https://doi.org/10.1140/epjd/s10053-023-00753-y
Regular Article – Quantum Optics
Collective states of photons and phonons via inter-modal Brillouin scattering
Department of Physics, Holon Institute of Technology, 5810201, Holon, Israel
Received:
3
May
2023
Accepted:
30
August
2023
Published online:
23
September
2023
We explore the possibility of the formation of photon–phonon collective states in nanoscale wires by exploiting stimulated inter-modal Brillouin scattering of co-propagating photons that belong to distinct spatial optical modes. Inside nanowires, the photon–phonon coupling is significantly enhanced owing to radiation pressure. The Stokes and anti-Stokes processes are decoupled as they involve different phonon modes that lead to symmetry breaking, which results from different phase-matching requirements. For the Stokes process photon–phonon pairs are annihilated and created, in the presence of a classical field, and for the anti-Stokes process we obtain coherent oscillations between photons and phonons. The appearance of collective states, at hundreds of milli-Kelvin temperatures, can extend the use of nanowires into quantum information processing involving photons and phonons in a setup that can be easily integrated into an on-chip network.
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