Quantum Communication with Quantum Dot Spins

Abstract

Single electron spins in quantum dots are attractive for quantum communication because of their expected long coherence times. We propose a method to create entanglement between two remote spins based on the coincident detection of two photons emitted by the dots. Local nodes of several qubits can be realized using the dipole-dipole interaction between trions in neighboring dots and spectral addressing, allowing the realization of quantum repeater protocols. We have performed a detailed feasibility study of our proposal based on tight-binding calculations of quantum dot properties.

4 pages, 2 figures, new and improved version, explicit performance estimates

References in corpus (5)

• Fault-tolerant Quantum Communication with Minimal Physical Requirements
• Fault-tolerant quantum repeaters with minimal physical resources, and implementations based on single photon emitters
• Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
• Optical Read-Out and Initialization of an Electron Spin in a Single Quantum Dot
• Selective spin coupling through a single exciton

Cited by in corpus (18)

• Giant optical Faraday rotation induced by a single electron spin in a quantum dot: Applications to entangling remote spins via a single photon
• Quantum Transduction of Telecommunications-band Single Photons from a Quantum Dot by Frequency Upconversion
• Quantum Repeaters based on Single Trapped Ions
• Quantum repeaters based on Rydberg-blockade coupled atomic ensembles
• Heralded quantum repeater for a quantum communication network based on quantum dots embedded in optical microcavities
• Quantum repeaters with entangled coherent states
• Externally mode-matched cavity quantum electrodynamics with charge-tunable quantum dots
• Dark exciton optical spectroscopy of a semiconducting quantum dot embedded in a nanowire
• Subnanosecond spectral diffusion of a single quantum dot in a nanowire
• Spatial multiplexing of atom-photon entanglement sources using feed-forward controls and switching networks
• Extraction of the homogeneous linewidth of a fast spectrally diffusing line
• Heralded high-efficiency quantum repeater with atomic ensembles assisted by faithful single-photon transmission
• Decay dynamics of quantum dots influenced by the local density of optical states of two-dimensional photonic crystal membranes
• Prospects for storage and retrieval of a quantum dot single photon in an ultracold ${}^{87}$Rb ensemble
• Analysis of photon-mediated entanglement between distinguishable matter qubits
• Entanglement Dynamics of Molecular Exciton States in Coupled Quantum Dots
• Interferometry of multi-level systems: rate-equation approach for a charge qudit
• Quantum repeaters based on individual electron spins and nuclear-spin-ensemble memories in quantum dots