Graduate Student Seminars

Graduate Student Seminar with Chandrashekhar Gaikwad on Josephson Parametric Amplifiers

Chandrashekhar Gaikwad of Washington University in St. Louis will be presenting the seminar "Josephson Parametric Amplifiers and Exceptional Points"

The study of non-Hermitian systems with Exceptional Points (EP) has opened up a path to explore an abundance of new phenomenon such as quantum sensors, quantum gates and breakdown of bulk-boundary correspondence. Experimental realization of a typical non-Hermitian system involves complicated bath engineering around a Hermitian system. Which is a quantum setup and will give rise to unavoidable random fluctuations. To circumvent these issues we will implement a theoretical solution proposed in Ref[1, 2] to map a non-Hermitian system onto coupled Josephson parametric amplifiers (JPAs).

[1] Yu-Xin Wang and A. A. Clerk, Non-Hermitian dynam-ics without dissipation in quantum systems. PHYSICAL REVIEW A 99, 063834 (2019)

[2] Arkadev Roy, Saman Jahani, Qiushi Guo, Avik Dutt, Shanhui Fan, Mohammad-Ali Miri, Alireza Marandi, Nondissipative non-Hermitian dynamics and exceptional points in coupled optical parametric oscillators. Optica Vol. 8, Issue 3, pp. 415-421 (2021)