theory\,
 ” Physical Review X\, vol. 8\, no. 2\, p. 021062\, 2018.\\r\\n[2] C. Dit
 tel\, G. Dufour\, M.Walschaers\, G.Weihs\, A. Buchleitner\, and R. Keil\, 
 “Totally destructive many-particle interference\,” Phys. Rev. Lett.\, 
 vol. 120\, p. 240404\, Jun 2018.\\r\\n[3] C. Dittel\, G. Dufour\, G. Weihs
 \, and A. Buchleitner\, “Wave-particle duality of many-body quantum stat
 es\,” Physical Review X\, vol. 11\, no. 3\, p. 031041\, 2021.\\r\\n[4] M
 . Berkane\, G. Dufour\, and A. Buchleitner\, “In prepration\,”.
X-ALT-DESC:<p>We study the emergence of dissipative quantum chaos in a two-
 level system that is non-chaotic in isolation but coupled to a set of stru
 ctured internal modes. These internal degrees of freedom exhibit chaotic c
 haracteristics\, which are imprinted onto the reduced dynamics of the syst
 em. From a time-local master equation\, we derive an effective time-depend
 ent non-Hermitian Liouvillian and analyze its complex eigenvalues at each 
 time step. Spectral statistics [1] reveal that the two-level system can re
 tain clear signatures of quantum chaos present in its internal degree of f
 reedom\, under certain conditions. We further show that internal degree of
  freedominduced chaos correlates with the loss of coherence in the system\
 , quantified by the degradation of purity [2\, 3]. By extending the model 
 to two qubits\, we examine how chaotic internal modes degrade Hong-Ou-Mand
 el interference and thus generate particle distinguishability [4]. Our res
 ults demonstrate that spectral chaos in unobserved internal degrees of fre
 edom can leave measurable traces in open quantum dynamics and quantum inte
 rference experiments.</p>\n\n<p>[1] P. Kos\, M. Ljubotina\, and T. Prosen\
 , “Many-body quantum chaos: Analytic connection to random matrix theory\
 ,” <i>Physical Review X</i>\, vol. 8\, no. 2\, p. 021062\, <strong>2018<
 /strong>.</p>\n<p>[2] C. Dittel\, G. Dufour\, M.Walschaers\, G.Weihs\, A. 
 Buchleitner\, and R. Keil\, “Totally destructive many-particle interfere
 nce\,” <i>Phys. Rev. Lett.</i>\, vol. 120\, p. 240404\, Jun <strong>2018
 </strong>.</p>\n<p>[3] C. Dittel\, G. Dufour\, G. Weihs\, and A. Buchleitn
 er\, “Wave-particle duality of many-body quantum states\,<i>” Physical
  Review X</i>\, vol. 11\, no. 3\, p. 031041\, <strong>2021</strong>.</p>\n
 <p>[4] M. Berkane\, G. Dufour\, and A. Buchleitner\, “In prepration\,”
 .</p>
DTEND;TZID=Europe/Zurich:20260310T125500
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