NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Demonstration of a Fundamental Universal Quantum Logic Gate

Published

Author(s)

C Monroe, D M. Meekhof, B E. King, Wayne M. Itano, David J. Wineland

Abstract

We demonstrate the operation of a two-bit "controlled-NOT" quantum logic gate, which, in conjunction with simple single-bit operations, forms a universal quantum logic gate for quantum computation. The two quantum bits are stored in the internal and external degrees of freedom of a single trapped atom, which is first laser cooled to the zero-point energy. Decoherence effects are identified for the operation, and the possibility of extending the system to more qubits appears promising.
Citation
Physical Review Letters
Volume
75
Pub Type
Journals

Download Paper

Local Download

Citation

Monroe, C. , Meekhof, D. , King, B. , Itano, W. and Wineland, D. (1995), Demonstration of a Fundamental Universal Quantum Logic Gate, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=105032 (Accessed October 10, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created December 31, 1994, Updated October 12, 2021
Was this page helpful?