Current detection of superradiance and induced entanglement of double quantum dot excitons

Abstract

We propose to measure the superradiance effect by observing the current through a semiconductor double-dot ststem. An electron and a hole are injected separately into one of the quantum dots to form an exciton and then recombine radiatively. We find that the stationary current shows oscillatory behavior as one varies the inter-dot distance. The amplitude of oscillation can be increased by incorporating the system into a microcavity. Furthermore, the current is suppressed if the dot distance is small compared to the wavelength of the emitted photon. This photon trapping phenomenon generates the entangled state and may be used to control the emission of single photons at predetermined times.

5 pages, 3 figures, to appear in Phys. Rev. Lett. (2003)

Cited by in corpus (10)

• Surface plasmons in a metal nanowire coupled to colloidal quantum dots: Scattering properties and quantum entanglement
• Proposal for teleportation of charge qubits via superradiance
• Shot noise spectrum of superradiant entangled excitons
• Orientations of two coupled molecules
• Space-time dual quantum Zeno effect: Interferometric engineering of open quantum system dynamics
• Early Stage of Superradiance from Bose-Einstein Condensates
• Current noise of a quantum dot p-i-n junction in a photonic crystal
• Proposal for detection of non-Markovian decay via current noise
• Superradiant and Aharonov-Bohm effect for the quantum ring exciton
• Superradiance by ferroelectrics in cavity resonators