PIRSA:23110078

Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL

APA

Shi, H. (2023). Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL. Perimeter Institute. https://pirsa.org/23110078

MLA

Shi, Haowei. Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL. Perimeter Institute, Nov. 27, 2023, https://pirsa.org/23110078

BibTex

          @misc{ pirsa_PIRSA:23110078,
            doi = {10.48660/23110078},
            url = {https://pirsa.org/23110078},
            author = {Shi, Haowei},
            keywords = {Quantum Information},
            language = {en},
            title = {Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {nov},
            note = {PIRSA:23110078 see, \url{https://pirsa.org}}
          }
          

Haowei Shi University of Southern California

Abstract

Squeezing has proven to be a powerful tool for suppressing noise in bosonic quantum sensing and communication. However, it is fragile and the resulting quantum advantage is extremely vulnerable to loss and noise. In this seminar, I will first overview the method of formulating loss and noise and thereby characterizing the practical quantum advantages. Then I will present our recent progress on entanglement-assisted protocols using two-mode squeezed-vacuum states, which are robust to loss and noise. I will demonstrate the quantum advantages in three scenarios: dark matter search, absorption spectroscopy, and telecommunication. Notably, we derived the ultimate precision limit of noise sensing and dark matter search. As a result, we found the two-mode squeezed vacuum is the optimal quantum source for dark matter search at the limit of strong squeezing. This optimality extends to entanglement-assisted communication. In each of the presented scenarios, entanglement-assisted protocols yield quantum advantages of orders of magnitude over classical protocols.

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Zoom link https://pitp.zoom.us/j/94873478582?pwd=c1dxNEVtMGx0ZU4vZjRvTU5OakZoUT09