Jul 17 – 22, 2022
Royal Conservatory of Music, Toronto
America/Toronto timezone

Rapid Quantum Squeezing by Jumping the Harmonic Oscillator Frequency

Jul 18, 2022, 5:00 PM
1h 30m
Hart House (Hart House)

Hart House

Hart House

7 Hart House Cir, Toronto, ON M5S 3H3
Poster presentation Quantum optics and hybrid quantum systems Poster session


Quantum sensing and quantum information processing use quantum advantages such as squeezed states that encode a quantity of interest with higher precision and generate quantum correlations to outperform classical methods. In harmonic oscillators, the rate of generating squeezing is set by a quantum speed limit. Therefore, the degree to which a quantum advantage can be used in practice is limited by the time needed to create the state relative to the rate of unavoidable decoherence. Alternatively, a sudden change of harmonic oscillator’s frequency projects a ground state into a squeezed state which can circumvent the time constraint. Here, we create squeezed states of atomic motion by sudden changes of the harmonic oscillation frequency of atoms in an optical lattice. Building on this protocol, we demonstrate rapid quantum amplification of a displacement operator that could be used for detecting motion. Our results can speed up quantum gates and enable quantum sensing and quantum information processing in noisy environments.
Reference: Mingjie Xin, Wui Seng Leong, Zilong Chen, Yu Wang, and Shau-Yu Lan. Phys. Rev. Lett.127,183602(2021).

Presenter name Xin, Mingjie

Primary authors

Dr Mingjie Xin (Nanyang Technology University) Dr Wui Seng Leong (Nanyang Technology University) Prof. Shau-Yu Lan (Nanyang Technology University)

Presentation materials

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