Fig. 1: Heralded generation of Quantum non-Gaussian states of motion of a levitated nanoparticle.
From: Heralded quantum non-Gaussian states in pulsed levitating optomechanics
a Illustration of an optomechanical system with a levitated NP trapped within an optical cavity by an optical tweezer. The motion of the NP is coupled to the cavity field via coherent scattering. b Experimental implementation of single-phonon addition or subtraction with known experimental parameters and technical imperfections. c The protocol and theory model for generating and verifying QNG mechanical states in a pulsed optomechanical system. The system comprises a cooled mechanical oscillator (denoted by annihilation operator b) coupled to an optical cavity mode (denoted by a). The coupling is enabled by pulsed laser light and lasts for a duration τ1 with Hamiltonian H1 (beam splitter or parametric squeezing interaction). Upon a photon detection at the array of APDs 1, the mechanical state is projected onto a non-Gaussian quantum state. The generated mechanical state is then transferred to the optical mode via the beam splitter interaction H2 for a duration τ2 and verified at the array of APDs 2.
