Cargando…
Optical switching of nuclear spin–spin couplings in semiconductors
Two-qubit operation is an essential part of quantum computation. However, solid-state nuclear magnetic resonance quantum computing has not been able to fully implement this functionality, because it requires a switchable inter-qubit coupling that controls the time evolutions of entanglements. Nuclea...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2011
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144591/ https://www.ncbi.nlm.nih.gov/pubmed/21730962 http://dx.doi.org/10.1038/ncomms1378 |
_version_ | 1782209011573063680 |
---|---|
author | Goto, Atsushi Ohki, Shinobu Hashi, Kenjiro Shimizu, Tadashi |
author_facet | Goto, Atsushi Ohki, Shinobu Hashi, Kenjiro Shimizu, Tadashi |
author_sort | Goto, Atsushi |
collection | PubMed |
description | Two-qubit operation is an essential part of quantum computation. However, solid-state nuclear magnetic resonance quantum computing has not been able to fully implement this functionality, because it requires a switchable inter-qubit coupling that controls the time evolutions of entanglements. Nuclear dipolar coupling is beneficial in that it is present whenever nuclear–spin qubits are close to each other, while it complicates two-qubit operation because the qubits must remain decoupled to prevent unwanted couplings. Here we introduce optically controllable internuclear coupling in semiconductors. The coupling strength can be adjusted externally through light power and even allows on/off switching. This feature provides a simple way of switching inter-qubit couplings in semiconductor-based quantum computers. In addition, its long reach compared with nuclear dipolar couplings allows a variety of options for arranging qubits, as they need not be next to each other to secure couplings. |
format | Online Article Text |
id | pubmed-3144591 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-31445912011-08-17 Optical switching of nuclear spin–spin couplings in semiconductors Goto, Atsushi Ohki, Shinobu Hashi, Kenjiro Shimizu, Tadashi Nat Commun Article Two-qubit operation is an essential part of quantum computation. However, solid-state nuclear magnetic resonance quantum computing has not been able to fully implement this functionality, because it requires a switchable inter-qubit coupling that controls the time evolutions of entanglements. Nuclear dipolar coupling is beneficial in that it is present whenever nuclear–spin qubits are close to each other, while it complicates two-qubit operation because the qubits must remain decoupled to prevent unwanted couplings. Here we introduce optically controllable internuclear coupling in semiconductors. The coupling strength can be adjusted externally through light power and even allows on/off switching. This feature provides a simple way of switching inter-qubit couplings in semiconductor-based quantum computers. In addition, its long reach compared with nuclear dipolar couplings allows a variety of options for arranging qubits, as they need not be next to each other to secure couplings. Nature Publishing Group 2011-07 2011-07-05 /pmc/articles/PMC3144591/ /pubmed/21730962 http://dx.doi.org/10.1038/ncomms1378 Text en Copyright © 2011, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Goto, Atsushi Ohki, Shinobu Hashi, Kenjiro Shimizu, Tadashi Optical switching of nuclear spin–spin couplings in semiconductors |
title | Optical switching of nuclear spin–spin couplings in semiconductors |
title_full | Optical switching of nuclear spin–spin couplings in semiconductors |
title_fullStr | Optical switching of nuclear spin–spin couplings in semiconductors |
title_full_unstemmed | Optical switching of nuclear spin–spin couplings in semiconductors |
title_short | Optical switching of nuclear spin–spin couplings in semiconductors |
title_sort | optical switching of nuclear spin–spin couplings in semiconductors |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144591/ https://www.ncbi.nlm.nih.gov/pubmed/21730962 http://dx.doi.org/10.1038/ncomms1378 |
work_keys_str_mv | AT gotoatsushi opticalswitchingofnuclearspinspincouplingsinsemiconductors AT ohkishinobu opticalswitchingofnuclearspinspincouplingsinsemiconductors AT hashikenjiro opticalswitchingofnuclearspinspincouplingsinsemiconductors AT shimizutadashi opticalswitchingofnuclearspinspincouplingsinsemiconductors |