Title :
Fast, high fidelity, single-shot quantum non-demolition measurement of a quantum dot electron spin using cavity exciton-polariton resonance
Author :
Puri, Shruti ; McMahon, Peter ; Yamamoto, Yusaku
Author_Institution :
E.L. Ginzton Lab., Stanford Univ., Stanford, CA, USA
Abstract :
We propose a novel scheme for a single-shot, fast (10s of nanoseconds), high fidelity (99.95%) quantum non-demolition (QND) readout of quantum dot (QD) electron spins based on their spin-dependent Coulomb exchange interaction with optically-excited quantum well (QW) microcavity exciton-polaritons.
Keywords :
excitons; microcavities; optical variables measurement; polaritons; quantum computing; quantum optics; semiconductor quantum dots; semiconductor quantum wells; QD; QND; QW; cavity exciton-polariton resonance; fast quantum nondemolition measurement; high fidelity quantum nondemolition measurement; high fidelity quantum nondemolition readout; optically-excited quantum well microcavity exciton-polaritons; quantum dot electron spins; single-shot quantum nondemolition measurement; spin-dependent Coulomb exchange interaction; time 10 s; Current measurement; Electron optics; Microcavities; Optical buffering; Probes; Quantum computing; Quantum dots;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
