Hamiltonian simulation with optimal sample complexity

Quantum Software from Quantum States One of the hallmarks of quantum computation is the storage and extraction of information within quantum systems. Recently, Lloyd, Mohseni and Rebentrost created a protocol to treat multiple identical copies of a quantum state as “quantum software”, specifying a q...

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Main Authors: Shelby Kimmel, Cedric Yen-Yu Lin, Guang Hao Low, Maris Ozols, Theodore J. Yoder
Format: Article
Language:English
Published: Nature Portfolio 2017-03-01
Series:npj Quantum Information
Online Access:https://doi.org/10.1038/s41534-017-0013-7
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author Shelby Kimmel
Cedric Yen-Yu Lin
Guang Hao Low
Maris Ozols
Theodore J. Yoder
author_facet Shelby Kimmel
Cedric Yen-Yu Lin
Guang Hao Low
Maris Ozols
Theodore J. Yoder
author_sort Shelby Kimmel
collection DOAJ
description Quantum Software from Quantum States One of the hallmarks of quantum computation is the storage and extraction of information within quantum systems. Recently, Lloyd, Mohseni and Rebentrost created a protocol to treat multiple identical copies of a quantum state as “quantum software”, specifying a quantum program to be run on any other state. They use this approach to do principal component analysis of the software state. Here, we expand on their results, providing protocols for running more-complex quantum programs specified by several different states. Our protocols can be used to analyze the relationship between different states (for example, deciding whether states are orthogonal) and to create new states (such as coherent linear combinations of two states). We also outline the optimality of Lloyd et al.’s original protocol, as well as our new protocols.
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spelling doaj.art-991483e91eb14e1bb598a6138ba664852022-12-21T21:53:17ZengNature Portfolionpj Quantum Information2056-63872017-03-01311710.1038/s41534-017-0013-7Hamiltonian simulation with optimal sample complexityShelby Kimmel0Cedric Yen-Yu Lin1Guang Hao Low2Maris Ozols3Theodore J. Yoder4Joint Center for Quantum Information and Computer Science (QuICS), University of MarylandJoint Center for Quantum Information and Computer Science (QuICS), University of MarylandDepartment of Physics, Massachusetts Institute of TechnologyDepartment of Applied Mathematics and Theoretical Physics, University of CambridgeDepartment of Physics, Massachusetts Institute of TechnologyQuantum Software from Quantum States One of the hallmarks of quantum computation is the storage and extraction of information within quantum systems. Recently, Lloyd, Mohseni and Rebentrost created a protocol to treat multiple identical copies of a quantum state as “quantum software”, specifying a quantum program to be run on any other state. They use this approach to do principal component analysis of the software state. Here, we expand on their results, providing protocols for running more-complex quantum programs specified by several different states. Our protocols can be used to analyze the relationship between different states (for example, deciding whether states are orthogonal) and to create new states (such as coherent linear combinations of two states). We also outline the optimality of Lloyd et al.’s original protocol, as well as our new protocols.https://doi.org/10.1038/s41534-017-0013-7
spellingShingle Shelby Kimmel
Cedric Yen-Yu Lin
Guang Hao Low
Maris Ozols
Theodore J. Yoder
Hamiltonian simulation with optimal sample complexity
npj Quantum Information
title Hamiltonian simulation with optimal sample complexity
title_full Hamiltonian simulation with optimal sample complexity
title_fullStr Hamiltonian simulation with optimal sample complexity
title_full_unstemmed Hamiltonian simulation with optimal sample complexity
title_short Hamiltonian simulation with optimal sample complexity
title_sort hamiltonian simulation with optimal sample complexity
url https://doi.org/10.1038/s41534-017-0013-7
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