Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Subjects physics
Date Wednesday 11 October 2023
Time 13:30
Institute DPT-PHYS-ENS
Seminar Room ConfIV (E244) - Dépt de Physique de l'ENS - 24 rue Lhomond 75005 PARIS
Speaker's Last Name Chu
Speaker's First Name Yiwen
Speaker's Email Address
Speaker's Institution ETH Zurich
Title The quantum world of massive mechanical objects
Abstract One of the first model systems we encounter in quantum mechanics class is a mass on a spring. However, in practice, it is not easy to observe a massive mechanical object exhibiting the quantum properties of a harmonic oscillator, such as zero-point fluctuations, energy quantization, or quantum superpositions. Nevertheless, in recent years, it has become possible to control and the measure the quantum states of the motion of macroscopic mechanical objects. I will present our recent experiments on creating “Schrödinger cat” states in a bulk acoustic wave resonator by coupling it to a superconducting circuit, and how we can observe the quantum ground state of a several hundred microgram mechanical mode using light. I will also discuss the applications of these systems in quantum information, quantum sensing, and explorations of fundamental physics.
arXiv Preprint Number

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