Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Measuring two-qubit gates

Not Accessible

Your library or personal account may give you access

Abstract

Accurate characterization of two-qubit gates will be critical for any realization of quantum computation. We discuss a range of measurements for characterizing two-qubit gates. These measures are architecture-independent and span a range of complexity from simple measurement routines to full quantum-state and process tomography. Simple indicative measures, which flag but do not quantify gate operation in the quantum regime, include the fringe visibility, parity, Bell-state fidelity, and entanglement witnesses. Quantitative measures of gate output states include linear entropy and tangle; measures of, and error bounds to, whole-gate operation are provided by metrics such as process fidelity, process distance, and average gate fidelity. We discuss which measures are appropriate, given the stage of development of the gate, and highlight connections between them.

© 2007 Optical Society of America

Full Article  |  PDF Article
More Like This
Revisiting comparison between entanglement measures for two-qubit pure states

Ashutosh Singh, Ijaz Ahamed, Dipankar Home, and Urbasi Sinha
J. Opt. Soc. Am. B 37(1) 157-166 (2020)

Logic-qubit controlled-NOT gate of decoherence-free subspace with nonlinear quantum optics

Chun-Yan Li, Zu-Rong Zhang, Shi-Hai Sun, Mu-Sheng Jiang, and Lin-Mei Liang
J. Opt. Soc. Am. B 30(7) 1872-1877 (2013)

Influence of the interaction geometry on the fidelity of the two-qubit Rydberg blockade gate

I. Vybornyi, L. V. Gerasimov, D. V. Kupriyanov, S. S. Straupe, and K. S. Tikhonov
J. Opt. Soc. Am. B 41(1) 134-142 (2024)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (4)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (52)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved