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.

Search Publications by: David J. Wineland (Assoc)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 276 - 300 of 482

Time Measurement at the Millennium

March 1, 2001
Author(s)
James C. Bergquist, Steven R. Jefferts, David J. Wineland
The latest clocks use a single ion to measure time with an anticipated precision of on part in 10 18

A Single 199 Hg + Ion Optical Clock

January 1, 2001
Author(s)
James C. Bergquist, Christopher W. Oates, E A. Curtis, Leo W. Hollberg, Robert E. Drullinger, Wayne M. Itano, David J. Wineland, T Udem

Decoherence-Free Quantum Memory Using Trapped Ions

January 1, 2001
Author(s)
D Kielpinski, V Meyer, M A. Rowe, C A. Sackett, Wayne M. Itano, C Monroe, David J. Wineland
We demonstrate a decoherence-free quantum memory of one qubit. By encoding the qubit into the decoherence-free subspace (DFS) of a pair of trapped 9Be+ ions, we protect the qubit from environment-induced dephasing that limits the storage time of a qubit

Experimental Violation of Bell's Inequalities with Efficient Detection

January 1, 2001
Author(s)
M A. Rowe, D Kielpinski, V Meyer, C A. Sackett, Wayne M. Itano, C Monroe, David J. Wineland
Local realism is the idea that objects have definite properties whether or not they are measured, and that measurements of these properties are not affected by events taking place sufficiently far away. Einstein, Podolsky and Rosen used these reasonable

Primary Atomic Frequency Standards at NIST

January 1, 2001
Author(s)
Donald Sullivan, James C. Bergquist, Robert E. Drullinger, Wayne M. Itano, Steven R. Jefferts, D W. Lee, D Meekhof, Thomas E. Parker, F L. Walls, David J. Wineland

Recent Results in Trapped-Ion Quantum Computing at NIST,

January 1, 2001
Author(s)
D Kielpinski, A Ben-kish, Joseph W. Britton, V Meyer, M A. Rowe, C A. Sackett, Wayne M. Itano, C Monroe, David J. Wineland
We review recent experiments on entanglement, Bell's inequality, and decoherence-free subspaces in a quantum register of trapped 9Be+ ions.

Decoherence of Quantum Superpositions Through Coupling to Engineering Reservoirs

January 1, 2000
Author(s)
C J. Myatt, B E. King, Q A. Turchette, C A. Sackett, D Kielpinski, Wayne M. Itano, W M. Monroe, David J. Wineland
The theory of quantum mechanics applies to closed systems. In such ideal situations, a single atom can, for example, exist simultaneously in a superposition of two different spatial locations. In contrast, real systems always interact with their

Entanglement of Four Particles

January 1, 2000
Author(s)
C A. Sackett, D Kielpinski, B E. King, Christopher Langer, V Meyer, C J. Myatt, M A. Rowe, Q A. Turchette, Wayne M. Itano, David J. Wineland, C Monroe
Quantum mechanics allows for many-particle wavefunctions that cannot be factorized into a product of single-particle wavefunctions, even when the constituent particles are entirely distinct. Such ‘entangled’ states explicitly demonstrate the non-local