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Introduction to quantum non-reciprocal interactions: from non-Hermitian Hamiltonians to quantum master equations and quantum feedforward schemes

by Aashish A. Clerk

Submission summary

As Contributors: Aashish Clerk
Arxiv Link: (pdf)
Date submitted: 2022-01-10 17:53
Submitted by: Clerk, Aashish
Submitted to: SciPost Physics Lecture Notes
Academic field: Physics
  • Quantum Physics
Approach: Theoretical


These lecture notes from the 2019 Les Houches Summer School on Quantum Information Machines provides a pedagogical introduction to the theory of non-reciprocal quantum interactions and devices. The goal is connect various approaches and concepts, including Hamiltonians encoding synthetic gauge fields, scattering descriptions, quantum master equations, and non-Hermitian Hamiltonians. The importance of having both non-trivial synthetic gauge fields and dissipation for obtaining non-reciprocal interactions is stressed. Connections to broader topics such as quantum reservoir engineering and the quantum theory of continuous-measurement based feedforward are also discussed.

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Submission 2201.00894v1 on 10 January 2022

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