BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Theory of Condensed Matter
SUMMARY:Disorder and Symmetries in Lindbladian models - Ar
 ijeet Pal\, UCL
DTSTART;TZID=Europe/London:20251016T140000
DTEND;TZID=Europe/London:20251016T151500
UID:TALK235255AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/235255
DESCRIPTION:The generation of entanglement in mixed states is 
 salient for quantum systems coupled to an environm
 ent. The dissipative and mixing properties of the 
 environment are unavoidable in physical platforms 
 for quantum simulation and information processing\
 , where entanglement can be a vital resource. For 
 a Markovian environment\, evolution of the system 
 density matrix is described by a Lindbladian super
 operator.  I will discuss two classes of Lindbladi
 an models for open quantum systems. The first one 
 involves disordered\, long-range jump operators wi
 th a quadratic Lindbladian. I will show that this 
 system undergoes a volume-to-area law entanglement
  phase transition in the mixed steady state\, as a
  consequence of localization tuned by the range of
  the jump-operators. The weakly-entangled localize
 d phase exhibits heterogeneity and remains stable 
 in the presence of coherent hopping. \n\nIn the se
 cond class of models\, I will demonstrate the robu
 stness of dynamical aspects of 𝑍2 × 𝑍2 symmetry-pr
 otected topological (SPT) order against a wide cla
 ss of dissipation channels with strong and weak sy
 mmetries.  The strong symmetries host a decoherenc
 e-free steady-state subspace consisting of two del
 ocalized logical qubits. Contrastingly\, the local
 ized edge qubits correspond to weak symmetries and
  thus retain memory of their initial state in the 
 quantum trajectories which can be unravelled via c
 ontinuous monitoring. I will discuss the potential
  for dynamically stabilizing entangled states and 
 memory in experiments with dissipative synthetic q
 uantum matter.
LOCATION:Seminar Room 3\, RDC
CONTACT:Gaurav
END:VEVENT
END:VCALENDAR