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Title: Scaling considerations in ground state quantum computation

Abstract

We study design challenges associated with realizing a ground-state quantum computer. In such a computer, it is necessary that the energy gap between the ground state and first excited state be sufficiently large to prevent disruptive excitations. Here, an estimate of this gap is provided as a function of computer size. We then address the problem of detecting the output of a ground-state quantum computer. It is shown that the exponential detection difficulties that appear to be present at first can be overcome by small design changes.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Director, Office of Science. Office of Basic Energy Studies. Materials Science and Engineering Division; National Science Foundation (US)
OSTI Identifier:
805160
Report Number(s):
LBNL-51643
Journal ID: ISSN 1050-2947; PLRAAN; R&D Project: 506501; B& R KC0202030; TRN: US0301672
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Journal Article
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 65; Journal Issue: 2; Other Information: Journal Publication Date: February 2002; PBD: 31 Aug 1999; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPUTERS; DESIGN; DETECTION; ENERGY GAP; EXCITED STATES; GROUND STATES

Citation Formats

Mizel, Ari, Mitchell, M.W., and Cohen, Marvin L. Scaling considerations in ground state quantum computation. United States: N. p., 1999. Web.
Mizel, Ari, Mitchell, M.W., & Cohen, Marvin L. Scaling considerations in ground state quantum computation. United States.
Mizel, Ari, Mitchell, M.W., and Cohen, Marvin L. Tue . "Scaling considerations in ground state quantum computation". United States.
@article{osti_805160,
title = {Scaling considerations in ground state quantum computation},
author = {Mizel, Ari and Mitchell, M.W. and Cohen, Marvin L.},
abstractNote = {We study design challenges associated with realizing a ground-state quantum computer. In such a computer, it is necessary that the energy gap between the ground state and first excited state be sufficiently large to prevent disruptive excitations. Here, an estimate of this gap is provided as a function of computer size. We then address the problem of detecting the output of a ground-state quantum computer. It is shown that the exponential detection difficulties that appear to be present at first can be overcome by small design changes.},
doi = {},
journal = {Physical Review A},
issn = {1050-2947},
number = 2,
volume = 65,
place = {United States},
year = {1999},
month = {8}
}