Acoustic and phononic quantum interfaces
Strain and phonons provide another quantum information channel.
$$H_{\rm sp}=\hbar g_m(\sigma_+b+\sigma_-b^\dagger)$$
Physical intuition
Strain and phonons provide another quantum information channel.
Deep dive: physical mechanism
Spin–strain or charge–phonon coupling links semiconductor qubits to mechanical modes.
What is measured experimentally?
Sideband spectroscopy detects spin–phonon interactions.
Assumptions, noise and limitations
Thermal phonon occupation and acoustic loss can be limiting.
Research and simulation exercise
Estimate thermal occupation of a GHz mechanical mode.
Connect the ideas
Explore the chapter overview, learning path, and references.