Kavli Affiliate: Simon Groblacher
| First 5 Authors: Amirparsa Zivari, Robert Stockill, Niccolò Fiaschi, Simon Gröblacher,
| Summary:
Quantum optics – the creation, manipulation and detection of non-classical
states of light – is a fundamental cornerstone of modern physics, with many
applications in basic and applied science. Achieving the same level of control
over phonons, the quanta of vibrations, could have a similar impact, in
particular on the fields of quantum sensing and quantum information processing.
Here we demonstrate the first step towards this level of control and realize a
single-mode waveguide for individual phonons in a suspended silicon
micro-structure. We use a cavity-waveguide architecture, where the cavity is
used as a source and detector for the mechanical excitations, while the
waveguide has a free standing end in order to reflect the phonons. This enables
us to observe multiple round-trips of the phonons between the source and the
reflector. The long mechanical lifetime of almost 100 $mu s$ demonstrates the
possibility of nearly lossless transmission of single phonons over, in
principle, tens of centimeters. Our experiment represents the first
demonstration of full on-chip control over traveling single phonons strongly
confined in the directions transverse to the propagation axis and paves the way
to a time-encoded multimode quantum memory at telecom wavelength and advanced
quantum acoustics experiments.
| Search Query: ArXiv Query: search_query=au:”Simon Groblacher”&id_list=&start=0&max_results=10