Please use this identifier to cite or link to this item:
Title: Impossibility of achieving Landauer’s bound for almost every quantum state
Authors: Riechers, Paul M.
Gu, Mile
Keywords: Science::Physics
Issue Date: 2021
Source: Riechers, P. M. & Gu, M. (2021). Impossibility of achieving Landauer’s bound for almost every quantum state. Physical Review A, 104(1), 012214-.
Project: RG146/20
Journal: Physical Review A
Abstract: The thermodynamic cost of resetting an arbitrary initial state to a particular desired state is lower bounded by Landauer's bound. However, here we demonstrate that this lower bound is necessarily unachievable for nearly every initial state, for any reliable reset mechanism. Since local heating threatens rapid decoherence, this issue is of substantial importance beyond mere energy efficiency. For the case of qubit reset, we find the minimally dissipative state analytically for any reliable reset protocol, in terms of the entropy-flow vector introduced here. This allows us to verify a recent theorem about initial-state dependence of entropy production for any finite-time transformation, as it pertains to quantum state preparation.
ISSN: 2469-9926
DOI: 10.1103/PhysRevA.104.012214
Schools: School of Physical and Mathematical Sciences 
Organisations: National University of Singapore
Research Centres: Complexity Institute 
Rights: © 2021 The Author(s). Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
PhysRevA.104.012214.pdf1.24 MBAdobe PDFThumbnail

Citations 50

Updated on May 25, 2023

Web of ScienceTM
Citations 50

Updated on May 28, 2023

Page view(s)

Updated on Jun 1, 2023


Updated on Jun 1, 2023

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.