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

Superradiance as a source of collective decoherence in quantum computers

Not Accessible

Your library or personal account may give you access

Abstract

We analyze the radiative coupling of qubits to a common radiation bath in free space and discuss that superradiance (collective emission) results in decoherence that scales with the square of the number of qubits. This decoherence mechanism is nonlocal; the collective emission simultaneously decoheres all the qubits in the computer. Because the noise source is not local, the introduced errors are outside the applicability of the threshold theorem. As a result, we argue that the errors due to superradiance cannot be corrected using the current models of fault-tolerant quantum computation.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Algorithm-based analysis of collective decoherence in quantum computation

Shoko Utsunomiya, Cyrus P. Master, and Yoshihisa Yamamoto
J. Opt. Soc. Am. B 24(2) 198-208 (2007)

Multi-qubit quantum phase gates based on surface plasmons of a nanosphere

Jun Ren, Jun Yuan, and Xiangdong Zhang
J. Opt. Soc. Am. B 31(2) 229-236 (2014)

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)

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

Equations (26)

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