Two-electron double quantum dot coupled to coherent photon and phonon fields

The 2019 surface acoustic waves roadmap

“…As in QO, we can distinguish two main uses of the acoustic field in QA: one, to provide an effective classical field to modify the motional or internal state of a quantum system, while the other is as a quantum system in its own right, using its full state space. In semiconductor implementations, uses of the first type have been demonstrated: single natural and artificial atomic systems have been coherently driven by SAWs with evidence of phonon-dressed atomic states [46] and phonon-assisted dark states (see section 4) being reported, as well as the modulation of energy levels of quantum dots [7]. Moreover, SAWs have been used to provide moving potential wells for semiconductor quasiparticles as a route towards quantum channels for single electrons (see section 3) and the study of many-body quantum ground states of an exciton-polariton condensate in SAW-induced lattices [47].…”

Real-Space Characterization of Cavity-Coupled Waveguide Systems in Hypersonic Phononic Crystals

“…electrons [17][18][19][20] and spins [21][22][23][24][25][26][27][28], thus giving rise to development of novel hybrid architectures. In the above systems, hypersonic vibrations can be exploited to efficiently actuate and modulate these energy particles, and to inter-connect information between different subsystems, which offers new opportunities in emerging fields such as quantum-acoustics [8][9][10][11][12][13][14][15] and spin-mechanics [21][22][23][24][25][26][27][28].…”

Surface-acoustic-wave resonators with Ti, Cr, and Au metallization on GaAs

“…[10][11][12] A double quantum dot (DQD) in a SAW resonator provides an unique opportunity for studying electron-phonon interactions. 13,14) If other decoherence effects can be neglected, coherent coupling may solve the intrinsic phonon scattering problems in semiconductor devices. 15) Such a DQD-SAW hybrid system can be fabricated by patterning a thin metal layer on an AlGaAs/ GaAs heterostructure, where a charge qubit interacts with SAW phonons in the resonator mode.…”