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Conference Paper: Measuring time-energy resources for quantum processes

TitleMeasuring time-energy resources for quantum processes
Authors
KeywordsQuantum process
Time-energy measure
Time-energy uncertainty relation
Issue Date2013
Citation
The 13th Asian Conference on Quantum Information Science (AQIS'13), Chennai, India, 25-30 August 2013. How to Cite?
AbstractThe speed of any quantum process is limited by quantum mechanics via time-energy uncertainty relations and they imply that time and energy are tradeoff with each other. As such, we propose to measure the time-energy as a single unit for quantum channels. We consider a time-energy measure for quantum channels and compute lower and upper bounds of it using the channel Kraus operators. For a special class of channels (which includes the depolarizing channel), we obtain the exact value of the time-energy measure. Our result can be used to compare the time-energy resources of similar quantum processes. In particular, we show that erasing quantum information requires √(n + 1)/n) times more time-energy resource than erasing classical information, where n is the system dimension. This work is published in [1].
DescriptionParallel Session B
Persistent Identifierhttp://hdl.handle.net/10722/190222

 

DC FieldValueLanguage
dc.contributor.authorFung, FCHen_US
dc.contributor.authorChau, HFen_US
dc.date.accessioned2013-09-17T15:15:24Z-
dc.date.available2013-09-17T15:15:24Z-
dc.date.issued2013en_US
dc.identifier.citationThe 13th Asian Conference on Quantum Information Science (AQIS'13), Chennai, India, 25-30 August 2013.en_US
dc.identifier.urihttp://hdl.handle.net/10722/190222-
dc.descriptionParallel Session B-
dc.description.abstractThe speed of any quantum process is limited by quantum mechanics via time-energy uncertainty relations and they imply that time and energy are tradeoff with each other. As such, we propose to measure the time-energy as a single unit for quantum channels. We consider a time-energy measure for quantum channels and compute lower and upper bounds of it using the channel Kraus operators. For a special class of channels (which includes the depolarizing channel), we obtain the exact value of the time-energy measure. Our result can be used to compare the time-energy resources of similar quantum processes. In particular, we show that erasing quantum information requires √(n + 1)/n) times more time-energy resource than erasing classical information, where n is the system dimension. This work is published in [1].-
dc.languageengen_US
dc.relation.ispartof13th Asian Conference on Quantum Information Science, AQIS'13en_US
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectQuantum process-
dc.subjectTime-energy measure-
dc.subjectTime-energy uncertainty relation-
dc.titleMeasuring time-energy resources for quantum processesen_US
dc.typeConference_Paperen_US
dc.identifier.emailFung, FCH: chffung@hku.hken_US
dc.identifier.emailChau, HF: hfchau@hku.hken_US
dc.identifier.authorityChau, HF=rp00669en_US
dc.description.naturepostprint-
dc.identifier.hkuros223656en_US
dc.customcontrol.immutablesml 131118-

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