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Search Publications

NIST Authors in Bold

Displaying 126 - 150 of 9846

The Impossibility of Efficient Quantum Weak Coin-Flipping

June 22, 2020
Author(s)
Carl A. Miller
… carry out a fair coin flip, using only a noiseless quantum channel? This problem (quantum weak coin-flipping) was formalized more than 15 years … despite some phenomenal theoretical progress, practical quantum coin-flipping protocols with vanishing bias have … quantum cryptography, randomness, complex analysis …

Asymptotically Optimal Quantum Circuits for d-level Systems

June 17, 2005
Author(s)
Stephen Bullock, Dianne M. O'Leary, G K. Brennen
… is a -level system whose state space is spanned by , , . Quantum computation has stimulated much recent interest in … We further construct a decomposition for multi-level quantum logics, proving a sharp asymptoticof two-qudit gates … quantum computation, quantum gate, quantum multi-level logic, …

Connecting the Discrete and Continuous-Time Quantum Walks

October 16, 2008
Author(s)
Frederick Strauch
… random walks have been explored as effective elements for quantum algorithms. In the simplest case of one dimension, … the theory has remained divided into the discrete-time quantum walk and the continuous-time quantum walk. Though the properties of these two walks have …

Educating Next-Gen Computer Scientists

January 31, 2018
Author(s)
Jeff Voas, D. Richard Kuhn, Celia Paulsen, Kim B. Schaffer
… design, compiler design, and programming languages were computer science (CS) education's core ingredients in past years. Then, universities led the computer technology revolution by producing the inventors for … question that we pose in this roundtable is: Is university computer science education leading technology forward or are …

Quantum Computing with Realistically Noisy Devices

October 1, 2005
Author(s)
Emanuel H. Knill
… problems. One of the main problems of experimental quantum computing is to preserve fragile quantum states in … Quantum Computing with Realistically Noisy Devices …

Framework for learning agents in quantum environments

September 22, 2016
Author(s)
Jacob M. Taylor, Hans Briegel, Vedran Dunjko
… broad framework for describing learning agents in general quantum environments. We analyze the types of environments which allow for quantum enhancements in learning, by contrasting environments to quantum oracles. We show that whether or not quantum … Quantum Computation, Machine Learning, Quantum Information …

Quantum Chemistry

March 1, 2001
Author(s)
Carlos A. Gonzalez
… In this short essay, the current status of quantum chemistry as well as the future challenges this … computational chemistry, quantum chemistry, quantum mechanics … Quantum Chemistry …

Feasibility study of quantum computing using trapped electrons

February 15, 2022
Author(s)
Qian Yu, Alberto Alonso, Jackie Caminiti, Robert Sutherland, Dietrich Leibfried, Kayla Rodriguez, Madhav Dhital, Boerge Hemmerling, Hartmut Haeffner, Kristin Beck
… Feasibility study of quantum computing using trapped electrons …

Time-Resolving Quantum Measurement Enables Energy-Efficient, Large-Alphabet Communication

September 21, 2020
Author(s)
Ivan Burenkov, Jabir Marakkarakath Vadakkepurayil, Abdella Battou, Sergey Polyakov
… requires a measurement of physical states. Because quantum measurements enable accuracy beyond the classical … develop measurement tools and applications. In particular, quantum-measurement-enhanced strategies are used for the … limits of the underlying physical systems. However, quantum-enhanced discrimination strategies demonstrated to …

Entanglement Routing in Quantum Networks: A Comprehensive Survey

February 11, 2025
Author(s)
Amar Abane, Michael Cubeddu, Van Sy Mai, Abdella Battou
… Entanglement routing in near-term quantum networks consists of choosing the optimal sequence of … end-to-end entanglement between two distant nodes on a quantum network. Similar to traditional routing technologies, a quantum routing protocol uses network information to choose …

Implications of quantum information for measurement and standards

April 29, 2004
Author(s)
David J. Wineland
… is a high level review of technical and policy issues in quantum information. … quantum communications, quantum computing, quantum information … Implications of quantum information for measurement and standards …

A Quantum Algorithm Detecting Concentrated Maps

November 1, 2007
Author(s)
Isabel M. Beichl, Stephen Bullock, David Song
… We consider an arbitrary mapping for , some number of quantum bits. Using calls to a classical oracle evaluating … iff for some fixed and any . This manuscript presents a quantum algorithm that distinguishes a -concentrated from a one-to-one in calls to a quantum oracle function with high probability. For rad., the …

Quantum Control, Quantum Information Processing, and Quantum-Limited Metrology With Trapped Ions

June 19, 2005
Author(s)
David J. Wineland, Dietrich G. Leibfried, Murray D. Barrett, A. Ben-Kish, James C. Bergquist, Brad R. Blakestad, John J. Bollinger, Joseph W. Britton, J Chiaverini, B. L. DeMarco, David Hume, Wayne M. Itano, M J. Jensen, John D. Jost, Emanuel H. Knill, Jeroen Koelemeij, C. Langer, Windell Oskay, R Ozeri, Rainer Reichle, Till P. Rosenband, Tobias Schaetz, Piet Schmidt, Signe Seidelin
… We briefly discuss recent experiments on quantum informaiton processing using trapped ions at NIST. A … work has been to increase our capabilities in terms of quantum computing protocols, but we have also been interested … shed light on more fundamental issues, such as the quantum measurement problem. …

Spectroscopic Measurements and Models of Energy Deposition in the Substrate of Quantum Circuits by Natural Ionizing Radiation

November 12, 2024
Author(s)
Joseph Fowler, Paul Szypryt, Raymond Bunker, Ellen Edwards, Ian Fogarty Florang, JIANSONG GAO, Shannon Hoogerheide, Ben Loer, Hans Mumm, Nathan Nakamura, John Orrell, Elizabeth M. Scott, Jason Stevens, Daniel Swetz, Brent VanDevender, Michael Vissers, Joel Ullom
… was designed to mimic the size and composition of a quantum circuit. Specifically, we measured the background … islands—are suitable for integration with superconducting quantum circuits as detectors for background radiation … paths to reducing the impact of background radiation on quantum circuits, supported by an empirically validated model …

Growth, characterization, and applications of self-assembled InGaAs quantum dots

October 1, 2000
Author(s)
Richard P. Mirin, A C. Gossard
… Interest in quantum dots has reached new highs in recent years because of … discrete states, and thus these islands are referred to as quantum dots. InAs has a 7.2% lattice-mismatch to GaAs, and … apart into small, coherently-strained islands. Lateral quantum confinement has been observed in these InAs islands. …

Randomness in nonlocal games between mistrustful players

June 15, 2017
Author(s)
Carl A. Miller, Yaoyun Shi
… If two quantum players at a nonlocal game G achieve a superclassical … any third player. This is the basis for device-independent quantum cryptography. In this paper we address a related … Quantum Information & Computation … quantum information, cryptography, random number generation, …

Digital Control of Superconducting Qubit Using a Josephson Pulse Generator at 3K

March 25, 2022
Author(s)
Logan Howe, Manuel Castellanos Beltran, Adam Sirois, David Olaya, John Biesecker, Paul Dresselhaus, Samuel P. Benz, Pete Hopkins
… Scaling of quantum computers to fault-tolerant levels relies critically … the mixing-chamber stage in highly scaled superconducting quantum information systems. … PRX Quantum … Quantum computing, scalable, cryogenic control, Josephson junction …

Designing Nanocrystal Nanosystems: Quantum-Dot Quantum-Wells to Quantum-Dot Solids

April 1, 2001
Author(s)
Garnett W. Bryant, W Jaskolski
… spectra are obtained for dS/HgS/CdS and ZnS/CdS/ZnS quantum-dot quantum-well nanocrystals. Comparison with experiment shows … electronic structure, nanocrystal, optical absorption, quantum dot, semiconductor … from the International Conference on Semiconductor Quantum Dots | | …

Simulating Concordant Computations

June 23, 2010
Author(s)
Bryan K. Eastin
… concordant computations, discord, simulation, two-qubit … Simulating Concordant Computations …

Quantum information at NIST and the federal research agenda

April 29, 2004
Author(s)
Thomas R. O'Brian, C J. Williams
… is a high level review of technical and policy issues in quantum information. … quantum communications, quantum computing, quantum information … Quantum information at NIST and the federal research agenda …

Relativistic Connection of Discrete- and Continuous-Time Quantum Walks

October 16, 2008
Author(s)
Frederick Strauch
… Quantum walks have deep connections to quantum search algorithms, quantum cellular automata, quantum chaotic maps, and quantum … Dirac equation, entanglement, quantum computation, quantum walk … Relativistic Connection of Discrete- and Continuous-Time Quantum Walks …

Coherent Quantum State Manipulation of Trapped Atomic Ions

January 1, 1998
Author(s)
David J. Wineland, C Monroe, D M. Meekhof, B E. King, Dietrich G. Leibfried, Wayne M. Itano, James C. Bergquist, D J. Berkeland, John J. Bollinger, J D. Miller
… 9Be+ ion is used to investigate methods of coherent quantum-state synthesis. We create and characterize … motion including "Schrödinger- cat" states. A fundamental quantum logic gate is realized using the quantized motion and … some of the applications for, and problems in realizing, quantum computation based on multiple trapped ions. …

Demonstration of an Active Quantum Key Distribution Network

August 1, 2006
Author(s)
Xiao Tang, Lijun Ma, Alan Mink, Anastase Nakassis, Hai Xu, Barry J. Hershman, Joshua Bienfang, David H. Su, Ronald Boisvert, Charles W. Clark, Carl J. Williams
… We previously demonstrated a high speed, point to point, quantum key distribution (QKD) system with polariztion coding … network allows multiple users to generate and share secure quantum keys. In comparison with a passive QKD network, nodes … optical switches, quantum communications network, quantum cryptography, quantum …
Displaying 126 - 150 of 9846
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