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Updated: Aug 8, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Deutsch-jozsa algorithm using triggered single photons from a single quantum dot
M Scholz1, T Aichele, S Ramelow
1Physics Department, Nano-Optics, Humboldt-University Berlin, Hausvogteiplatz 5-7, D-10117 Berlin, Germany.
Abstract:
We demonstrate a two-qubit Deutsch-Jozsa algorithm with single photons from a single InP quantum dot. The qubits are implemented via the spatial mode and the polarization of a single photon. Our photon source is operated both under continuous and pulsed excitation, the latter allowing deterministic quantum logic by generating photons on demand with a strong suppression of two-photon events. The computation reached a success probability of up to 79%. We also exploit the concept of decoherence-free subspaces that helps to make our experimental setup robust against sources of phase noise.
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