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SUMMARY:Probabilistic generation of two-mode binomial cat states using cro
 ss-Kerr interactions
DTSTART:20260916T113000Z
DTEND:20260916T133000Z
DTSTAMP:20261013T004300Z
UID:indico-event-9879@indico.fysik.su.se
DESCRIPTION:Abstract: Superpositions of macroscopically distinct coherent 
 states\, or cat states\, are a key resource for quantum technologies. In p
 articular\, two-mode binomial cat states can give rise to exact quantum er
 ror correction in continuous-variable quantum computing. However\, their p
 reparation typically requires non-Gaussian initial states\, such as Fock o
 r NOON states\, which are challenging to realize experimentally. In this t
 alk\, we propose a protocol to generate two-mode binomial cat states where
  the only requirements are Gaussian initial states in combination with her
 alded heterodyne measurements. Our approach utilizes cross-Kerr interactio
 ns between bosonic modes commonly realizable in superconducting circuit ar
 chitectures. We show that by adjusting the input state parameters\, our pr
 otocol remains robust to dissipation under realistic experimental conditio
 ns. Our work provides a practical route to realizing multinomial cat state
 s in current experimental platforms without requiring non-Gaussian initial
  resources\, overcoming a key limitation of existing preparation schemes. 
 The talk is structured as follows. We first introduce the concept of cat s
 tate\, and then discuss the protocol in a closed system. Next\, we talk ab
 out the impact of noise\, and end the talk with a brief mentioning on the 
 possible extension to a broader class of cat states.\n\nhttps://indico.fys
 ik.su.se/event/9879/
URL:https://indico.fysik.su.se/event/9879/
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