2015/12/06 by Daniel Kienzler, D. Kienzler, Christa Flühmann +11 · 2 citations
Computer Science · Engineering · Physics and Astronomy · #Computer network #Computer science #Interference (communication) #Mechanical and Optical Resonators #Network packet #Nonlinear Dynamics and Pattern Formation #Photonic and Optical Devices #Physics #Quantum #Quantum interference #Quantum mechanics #Telecommunications #Wave packet #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physrevlett.116.140402
published as Phys. Rev. Lett. 116, 140402 (2016)
arxiv created 2015/12/06 · openalex publication_date 2016/04/05 · arxiv updated 2016/04/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We directly observe the quantum interference between two well-separated trapped-ion mechanical oscillator wave packets. The superposed state is created from a spin-motion entangled state using a heralded measurement. Wave packet interference is observed through the energy eigenstate populations. We reconstruct the Wigner function of these states by introducing probe Hamiltonians which measure Fock state populations in displaced and squeezed bases. Squeezed-basis measurements with 8 dB squeezing allow the measurement of interference for Δα=15.6, corresponding to a distance of 240 nm between the two superposed wave packets.