Suppression of Decoherence tied to Electron-Phonon Coupling in Telecom-Compatible Quantum Dots: Low-threshold Reappearance Regime for Quantum State Inversion

Abstract

We demonstrate full suppression of dephasing tied to deformation potential coupling of confined electrons to longitunidal acoustic (LA) phonons in optical control experiments on large semiconductor quantum dots (QDs) with emission compatible with the low-dispersion telecommunications band at 1.3~$\mu$m. By exploiting the sensitivity of the electron-phonon spectral density to the size and shape of the QD, we demonstrate a four-fold reduction in the threshold pulse area required to enter the decoupled regime for exciton inversion using adiabatic rapid passage (ARP). Our calculations of the quantum state dynamics provide good agreement with our experimental results and indicate that the symmetry of the QD wave function provides an additional means to engineer the electron-phonon interaction. Our findings will support the development of solid-state quantum emitters in future distributed quantum networks using semiconductor QDs.

References in corpus (15)

• Generation of heralded entanglement between distant hole spins
• Ultrafast optical control of entanglement between two quantum dot spins
• Phonon induced Rabi frequency renormalization of optically driven single InGaAs/GaAs quantum dots
• Phase-tuned entangled state generation between distant spin qubits
• Semiconductor quantum dots as an ideal source of polarization entangled photon pairs on-demand: a review
• Bright single InAsP quantum dots at telecom wavelengths in position-controlled InP nanowires: the role of the photonic waveguide
• Quantum computers based on electron spins controlled by ultra-fast, off-resonant, single optical pulses
• Cavity-Enhanced Two-Photon Interference using Remote Quantum Dot Sources
• Two qubit conditional quantum logic operation in a single self-assembled quantum dot
• Coherent and robust high-fidelity generation of a biexciton in a quantum dot by rapid adiabatic passage
• Quantum State Transfer from a Single Photon to a Distant Quantum-Dot Electron Spin
• Demonstrating the decoupling regime of the electron-phonon interaction in a quantum dot using chirped optical excitation
• Phonon impact on optical control schemes of quantum dots: The role of quantum dot geometry and symmetry
• Efficient electron spin detection with positively charged quantum dots
• Energy transport and coherence properties of acoustic phonons generated by optical excitation of a quantum dot

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