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DTSTAMP:20260424T143323Z
UID:68e3b1855f33f159634823@ist.ac.at
DTSTART:20251015T150000
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DESCRIPTION:Speaker: Alvise Borgognoni\nhosted by Johannes Fink\nAbstract: 
 Superconducting circuits are macroscopic networks of superconducting wires
  and plates forming distributed inductances and capacitances that sustain 
 microwave electromagnetic fields. Superconductivity ensures minimal loss\,
  while Josephson junctions introduce a cosine-phase nonlinearity with negl
 igible dissipation and dephasing. By tuning the relative energy scales and
  connectivity of inductors\, capacitors\, and Josephson junctions\, one ca
 n realize a wide range of quantum systemsfrom amplifiers to superconductin
 g qubits. This naturally raises the question: can new components further a
 dvance circuit quantum engineering? The answer is yes. Incorporating eleme
 nts that generate terms such as phase slips (cos(2N))\, Cooper-pair pairin
 g (cos(2))\, and Cooper-pair halving (cos(/2)) into the Hamiltonian enable
 s enhanced device performance and the design of qubits intrinsically prote
 cted from relaxation and decoherence. In this talk\, I will show how the p
 hysics of the cos(2) element can emerge effectively in multimode circuits 
 built from conventional materials\, and how this element can be harnessed 
 either to improve qubit error resilience or to mediate high-order photon i
 nteractions in a resonator.
LOCATION:Office Bldg West / Ground floor / Foyer seminar room (I21.EG.128)\
 , ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Alvise Borgognoni: Engineering cos2phi Hamiltonians with multimode 
 circuits
URL:https://talks-calendar.ista.ac.at/events/6066
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