Generation of EPR pairs and interconversion of static and flying electron spin qubits

Abstract

We propose a method of generating fully entangled electron spin pairs using an open static quantum dot and a moving quantum dot, realized by the propagation of a surface acoustic wave (SAW) along a quasi-one-dimensional channel in a semiconductor heterostructure. In particular, we consider a static dot (SD) loaded with two interacting electrons in a singlet state and demonstrate a mechanism which enables the moving SAW-dot to capture and carry along one of the electrons, hence yielding a fully entangled static-flying pair. We also show how with the same mechanism we can load the SD with one or two electrons which are initially carried by a SAW-induced dot. The feasibility of realizing these ideas with existing semiconductor technology is demonstrated and extended to yield flying or static pairs that are fully entangled and arbitrary interconversion of static and flying electron spin qubits.

6 pages, 5 figures

References in corpus (5)

• Single-shot readout of electron spin states in a quantum dot using spin-dependent tunnel rates
• Entanglement of Two Impurities through Electron Scattering
• Coulomb scattering in a 2D interacting electron gas and production of EPR pairs
• Quantum entanglement generation with surface acoustic waves
• Generation of Spin Entanglement in Nonequilibrium Quantum Dots

Cited by in corpus (2)

• Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits
• Acoustoelectric current in graphene due to electron deformation potential and piezoelectric phonon couplings