Search Results - "Neven, Hartmut"
-
1
Power of data in quantum machine learning
Published in Nature communications (11-05-2021)“…The use of quantum computing for machine learning is among the most exciting prospective applications of quantum technologies. However, machine learning tasks…”
Get full text
Journal Article -
2
Decoding quantum errors with subspace expansions
Published in Nature communications (31-01-2020)“…With rapid developments in quantum hardware comes a push towards the first practical applications. While fully fault-tolerant quantum computers are not yet…”
Get full text
Journal Article -
3
Barren plateaus in quantum neural network training landscapes
Published in Nature communications (16-11-2018)“…Many experimental proposals for noisy intermediate scale quantum devices involve training a parameterized quantum circuit with a classical optimization loop…”
Get full text
Journal Article -
4
Universal quantum control through deep reinforcement learning
Published in npj quantum information (23-04-2019)“…Emerging reinforcement learning techniques using deep neural networks have shown great promise in control optimization. They harness non-local regularities of…”
Get full text
Journal Article -
5
Low-Depth Quantum Simulation of Materials
Published in Physical review. X (21-03-2018)“…Quantum simulation of the electronic structure problem is one of the most researched applications of quantum computing. The majority of quantum algorithms for…”
Get full text
Journal Article -
6
Optimizing Variational Quantum Algorithms Using Pontryagin’s Minimum Principle
Published in Physical review. X (18-05-2017)“…We use Pontryagin’s minimum principle to optimize variational quantum algorithms. We show that for a fixed computation time, the optimal evolution has a…”
Get full text
Journal Article -
7
Encoding Electronic Spectra in Quantum Circuits with Linear T Complexity
Published in Physical review. X (01-10-2018)“…We construct quantum circuits that exactly encode the spectra of correlated electron models up to errors from rotation synthesis. By invoking these circuits as…”
Get full text
Journal Article -
8
Systematic Dimensionality Reduction for Quantum Walks: Optimal Spatial Search and Transport on Non-Regular Graphs
Published in Scientific reports (02-09-2015)“…Continuous time quantum walks provide an important framework for designing new algorithms and modelling quantum transport and state transfer problems. Often,…”
Get full text
Journal Article -
9
What is the Computational Value of Finite-Range Tunneling?
Published in Physical review. X (01-08-2016)“…Quantum annealing (QA) has been proposed as a quantum enhanced optimization heuristic exploiting tunneling. Here, we demonstrate how finite-range tunneling can…”
Get full text
Journal Article -
10
Computational multiqubit tunnelling in programmable quantum annealers
Published in Nature communications (07-01-2016)“…Quantum tunnelling is a phenomenon in which a quantum state traverses energy barriers higher than the energy of the state itself. Quantum tunnelling has been…”
Get full text
Journal Article -
11
Machine learning of high dimensional data on a noisy quantum processor
Published in npj quantum information (11-11-2021)“…Quantum kernel methods show promise for accelerating data analysis by efficiently learning relationships between input data points that have been encoded into…”
Get full text
Journal Article -
12
Focus beyond Quadratic Speedups for Error-Corrected Quantum Advantage
Published in PRX quantum (29-03-2021)“…In this perspective we discuss conditions under which it would be possible for a modest fault-tolerant quantum computer to realize a runtime advantage by…”
Get full text
Journal Article -
13
Optimal fermion-to-qubit mapping via ternary trees with applications to reduced quantum states learning
Published in Quantum (Vienna, Austria) (04-06-2020)“…We introduce a fermion-to-qubit mapping defined on ternary trees, where any single Majorana operator on an n -mode fermionic system is mapped to a multi-qubit…”
Get full text
Journal Article -
14
Design and Characterization of a 28-nm Bulk-CMOS Cryogenic Quantum Controller Dissipating Less Than 2 mW at 3 K
Published in IEEE journal of solid-state circuits (01-11-2019)“…Implementation of an error-corrected quantum computer is believed to require a quantum processor with a million or more physical qubits, and, in order to run…”
Get full text
Journal Article -
15
Nonergodic Delocalized States for Efficient Population Transfer within a Narrow Band of the Energy Landscape
Published in Physical review. X (01-01-2020)“…We address the long-standing problem of the structure of the low-energy eigenstates and long-time coherent dynamics in quantum spin-glass models. Below the…”
Get full text
Journal Article -
16
Improved Fault-Tolerant Quantum Simulation of Condensed-Phase Correlated Electrons via Trotterization
Published in Quantum (Vienna, Austria) (16-07-2020)“…Recent work has deployed linear combinations of unitaries techniques to reduce the cost of fault-tolerant quantum simulations of correlated electron models…”
Get full text
Journal Article -
17
Quantum simulation of exact electron dynamics can be more efficient than classical mean-field methods
Published in Nature communications (10-07-2023)“…Quantum algorithms for simulating electronic ground states are slower than popular classical mean-field algorithms such as Hartree–Fock and density functional…”
Get full text
Journal Article -
18
Compilation of Fault-Tolerant Quantum Heuristics for Combinatorial Optimization
Published in PRX quantum (09-11-2020)“…Here we explore which heuristic quantum algorithms for combinatorial optimization might be most practical to try out on a small fault-tolerant quantum…”
Get full text
Journal Article -
19
Optimizing quantum gates towards the scale of logical qubits
Published in Nature communications (18-03-2024)“…A foundational assumption of quantum error correction theory is that quantum gates can be scaled to large processors without exceeding the error-threshold for…”
Get full text
Journal Article -
20
Low-Depth Mechanisms for Quantum Optimization
Published in PRX quantum (01-07-2021)“…One of the major application areas of interest for both near-term and fault-tolerant quantum computers is the optimization of classical objective functions. In…”
Get full text
Journal Article