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Scalable designs for quantum computing with rare-earth-ion-doped crystals

Wesenberg, Janus H; Molmer, Klaus; Rippe, Lars LU and Kröll, Stefan LU (2007) In Physical Review A (Atomic, Molecular and Optical Physics) 75(1).
Abstract
Due to inhomogeneous broadening, the absorption lines of rare-earth-ion dopants in crystals are many order of magnitudes wider than the homogeneous linewidths. Several ways have been proposed to use ions with different inhomogeneous shifts as qubit registers, and to perform gate operations between such registers by means of the static dipole coupling between the ions. In this paper we show that in order to implement high-fidelity quantum gate operations by means of the static dipole interaction, we require the participating ions to be strongly coupled, and that the density of such strongly coupled registers in general scales poorly with register size. Although this is critical to previous proposals which rely on a high density of... (More)
Due to inhomogeneous broadening, the absorption lines of rare-earth-ion dopants in crystals are many order of magnitudes wider than the homogeneous linewidths. Several ways have been proposed to use ions with different inhomogeneous shifts as qubit registers, and to perform gate operations between such registers by means of the static dipole coupling between the ions. In this paper we show that in order to implement high-fidelity quantum gate operations by means of the static dipole interaction, we require the participating ions to be strongly coupled, and that the density of such strongly coupled registers in general scales poorly with register size. Although this is critical to previous proposals which rely on a high density of functional registers, we describe architectures and preparation strategies that will allow scalable quantum computers based on rare-earth-ion-doped crystals. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review A (Atomic, Molecular and Optical Physics)
volume
75
issue
1
publisher
American Physical Society (APS)
external identifiers
  • wos:000243894100031
  • scopus:33846349112
ISSN
1050-2947
DOI
10.1103/PhysRevA.75.012304
language
English
LU publication?
yes
id
18da8c43-ca11-4b49-8019-a4f169c3f761 (old id 674965)
date added to LUP
2007-12-19 11:06:10
date last changed
2017-10-22 03:46:47
@article{18da8c43-ca11-4b49-8019-a4f169c3f761,
  abstract     = {Due to inhomogeneous broadening, the absorption lines of rare-earth-ion dopants in crystals are many order of magnitudes wider than the homogeneous linewidths. Several ways have been proposed to use ions with different inhomogeneous shifts as qubit registers, and to perform gate operations between such registers by means of the static dipole coupling between the ions. In this paper we show that in order to implement high-fidelity quantum gate operations by means of the static dipole interaction, we require the participating ions to be strongly coupled, and that the density of such strongly coupled registers in general scales poorly with register size. Although this is critical to previous proposals which rely on a high density of functional registers, we describe architectures and preparation strategies that will allow scalable quantum computers based on rare-earth-ion-doped crystals.},
  author       = {Wesenberg, Janus H and Molmer, Klaus and Rippe, Lars and Kröll, Stefan},
  issn         = {1050-2947},
  language     = {eng},
  number       = {1},
  publisher    = {American Physical Society (APS)},
  series       = {Physical Review A (Atomic, Molecular and Optical Physics)},
  title        = {Scalable designs for quantum computing with rare-earth-ion-doped crystals},
  url          = {http://dx.doi.org/10.1103/PhysRevA.75.012304},
  volume       = {75},
  year         = {2007},
}