Rinaldo Trotta

TL;DR: In this paper, the authors presented a solid-state source of on-demand single photons yielding a raw second-order coherence of g(2)(0)=(7.5±1.6)×10−5 without any background subtraction or data processing.

TL;DR: GaAs quantum dots can emit triggered polarization-entangled photons with high purity, which shows that GaAs might be the material of choice for quantum-dot entanglement sources in future quantum technologies.

TL;DR: It is demonstrated experimentally and theoretically that it is always possible to restore the excitonic degeneracy by the simultaneous application of large strain and electric fields, and highlights the potential of combining complementary external fields to create artificial atoms meeting the stringent requirements posed by scalable semiconductor-based quantum technology.

TL;DR: In this article, the authors used GaAs quantum dots integrated on a patterned piezoelectric actuator capable of suppressing the exciton fine structure splitting to achieve nearly maximally entangled photon pairs from semiconductor quantum dots without resorting to postselection techniques.

TL;DR: This work introduces quantum dot-based sources of polarization-entangled photons whose energy can be tuned via three-directional strain engineering without degrading the degree of entanglement of the photon pairs.