Abstract

Exciton-polariton condensates have attractive features for quantum computation, e.g., room temperature operation, high dynamical speed, ease of probe, and existing fabrication techniques. Here, we present a complete theoretical scheme of quantum computing with exciton-polariton condensates formed in semiconductor micropillars. Quantum fluctuations on top of the condensates are shown to realize qubits, which are externally controllable by applied laser pulses. Quantum tunneling and nonlinear interactions between the condensates allow SWAP, square-root-SWAP and controlled-NOT gate operations between the qubits.

Details

Title
Quantum computing with exciton-polariton condensates
Author
Ghosh Sanjib 1   VIAFID ORCID Logo  ; Liew Timothy C H 2 

1  Nanyang Technological University, School of Physical and Mathematical Sciences, Singapore, Singapore (GRID:grid.59025.3b) (ISNI:0000 0001 2224 0361) 
2  Nanyang Technological University, School of Physical and Mathematical Sciences, Singapore, Singapore (GRID:grid.59025.3b) (ISNI:0000 0001 2224 0361); Nanyang Technological University, MajuLab, International Joint Research Unit UMI 3654, CNRS, Université Côte d’Azur, Sorbonne Université, National University of Singapore, Singapore, Singapore (GRID:grid.59025.3b) (ISNI:0000 0001 2224 0361) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20566387
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41534-020-0244-x
ProQuest document ID
2488773517
Copyright
© The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.