Verifying multipartite entangled Greenberger-Horne-Zeilinger states via multiple quantum coherences

被引：96

作者：

Wei, Ken X. ^{[1
]}

Lauer, Isaac ^{[1
]}

Srinivasan, Srikanth ^{[1
]}

Sundaresan, Neereja ^{[1
]}

McClure, Douglas T. ^{[1
]}

Toyli, David ^{[1
]}

McKay, David C. ^{[1
]}

Gambetta, Jay M. ^{[1
]}

Sheldon, Sarah ^{[1
]}

机构：

[1] IBM TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA

来源：

PHYSICAL REVIEW A | 2020年 / 101卷 / 03期

关键词：

SCHRODINGER CAT STATES; GENERATION;

D O I：

10.1103/PhysRevA.101.032343

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The ability to generate and verify multipartite entanglement is an important benchmark for near-term quantum devices. We develop a scalable entanglement metric based on multiple quantum coherences and demonstrate experimentally on a 20-qubit superconducting device. We report a state fidelity of 0.5165 +/- 0.0036 for an 18-qubit GHZ state, indicating multipartite entanglement across all 18 qubits. Our entanglement metric is robust to noise and only requires measuring the population in the ground state; it can be readily applied to other quantum devices to verify multipartite entanglement.

引用

页数：10

共 50 条

[41] Preparation of Greenberger-Horne-Zeilinger entangled states with multiple superconducting quantum-interference device qubits or atoms in cavity QED
Yang, CP
Han, SY
PHYSICAL REVIEW A, 2004, 70 (06): : 062323 - 1
[42] Polytope structures for Greenberger-Horne-Zeilinger diagonal states *
Han, Kyung Hoon
Kye, Seung-Hyeok
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021, 54 (45)
[43] Photonic Source of Heralded Greenberger-Horne-Zeilinger States
Cao, H.
Hansen, L. M.
Giorgino, F.
Carosini, L.
Zahalka, P.
Zilk, F.
Loredo, J. C.
Walther, P.
PHYSICAL REVIEW LETTERS, 2024, 132 (13)
[44] Distinguishment of Greenberger-Horne-Zeilinger States in Rydberg Atoms via Noncyclic Geometric Quantum Computation
Guo, Fu-Qiang
Zhu, Xiao-Yu
Yan, Lei-Lei
Feng, Mang
Su, Shi-Lei
ANNALEN DER PHYSIK, 2021, 533 (07)
[45] Hardy's theorem for Greenberger-Horne-Zeilinger states
Wu, XH
Zong, HS
Pang, HR
PHYSICS LETTERS A, 2000, 276 (5-6) : 221 - 224
[46] Distillation of Greenberger-Horne-Zeilinger States by Combinatorial Methods
Vrana, Peter
Christandl, Matthias
IEEE TRANSACTIONS ON INFORMATION THEORY, 2019, 65 (09) : 5945 - 5958
[47] Generation of Greenberger-Horne-Zeilinger entangled states of photons in multiple cavities via a superconducting qutrit or an atom through resonant interaction
Yang, Chui-Ping
Su, Qi-Ping
Han, Siyuan
PHYSICAL REVIEW A, 2012, 86 (02):
[48] Conditions for monogamy of quantum correlations: Greenberger-Horne-Zeilinger versus W states
Prabhu, R.
Pati, Arun Kumar
Sen , Aditi
Sen, Ujjwal
PHYSICAL REVIEW A, 2012, 85 (04):
[49] Greenberger-Horne-Zeilinger states: Their identifications and robust violations
Fan, Xing-Yan
Zhou, Jie
Meng, Hui-Xian
Wu, Chunfeng
Pati, Arun Kumar
Chen, Jing-Ling
MODERN PHYSICS LETTERS A, 2021, 36 (31)
[50] Precise detection of multipartite entanglement in four-qubit Greenberger-Horne-Zeilinger diagonal states
Chen, Xiao-Yu
Jiang, Li-Zhen
Xu, Zhu-An
FRONTIERS OF PHYSICS, 2018, 13 (05)

← 1 2 3 4 5 →