Generation and teleportation of photonic entanglement using semidonductor nanostructures

Beschreibung

Semiconductor quantum dots (QDs) obtained by epitaxial growth are regarded as one of the most promising solid-state sources of triggered single and entangled photons for applications in emerging quantum communication and photonic quantum-information-processing. In this talk, we will focus on GaAs QDs in AlGaAs matrix [1,2], which show a unique combination of appealing features: fast radiative rates of ~5 GHz, capability of generating near perfectly entangled photon pairs [3] with good indistinguishability [4], ultralow multiphoton emission probability [5], high brightness [6], as well as wavelength (~800 nm) suitable for free-space quantum communication. Some of these properties were recently used to implement photonic quantum teleportation and entanglement swapping using photons sequentially emitted by the same quantum dot [7]. Because of the statistical fluctuations in the optical properties of different QDs in an ensemble, scaling up the QD hardware is still an open challenge. Realistic strategies and encouraging results relying on post-growth tuning of the QD properties [8-11] will be discussed.

Zeitraum	17 Sep. 2019
Ereignistitel	International Conference on Emerging Quantum Technology (ICEQT) 2019
Veranstaltungstyp	Konferenz
Ort	ChinaAuf Karte anzeigen