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Title: Group of Quantum Bits Acting as a Bit Using a Single-Domain Ferromagnet of Uniaxial Magnetic Ions

Abstract

Read/write operations with individual quantum bits (i.e., qbits) are a demanding concern to solve in quantum computing. To alleviate this difficulty, we considered the possibility of using a group of qbits that act collectively as a bit (hereafter, a group bit or a gbit, in short). A promising candidate for a gbit is a single-domain ferromagnet (SDF) independent of its size, which can be prepared as a magnet of well-separated uniaxial magnetic ions (UMIs) at sites of no electric dipole moment with their uniaxial axes aligned along one common direction. When magnetized, the UMIs of such a magnet have a ferromagnetic (FM) arrangement and the resulting SDF becomes a gbit with its two opposite moment orientations representing the |0⟩ and |1⟩ states of a bit. Here, we probed the requirements for such magnets and identified several 2H-perovskites as materials satisfying these requirements.

Authors:
 [1];  [2];  [3];  [4]; ORCiD logo [5]
  1. North Carolina State Univ., Raleigh, NC (United States)
  2. Kyung Hee Univ., Seoul (Korea)
  3. Chinese Academy of Sciences (CAS), Fuzhou (China)
  4. Max Planck Inst. for Solid State Research, Stuttgart (Germany)
  5. North Carolina State Univ., Raleigh, NC (United States); Chinese Academy of Sciences (CAS), Fuzhou (China); Shandong Univ., Jinan (China)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
OSTI Identifier:
1461661
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
ChemPhysChem
Additional Journal Information:
Journal Volume: 18; Journal Issue: 16; Journal ID: ISSN 1439-4235
Publisher:
ChemPubSoc Europe
Country of Publication:
United States
Language:
English
Subject:
ferromagnets; group bits; perovskites; quantum bits; spin–orbit coupling

Citation Formats

Gordon, Elijah E., Koo, Hyun-Joo, Deng, Shuiquan, Köhler, Jürgen, and Whangbo, Myung-Hwan. Group of Quantum Bits Acting as a Bit Using a Single-Domain Ferromagnet of Uniaxial Magnetic Ions. United States: N. p., 2017. Web. doi:10.1002/cphc.201700609.
Gordon, Elijah E., Koo, Hyun-Joo, Deng, Shuiquan, Köhler, Jürgen, & Whangbo, Myung-Hwan. Group of Quantum Bits Acting as a Bit Using a Single-Domain Ferromagnet of Uniaxial Magnetic Ions. United States. doi:10.1002/cphc.201700609.
Gordon, Elijah E., Koo, Hyun-Joo, Deng, Shuiquan, Köhler, Jürgen, and Whangbo, Myung-Hwan. Thu . "Group of Quantum Bits Acting as a Bit Using a Single-Domain Ferromagnet of Uniaxial Magnetic Ions". United States. doi:10.1002/cphc.201700609. https://www.osti.gov/servlets/purl/1461661.
@article{osti_1461661,
title = {Group of Quantum Bits Acting as a Bit Using a Single-Domain Ferromagnet of Uniaxial Magnetic Ions},
author = {Gordon, Elijah E. and Koo, Hyun-Joo and Deng, Shuiquan and Köhler, Jürgen and Whangbo, Myung-Hwan},
abstractNote = {Read/write operations with individual quantum bits (i.e., qbits) are a demanding concern to solve in quantum computing. To alleviate this difficulty, we considered the possibility of using a group of qbits that act collectively as a bit (hereafter, a group bit or a gbit, in short). A promising candidate for a gbit is a single-domain ferromagnet (SDF) independent of its size, which can be prepared as a magnet of well-separated uniaxial magnetic ions (UMIs) at sites of no electric dipole moment with their uniaxial axes aligned along one common direction. When magnetized, the UMIs of such a magnet have a ferromagnetic (FM) arrangement and the resulting SDF becomes a gbit with its two opposite moment orientations representing the |0⟩ and |1⟩ states of a bit. Here, we probed the requirements for such magnets and identified several 2H-perovskites as materials satisfying these requirements.},
doi = {10.1002/cphc.201700609},
journal = {ChemPhysChem},
number = 16,
volume = 18,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: Crystal structure of a 2H-perovskite A3MM'O6: a) Perspective view of a single MM'O6 chain aligned along the c-direction. b) Packing of the MM'O6 chains and A 2+ ions viewed along the chain direction. c) Two views of a M'O6 octahedron (above: a perspective view on top, below: amore » projection view along the c-direction). d) Two views of a MO6trigonal prism (above: a perspective view on top, below: a projection view along the c-direction).« less

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