From quantum speed limits to energy-efficient quantum gates
While recent breakthroughs in quantum computing promise the nascence of the quantum information age, quantum states remain delicate to control. Moreover, the required energy budget for large scale quantum applications has only sparely been considered. Addressing either of these issues necessitates a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac6821 |
| _version_ | 1827871196165701632 |
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| author | Maxwell Aifer Sebastian Deffner |
| author_facet | Maxwell Aifer Sebastian Deffner |
| author_sort | Maxwell Aifer |
| collection | DOAJ |
| description | While recent breakthroughs in quantum computing promise the nascence of the quantum information age, quantum states remain delicate to control. Moreover, the required energy budget for large scale quantum applications has only sparely been considered. Addressing either of these issues necessitates a careful study of the most energetically efficient implementation of elementary quantum operations. In the present analysis, we show that this optimal control problem can be solved within the powerful framework of quantum speed limits. To this end, we derive state-independent lower bounds on the energetic cost, from which we find the universally optimal implementation of unitary quantum gates, for both single and N -qubit operations. |
| first_indexed | 2024-03-12T16:06:11Z |
| format | Article |
| id | doaj.art-0900918280744779928b3c932ec74e41 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:06:11Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0900918280744779928b3c932ec74e412023-08-09T14:19:48ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124505500210.1088/1367-2630/ac6821From quantum speed limits to energy-efficient quantum gatesMaxwell Aifer0https://orcid.org/0000-0003-1936-0877Sebastian Deffner1https://orcid.org/0000-0003-0504-6932Department of Physics, University of Maryland , Baltimore County, Baltimore, MD 21250, United States of AmericaDepartment of Physics, University of Maryland , Baltimore County, Baltimore, MD 21250, United States of America; Instituto de Física ‘Gleb Wataghin’, Universidade Estadual de Campinas , 13083-859, Campinas, São Paulo, BrazilWhile recent breakthroughs in quantum computing promise the nascence of the quantum information age, quantum states remain delicate to control. Moreover, the required energy budget for large scale quantum applications has only sparely been considered. Addressing either of these issues necessitates a careful study of the most energetically efficient implementation of elementary quantum operations. In the present analysis, we show that this optimal control problem can be solved within the powerful framework of quantum speed limits. To this end, we derive state-independent lower bounds on the energetic cost, from which we find the universally optimal implementation of unitary quantum gates, for both single and N -qubit operations.https://doi.org/10.1088/1367-2630/ac6821quantum controlquantum speed limitquantum computingquantum informationquantum thermodynamics |
| spellingShingle | Maxwell Aifer Sebastian Deffner From quantum speed limits to energy-efficient quantum gates New Journal of Physics quantum control quantum speed limit quantum computing quantum information quantum thermodynamics |
| title | From quantum speed limits to energy-efficient quantum gates |
| title_full | From quantum speed limits to energy-efficient quantum gates |
| title_fullStr | From quantum speed limits to energy-efficient quantum gates |
| title_full_unstemmed | From quantum speed limits to energy-efficient quantum gates |
| title_short | From quantum speed limits to energy-efficient quantum gates |
| title_sort | from quantum speed limits to energy efficient quantum gates |
| topic | quantum control quantum speed limit quantum computing quantum information quantum thermodynamics |
| url | https://doi.org/10.1088/1367-2630/ac6821 |
| work_keys_str_mv | AT maxwellaifer fromquantumspeedlimitstoenergyefficientquantumgates AT sebastiandeffner fromquantumspeedlimitstoenergyefficientquantumgates |