Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Search Publications by Dietrich Leibfried

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 1 - 25 of 109

Quantum-enhanced sensing of a mechanical oscillator

Author(s)
Katherine C. McCormick, Jonas Keller, Shaun C. Burd, David J. Wineland, Andrew C. Wilson, Dietrich G. Leibfried
The use of special quantum states in interferometry with bosons to achieve sensitivities below the limits established by classical-like coherent dates back

Quantum amplification of motion of a mechanical oscillator

Author(s)
Shaun C. Burd, Raghavendra Srinivas, John J. Bollinger, Andrew C. Wilson, David J. Wineland, Dietrich G. Leibfried, Daniel H. Slichter, David T. Allcock
Detection of the weakest forces in nature and the search for new physics demand increasingly sensitive measurements of the motion of mechanical oscillators

Quantum gate teleportation between separated zones of a trapped-ion processor

Author(s)
Yong Wan, Daniel Kienzler, Stephen D. Erickson, Karl H. Mayer, Ting R. Tan, Jenny J. Wu, Hilma H. Macedo De Vasconcelos, Scott C. Glancy, Emanuel H. Knill, David J. Wineland, Andrew C. Wilson, Dietrich G. Leibfried
Large-scale quantum computers will inevitably require quantum gate operations between widely separated qubits, even within a single quantum information

Versatile laser-free trapped-ion entangling gates

Author(s)
R. T. Sutherland, Raghavendra Srinivas, Shaun C. Burd, Dietrich G. Leibfried, Andrew C. Wilson, David J. Wineland, David T. Allcock, Daniel H. Slichter, S. B. Libby
We present a general theory for laser-free entangling gates with trapped-ion hyperfine qubits, using either static or oscillating magnetic-field gradients

Chained Bell inequality experiment with high-efficiency measurements

Author(s)
Ting Rei Tan, Stephen D. Erickson, Peter L. Bierhorst, Daniel Kienzler, Scott C. Glancy, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland, Yong Wan
We report correlation measurements on two 9Be+ ions that violate a chained Bell inequality obeyed by any local-realistic theory. The correlations can be modeled

VECSEL systems for generation and manipulation of trapped magnesium ions

Author(s)
Shaun C. Burd, David T. Allcock, Tomi Leinonen, Jussi-Pekka Penttinen, Daniel H. Slichter, Raghavendra Srinivas, Andrew C. Wilson, Robert Jordens, Micrea Guina, Dietrich G. Leibfried, David J. Wineland
Experiments in atomic, molecular, and optical (AMO) physics rely on lasers at many different wave- lengths and with varying requirements on spectral linewidth

Preparation of entangled states through Hilbert space engineering

Author(s)
Yiheng Lin, John P. Gaebler, Florentin Reiter, Ting Rei Tan, Ryan S. Bowler, Yong Wan, Adam C. Keith, Emanuel H. Knill, Kevin J. Coakley, Dietrich G. Leibfried, David J. Wineland, Scott C. Glancy
Entangled states are a crucial resource for quantum-based technologies such as quantum computers and quantum communication systems. Exploring new methods for

High Fidelity Universal Gate Set for 9Be+ Ion Qubits

Author(s)
John P. Gaebler, Ting Rei Tan, Yong Wan, Yiheng Lin, Ryan S. Bowler, Adam C. Keith, Scott C. Glancy, Kevin J. Coakley, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland
We report high-fidelity laser-beam-induced quantum logic gates on qubits comprised of hyperfine states in 9Be+ ions, achieved in part through a combination of

Single-frequency 571 nm VECSEL for photoionization of magnesium

Author(s)
Shaun C. Burd, Tomi Leinonen, Jussi-Pekka Penttinen, David T. Allcock, Daniel H. Slichter, Raghavendra Srinivas, Andrew C. Wilson, Micrea Guina, Dietrich G. Leibfried
We report the development of an intracavity-frequency-doubled VECSEL emitting at 571 nm for photoionization of magnesium. The laser employs a V-cavity geometry

Multi-element logic gates for trapped-ion qubits

Author(s)
Ting Rei Tan, John P. Gaebler, Yiheng Lin, Yong Wan, Ryan S. Bowler, Dietrich G. Leibfried, David J. Wineland
Precision control over hybrid physical systems at the quantum level is of general importance in physics. For trapped-ions, a hybrid system formed of different

Fast transport of mixed-species ion chains within a Paul trap

Author(s)
Ryan S. Bowler, M. Palmer, John P. Gaebler, Dietrich G. Leibfried, J. G. Ceremuga
We investigate the dynamics of mixed-species ion crystals during transport between spatially distinct locations in a linear Paul trap in the diabatic regime. In

Single-Mode Optical Fiber For High-Power, Low-Loss UV Transmission

Author(s)
Daniel H. Slichter, Yves Colombe, Andrew C. Wilson, Dietrich G. Leibfried, David J. Wineland
We report large-mode-area solid-core photonic crystal fibers made from fused silica which resist UV solarization even at relatively high optical powers. Using a

Dissipative production of a maximally entangled steady state of two quantum bits

Author(s)
John P. Gaebler, Yiheng Lin, Florentin Reiter, Ting Rei Tan, Ryan S. Bowler, Anders Sorensen, Dietrich G. Leibfried, David J. Wineland
Entangled states are a key resource in fundamental quantum physics, quantum cryptography, and quantum computation [1]. To date, controlled unitary interactions

Surface science for improved ion traps

Author(s)
David P. Pappas, Dustin A. Hite, Andrew C. Wilson, David T. Allcock, David J. Wineland, Dietrich G. Leibfried, Yves Colombe
Trapped ions are sensitive to electric-field noise from trap-electrode surfaces. This noise has been an obstacle to progress in trapped-ion quantum information

Micro-fabricated stylus ion trap

Author(s)
Kyle S. McKay, Christian L. Arrington, Ehren D. Baca, Jonathan J. Coleman, Yves Colombe, Patrick Finnegan, Dustin A. Hite, Andrew E. Hollowell, Robert Jordens, John D. Jost, Dietrich G. Leibfried, Adam M. Rowen, Ulrich J. Warring, David J. Wineland, David P. Pappas, Andrew C. Wilson
An electroformed, three-dimensional stylus Paul trap was designed to confine a single atomic ion for use as a sensor to probe the electric-field noise of