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Conference Paper: Measuring time-energy resources for quantum processes
Title | Measuring time-energy resources for quantum processes |
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Authors | |
Keywords | Quantum process Time-energy measure Time-energy uncertainty relation |
Issue Date | 2013 |
Citation | The 13th Asian Conference on Quantum Information Science (AQIS'13), Chennai, India, 25-30 August 2013. How to Cite? |
Abstract | The 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]. |
Description | Parallel Session B |
Persistent Identifier | http://hdl.handle.net/10722/190222 |
DC Field | Value | Language |
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dc.contributor.author | Fung, FCH | en_US |
dc.contributor.author | Chau, HF | en_US |
dc.date.accessioned | 2013-09-17T15:15:24Z | - |
dc.date.available | 2013-09-17T15:15:24Z | - |
dc.date.issued | 2013 | en_US |
dc.identifier.citation | The 13th Asian Conference on Quantum Information Science (AQIS'13), Chennai, India, 25-30 August 2013. | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/190222 | - |
dc.description | Parallel Session B | - |
dc.description.abstract | The 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.language | eng | en_US |
dc.relation.ispartof | 13th Asian Conference on Quantum Information Science, AQIS'13 | en_US |
dc.subject | Quantum process | - |
dc.subject | Time-energy measure | - |
dc.subject | Time-energy uncertainty relation | - |
dc.title | Measuring time-energy resources for quantum processes | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Fung, FCH: chffung@hku.hk | en_US |
dc.identifier.email | Chau, HF: hfchau@hku.hk | en_US |
dc.identifier.authority | Chau, HF=rp00669 | en_US |
dc.description.nature | postprint | - |
dc.identifier.hkuros | 223656 | en_US |
dc.customcontrol.immutable | sml 131118 | - |