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TZID:Europe/Vienna
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DTSTART:20230326T030000
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DTSTART:20231029T020000
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DTSTAMP:20260424T143453Z
UID:644b64564e1b3201505892@ist.ac.at
DTSTART:20230516T130000
DTEND:20230516T140000
DESCRIPTION:Speaker: Seyed Shabir Barzanjeh\nhosted by Johannes Fink\nAbstr
 act: My talk will cover the use of nonlinearity in quantum optics to desig
 n quantum-limited amplifiers or generate entanglement. In the first part\,
  I will discuss a new design for microwave degenerate parametric amplifier
 s (DPAs) that uses kinetic inductance to overcome limitations caused by hi
 gh-order nonlinearities from Josephson junctions. The resulting DPA exhibi
 ts phase-sensitive gains of up to 40 dB\, operating close to the quantum n
 oise limit\, and provides new opportunities for sensitive microwave measur
 ements. In the second part of my talk\, I will discuss entanglement genera
 tion in silicon-based Topologically insulate Floquet defect mode resonance
  (FDMR) systems. Our study leverages a resonance effect in the bulk of an 
 FDMR to demonstrate enhanced entangled photon pair generation. We achieve 
 second-order cross correlation of photon pairs 300 times higher than witho
 ut resonance\, thanks to a wavelength-tunable FDMR with Q-factors up to 10
 ^5 and FSR ~5 nm. Our results provide new insights into generating and man
 ipulating entanglement in quantum systems\, which has important implicatio
 ns for quantum communication and computation.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Seyed Shabir Barzanjeh: From Superconducting Circuits to Topologica
 l Insulator Floquet Modes: Singal Amplification and Generating Entanglemen
 t
URL:https://talks-calendar.ista.ac.at/events/4147
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