Title | Experimental measurement of bipartite entanglement using parameterized quantum circuits |
Author | |
Corresponding Author | Lu, Dawei; Xin, Tao |
Joint first author | Xue, Shunzhong; Huang, Yulei |
Publication Years | 2022-08-01
|
DOI | |
Source Title | |
ISSN | 1674-7348
|
EISSN | 1869-1927
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Volume | 65Issue:8 |
Abstract | Entanglement in quantum systems plays a crucial role in various quantum information tasks. Measuring entanglement has been an important issue in both experiments and theories. In this work, we use parameterized quantum circuits (PQCs) to diagonalize density matrices of quantum states and obtain entanglement by only measuring the diagonal elements. With this method, full quantum state tomography can be bypassed, greatly reducing the number of measurements. A comprehensive characterization of entanglement was performed by using Renyi entropy and partially transposed moments. Mutual information, calculated from entropy is also used to characterize dynamical quantum phase transitions. We experimentally demonstrated the method on a four-qubit nuclear magnetic resonance quantum simulator. Our results agree with the theoretical descriptions. The measurement complexity of our PQC-based method grows linearly with the number of diagonal elements in the density matrix, a square root reduction over the full quantum tomography. The proposed method can have great potential in quantum systems with a large number of particles. |
Keywords | |
URL | [Source Record] |
Indexed By | |
Language | English
|
SUSTech Authorship | Corresponding
|
Funding Project | National Key Research and Development Program of China[
|
WOS Research Area | Physics
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WOS Subject | Physics, Multidisciplinary
|
WOS Accession No | WOS:000812513100002
|
Publisher | |
EI Accession Number | 20222512248707
|
EI Keywords | Entropy
; Matrix Algebra
; Phase Transitions
; Quantum Entanglement
; Quantum Optics
; Tomography
|
ESI Classification Code | Thermodynamics:641.1
; Pulse Circuits:713.4
; Light/Optics:741.1
; Imaging Techniques:746
; Physical Chemistry:801.4
; Algebra:921.1
; Quantum Theory
; Quantum Mechanics:931.4
|
Data Source | Web of Science
|
Citation statistics |
Cited Times [WOS]:0
|
Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/343285 |
Department | Institute for Quantum Science and Engineering 理学院_物理系 |
Affiliation | 1.Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China 3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China 4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 5.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China 6.Zhejiang Lab, Res Ctr Quantum Sensing, Hangzhou 311121, Peoples R China 7.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 8.Beijing Natl Res Ctr Informat Sci & Technol, Beijing 100084, Peoples R China 9.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China |
First Author Affilication | Institute for Quantum Science and Engineering; Department of Physics |
Corresponding Author Affilication | Institute for Quantum Science and Engineering; Department of Physics |
Recommended Citation GB/T 7714 |
Xue, Shunzhong,Huang, Yulei,Zhao, Dafa,et al. Experimental measurement of bipartite entanglement using parameterized quantum circuits[J]. Science China-Physics Mechanics & Astronomy,2022,65(8).
|
APA |
Xue, Shunzhong.,Huang, Yulei.,Zhao, Dafa.,Wei, Chao.,Li, Jun.,...&Long, Gui-Lu.(2022).Experimental measurement of bipartite entanglement using parameterized quantum circuits.Science China-Physics Mechanics & Astronomy,65(8).
|
MLA |
Xue, Shunzhong,et al."Experimental measurement of bipartite entanglement using parameterized quantum circuits".Science China-Physics Mechanics & Astronomy 65.8(2022).
|
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