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Displaying 376 - 400 of 9847

Quantum dot lasers - history and future prospects

January 29, 2021
Author(s)
Richard Mirin, John E. Bowers, Justin Norman
… initial efforts to use molecular beam epitaxy to grow InAs quantum dots on GaAs via the Stranski-Krastanow transition. … We then discuss the initial efforts to use these quantum dots to demonstrate quantum dot lasers. We discuss the developments in quantum … quantum dot lasers, optical isolation …

Multiverse: Quantum Optical Network Management

March 19, 2023
Author(s)
Abdella Battou
… the software-defined management system of DC-QNet, a quantum network testbed deployed across multiple distant … the optical network, the classical IP network, and the quantum equipment involved in a quantum networking experiment. The NMS also implements a … quantum networks, optical networks, network management …

A Diner's Guide to Evaluating a Framework for Ubiquitous Computing Applications

October 1, 2005
Author(s)
Mary F. Theofanos, Jean C. Scholtz
… evaluation methodologies specifically suited to ubiquitous computing applications. Here we investigate a user evaluation … evaluation framework, measures, metrics, ubiquitous computing … A Diner's Guide to Evaluating a Framework for Ubiquitous Computing Applications …

Motional Squeezing for Trapped Ion Transport and Separation

August 20, 2021
Author(s)
Robert Sutherland, Shaun Burd, Daniel Slichter, Stephen Libby, Dietrich Leibfried
… ion crystals are essential operations for most large-scale quantum computing architectures. In this Letter, we develop a … trapped ion, quantum computing …

Cryogenic Characterization of a Superconductor Quantum-Based Microwave Reference Source for Communications and Quantum Information

October 13, 2021
Author(s)
Alirio De Jesus Soares Boaventura, Justus Brevik, Dylan Williams, Nathan Flowers-Jacobs, Manuel Castellanos Beltran, Anna Fox, Pete Hopkins, Paul Dresselhaus, Samuel P. Benz
… synthesizer (RF-JAWS), for communications metrology and quantum information applications. An important aspect of the … of microwave superconducting devices for solid-state quantum computers and could help to optimize the quantum-classical interfaces in these systems. …

Molecular engineering with artificial atoms: designing a material platform for scalable quantum spintronics and photonics

September 7, 2017
Author(s)
Matthew Doty, Xiangyu Ma, Joshua Zide, Garnett W. Bryant
… Self-assembled InAs Quantum Dots (QDs) are often called artificial atoms" and have long been of interest as components of quantum photonic and spintronic devices. Although there has … between two separated QDs, the path toward scalable quantum photonic devices based on spins remains challenging. …

New Mission and Opportunity for Mathematics Researchers: Cryptography in Quantum Era

February 1, 2020
Author(s)
Lidong Chen, Dustin Moody
… This article introduces the NIST Post-Quantum Cryptography standardization process. We highlight … discuss the mathematical problems in the proposed post-quantum cryptographic algorithms and the opportunities for … post-quantum cryptography, public-key cryptography, mathematical …

Joint Quantum State and Measurement Tomography with Incomplete Measurements

October 12, 2018
Author(s)
Adam C. Keith, Charles H. Baldwin, Scott C. Glancy, Emanuel H. Knill
… Estimation of quantum states and measurements is crucial for the implementation of quantum information protocols. The standard method for each is quantum tomography (QT). However, QT suffers from systematic … quantum information, quantum tomography, ion trapping, …

Thermal release tape-assisted semiconductor membrane transfer process for hybrid photonic devices embedding quantum emitters

April 19, 2022
Author(s)
Cori Haws, Biswarup Guha, Edgar Perez, Marcelo Davanco, Jin Dong Song, Kartik Srinivasan, Luca Sapienza
… found or exploited within a single system. In the realm of quantum and nanophotonics, for instance, one might want to … functionalities by combining efficient classical and quantum light emission available in III-V semiconductors, … dimensions up to about 260 um x 80 um, containing InAs quantum dots, on a gold substrate. We show that the presence …

Electronic Properties of Quantum-Dot Molecules

April 1, 2003
Author(s)
W Jaskolski, M Zielinski, Garnett W. Bryant
… We investigate the electronic structure of several double quantum dot systems: (I) hetero-dot artificial molecules … two vertically stacked pyramidal self-organized InAs/GaAs quantum dots. The calculations are performed using the … significant coupling between the nanocrystals that form quantum-dot molecule. When two quantum dots are close enough, …

Thermodynamic Control of Germanium Quantum Dot Growth on Silicon

May 1, 2005
Author(s)
Richard J. Wagner, E Gulari
… produces self-assembled, nanometer scale islands, or quantum dots. We study this growth by atomistic simulation, … atomistic, germanium, quantum dots, self-assembly, silicon, simulation, … Thermodynamic Control of Germanium Quantum Dot Growth on Silicon …

Evolution of the Shapes of InAs and InGaAs Quantum Dots

January 1, 2001
Author(s)
Richard P. Mirin, Alexana Roshko, M. van der Puijl, Andrew G. Norman
… The exact shape of self-assembled quantum dots is still a controversial subject in the … the energy levels and electron wavefunctions in the quantum dots. We will describe reflection high energy … microscopy (TEM) measurements on both InAs and InGaAs quantum dots growth on (100) GaAs substrates. …

SPHINCS-Simpira: Fast Stateless Hash-based Signatures with Post-quantum Security

June 29, 2017
Author(s)
Shay Gueron, Nicky Mouha
… EUROCRYPT 2015 as a hash-based signature scheme with post-quantum security. At ASIACRYPT 2016, Gueron and Mouha … we explain why the same claim can be made against quantum computers as well. Although Simpira follows a very … Simpira, SPHINCS, post-quantum security, hash-based signature, AES-NI …

A Source for Mesoscopic Quantum Optics

October 22, 2015
Author(s)
Georg Harder, Timothy J. Bartley, Adriana Lita, Sae Woo Nam, Thomas Gerrits, Christine Silberhorn
… The nature of quantum decoherence renders the observation of nonclassical … photons have been used in a broad range of contexts, from quantum enhanced metrology, fundamental tests of local realism to quantum information tasks such as Boson sampling and quantum …

Compact and Tunable Forward Coupler Based on High-Impedance Superconducting Nanowires

February 25, 2021
Author(s)
Marco Colangelo, Di Zhu, Daniel F. Santavicca, Brenden Butters, Joshua Bienfang, Karl K. Berggren
… electronics is essential for scaling up low-temperature quantum computing systems. In this paper, we demonstrate an … signal distribution bottlenecks in developing large-scale quantum computers. … superconducting nanowires, SNSPD, quantum computing, single-photon detectors, microwave …

Guidelines for Automatic Data Processing Physical Security and Risk Management

June 1, 1974
Author(s)
Institute for Computer Sciences and Technology National Bureau of Standards
… and information relevant to physical security of computer data and facilities and references many applicable … Institute for Computer Sciences and Technology National Bureau of Standards … ADP security, computer reliability, contingency plans, Federal Information …

Quantum dot semiconductor optical amplifiers

July 1, 2000
Author(s)
Richard P. Mirin, D. J. Blumenthal
… semiconductor optical amplifier using self-assembled quantum dots as the gain medium is proposed and analyzed. … Cross-gain modulation is greatly reduced when the quantum dots are electronically uncoupled. … quantum dots, semiconductor optical amplifiers … Quantum dot semiconductor optical amplifiers …

Hole spins in an InAs/GaAs quantum dot molecule subject to lateral electric fields

June 4, 2016
Author(s)
Xiangyu Ma, Garnett W. Bryant, Matthew Doty
… progress in manipulating electron and hole spin states in quantum dots or quantum dot molecules (QDMs) with growth-direction (vertical) … quantum dot, quantum dot molecules, holes, spin, lateral fields, Zeeman … Hole spins in an InAs/GaAs quantum dot molecule subject to lateral electric fields …

Experimental demonstration of a receiver beating the standard quantum limit for multiple nonorthogonal coherent-state discrimination

January 6, 2013
Author(s)
Francisco E. Becerra Chavez, Jingyun Fan, Gerald Baumgartner, Julius Goldhar, Jonathan Kosloski, Alan L. Migdall
… The measurement of the state of a quantum system with inherent quantum uncertainty (noise) approaching the ultimate physical … limits is of both technological and fundamental interest. Quantum noise prevents any mutually nonorthogonal quantum … quantum mechanics, standard quantum limit, metrology, …

Quantum Estimation of the Classical Gravitational Field

November 6, 2017
Author(s)
Emanuel H. Knill, T. G. Downes, G. J. Milburn, C. M. Caves, J. R. van Meter
… Here we describe a quantum limit to measurement of the classical gravitational field. Specifically, we formulate the quantum Cramer-Rao lower bound for estimating the single … metrics. We employ the locally covariant formulation of quantum field theory in curved spacetime, which allows for a …

Designing Quantum Dots and Quantum-Dot Solids

October 1, 2001
Author(s)
Garnett W. Bryant, W Jaskolski
… spectra are obtained for CdS/HgS/CdS and ZnS/CdS/ZnS quantum-dot quantum-well barrier/well/barrier nanocrystals. Comparison … electronic structure, nanocrystal, optical absorption, quantum dot, semiconductor … Designing Quantum Dots and Quantum-Dot Solids …
Displaying 376 - 400 of 9847
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