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Displaying 26 - 50 of 9839

Fast Quantum Algorithms for Traversing Paths of Eigenstates

May 17, 2010
Author(s)
S. Boixo, Emanuel Knill, Rolando Somma
… 0 Solutions to this problem have applications ranging from quantum physics simulation to optimization. For Hamiltonians, … Quantum Information & Computation … quantum computing, quantum algorithms, adiabatic methods … Fast Quantum Algorithms for Traversing Paths of Eigenstates …

Microwaves in Quantum Computing

January 29, 2021
Author(s)
Joseph C. Bardin, Daniel Slichter, David J. Reilly
… The growing field of quantum computing relies on a broad range of microwave … Here we review the use of microwave signals and systems in quantum computing, with specific reference to three leading quantum computing platforms: trapped atomic ion qubits, spin … Quantum computing, trapped ions, superconducting qubits, …

Parallelism for Quantum Computation with Qudits

March 31, 2006
Author(s)
Dianne M. O'Leary
… Robust quantum computation with d-level quantum systems (qudits) … quantum computing, qudit, universal quantum computation … Parallelism for Quantum Computation with Qudits …

Compressed gate characterization for quantum devices with time-correlated noise

July 22, 2023
Author(s)
Michael Gullans, Miguel Caranti, Adam Mills, Jason Petta
… As quantum devices make steady progress towards intermediate scale and fault-tolerant quantum computing, it is essential to develop rigorous and … known sources of noise in each architecture. Most existing quantum characterization protocols such as gate-set … PRX Quantum …

Testing quantum expanders is co-QMA-complete

May 31, 2013
Author(s)
Yi-Kai Liu, Stephen P. Jordan, Pawel Wocjan, Adam Bookatz
… A quantum expander is a unital quantum channel that is rapidly mixing, has only a few Kraus operators, and can be implemented efficiently on a quantum computer. We consider the problem of estimating the … Computational complexity, quantum information, quantum expanders, mixing time, …

Crystalline Quantum Circuits

July 31, 2023
Author(s)
Grace Sommers, David Huse, Michael Gullans
… Random quantum circuits continue to inspire a wide range of applications in quantum information science, while remaining analytically … with fractal dynamics. We use the formalism of Clifford quantum cellular automata to describe operator spreading, … PRX Quantum …

Ray-based framework for state identification in quantum dot devices

June 7, 2021
Author(s)
Justyna Zwolak, Thomas McJunkin, Sandesh Kalantre, Samuel Neyens, Evan MacQuarrie, Mark A. Eriksson, Jacob Taylor
… Quantum dots (QDs) defined with electrostatic gates are a leading platform for a scalable quantum computing implementation. However, with increasing … learning techniques for nontraditional measurements in quantum systems with high-dimensional parameter spaces and …

Quantum computational advantage with a programmable photonic processor

June 1, 2022
Author(s)
L.S. Madsen, F. Laudenbach, M.F. Askarani, F. Rortais, T. Vincent, J.F.F. Bulmer, F.M. Miatto, L. Neuhaus, L.G. Helt, Matthew Collins, Adriana Lita, Thomas Gerrits, Sae Woo Nam, V.D. Vaidya, M. Menotti, I. Dhand, Zachary Vernon, N. Quesada, J. Lavoie
… The demonstration of quantum computational advantage is a key milestone in the … no fully programmable photonic machine has demonstrated quantum computational advantage; photonic-based claims were … hardware. In this work we report a demonstration of quantum computational advantage using a fully programmable …

A Testbed for Quantum Communication and Quantum Networks

May 13, 2019
Author(s)
Lijun Ma, Abdella Battou, Xiao Tang, Oliver T. Slattery
… The development of Quantum Networks is underway with significant acceleration in in recent years. Meanwhile. quantum scale devices and components such as single photon … Therefore, there is a need to test new and existing quantum devices, protocols and alternative network …

Josephson Junction Materials Research Using Phase Qubits

May 30, 2006
Author(s)
Raymond Simmonds, Dustin P. Hite, Robert McDermott, Matthias Steffen, Ken B. Cooper, Kristine Lang, John M. Martinis, David P. Pappas
… Macroscopic Quantum Coherence and Computing … decoherence, Josephson tunnel junction, Materials research, Quantum computing … Quantum Computation: solid state systems …

Transition edge sensors with low jitter and fast recovery times

July 30, 2012
Author(s)
Antia A. Lamas-Linares, Nathan A. Tomlin, Brice R. Calkins, Adriana E. Lita, Thomas Gerrits, Joern Beyer, Richard P. Mirin, Sae Woo Nam
… photon detection have been shown to have almost perfect quantum efficiency (98%) at a wide range of wavelengths. Their high quantum efficiency combined with their ability to … structure. These are highly desired properties in quantum optics experiments, however, the wider adoption of …

Magic-state distillation with the four-qubit code

April 20, 2012
Author(s)
Adam M. Meier, Bryan K. Eastin, Emanuel H. Knill
… states is an often-cited technique for enabling universal quantum computing once the error rate for a special subset of gates … Quantum Information & Computation … distillation, fault-tolerance, magic state, quantum computing …

Detection of Surface Spins Causing Flux Noise in Quantum Devices using Electron Spin Resonance

December 1, 2025
Author(s)
Dustin Hassenmayer, Patrick Lenahan, Jason Ryan, Stephen Moxim
… The improvement of quantum computing technologies relies on the reduction of … defects believed to contribute to flux noise in quantum devices. Our approach greatly enhances ESR's … IEEE International Conference on Quantum Computing and Engineering (QCE) … Quantum decoherence, Electron spin resonance, Flux noise, …

Optical Quantum Memory Applications in Quantum Communication

September 6, 2019
Author(s)
Oliver T. Slattery, Xiao Tang, Lijun Ma
… Optical quantum memory is a device that can store the quantum state of photons and retrieve it with high fidelity on demand. Many approaches to quantum memory have been proposed and demonstrated. Quantum … quantum memory, quantum communication, quantum network …

Fault-Tolerant Compiling of Classically Hard Instantaneous Quantum Polynomial Circuits on Hypercubes

May 28, 2025
Author(s)
Dominik Hangleiter, Marcin Kalinowkski, Dolev Bluvstein, Madelyn Cain, Nishad Maskara, Xun Gao, Aleksander Kubica, Mikhail Lukin, Michael Gullans
… Quantum computational advantage is challenging to maintain … asymptotically in the presence of noise. Fault-tolerant quantum computing provides a route to noiseless computations, … algorithms. Here, we develop a fault-tolerant approach to quantum advantage that is both tailored to the quantum …

Energy efficient single flux quantum based neuromorphic computing

November 8, 2018
Author(s)
Michael Schneider, Christine A. Donnelly, Stephen E. Russek, Burm Baek, Matthew Pufall, Pete Hopkins, William Rippard
… explored for their potential to increase the efficiency of computing certain problems, and thus facilitate machine … Among the technologies being developed, single flux quantum based Josephson junctions are a promising choice for … regime. MJJ devices integrated with standard single flux quantum neural systems form a new class of neuromorphic …

Quantum Lego Expansion Pack: Enumerators from Tensor Networks

July 22, 2024
Author(s)
ChunJun Cao, Michael Gullans, Brad Lackey, Zitao Wang
… We provide the first tensor network method for computing quantum weight enumerator polynomials in the most general form. As a corollary, if a quantum code has a known tensor network construction of its … enumerators. In particular, for any code built from the quantum lego method, we use enumerators to construct its …

Advanced technologies for quantum photonic devices based on epitaxial quantum dots

October 11, 2019
Author(s)
Tian M. Zhao, Yan Chen, Yu Ying, Li Qing, Marcelo I. Davanco, Jin Liu
… Photonic quantum technology is creating breakthroughs in both fundamental quantum science and applications such as quantum communication, computation and sensing. Regarded as … Advanced Quantum Technologies … Quantum Dots, Single-Photon Sources … Advanced technologies for quantum photonic devices based on epitaxial quantum dots …
Displaying 26 - 50 of 9839
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