Search Results - "Babbush, Ryan"
-
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
The theory of variational hybrid quantum-classical algorithms
Published in New journal of physics (05-02-2016)“…Many quantum algorithms have daunting resource requirements when compared to what is available today. To address this discrepancy, a quantum-classical hybrid…”
Get full text
Journal Article -
4
Matchgate Shadows for Fermionic Quantum Simulation
Published in Communications in mathematical physics (01-12-2023)“…“Classical shadows” are estimators of an unknown quantum state, constructed from suitably distributed random measurements on copies of that state (Huang et al…”
Get full text
Journal Article -
5
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 -
6
Characterizing quantum supremacy in near-term devices
Published in Nature physics (01-06-2018)“…A critical question for quantum computing in the near future is whether quantum devices without error correction can perform a well-defined computational task…”
Get full text
Journal Article -
7
Application of fermionic marginal constraints to hybrid quantum algorithms
Published in New journal of physics (09-05-2018)“…Many quantum algorithms, including recently proposed hybrid classical/quantum algorithms, make use of restricted tomography of the quantum state that measures…”
Get full text
Journal Article -
8
Nearly Optimal Measurement Scheduling for Partial Tomography of Quantum States
Published in Physical review. X (22-09-2020)“…Many applications of quantum simulation require one to prepare and then characterize quantum states by efficiently estimatingk-body reduced density matrices…”
Get full text
Journal Article -
9
Efficient and noise resilient measurements for quantum chemistry on near-term quantum computers
Published in npj quantum information (05-02-2021)“…Variational algorithms are a promising paradigm for utilizing near-term quantum devices for modeling electronic states of molecular systems. However, previous…”
Get full text
Journal Article -
10
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 -
11
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 -
12
Compressing Many-Body Fermion Operators under Unitary Constraints
Published in Journal of chemical theory and computation (08-03-2022)“…The most efficient known quantum circuits for preparing unitary coupled cluster states and applying Trotter steps of the arbitrary basis electronic structure…”
Get full text
Journal Article -
13
Quantum Chemistry Calculations on a Trapped-Ion Quantum Simulator
Published in Physical review. X (24-07-2018)“…Quantum-classical hybrid algorithms are emerging as promising candidates for near-term practical applications of quantum information processors in a wide…”
Get full text
Journal Article -
14
Virtual Distillation for Quantum Error Mitigation
Published in Physical review. X (19-11-2021)“…Contemporary quantum computers have relatively high levels of noise, making it difficult to use them to perform useful calculations, even with a large number…”
Get full text
Journal Article -
15
Nearly Optimal Quantum Algorithm for Estimating Multiple Expectation Values
Published in Physical review letters (09-12-2022)“…Many quantum algorithms involve the evaluation of expectation values. Optimal strategies for estimating a single expectation value are known, requiring a…”
Get full text
Journal Article -
16
Fault-Tolerant Quantum Simulations of Chemistry in First Quantization
Published in PRX quantum (11-11-2021)“…Quantum simulations of chemistry in first quantization offer some important advantages over approaches in second quantization including faster convergence to…”
Get full text
Journal Article -
17
Adiabatic Quantum Simulation of Quantum Chemistry
Published in Scientific reports (13-10-2014)“…We show how to apply the quantum adiabatic algorithm directly to the quantum computation of molecular properties. We describe a procedure to map electronic…”
Get full text
Journal Article -
18
Qubitization of Arbitrary Basis Quantum Chemistry Leveraging Sparsity and Low Rank Factorization
Published in Quantum (Vienna, Austria) (02-12-2019)“…Recent work has dramatically reduced the gate complexity required to quantum simulate chemistry by using linear combinations of unitaries based methods to…”
Get full text
Journal Article -
19
Increasing the Representation Accuracy of Quantum Simulations of Chemistry without Extra Quantum Resources
Published in Physical review. X (07-01-2020)“…Proposals for experiments in quantum chemistry on quantum computers leverage the ability to target a subset of degrees of freedom containing the essential…”
Get full text
Journal Article -
20
Low rank representations for quantum simulation of electronic structure
Published in npj quantum information (27-05-2021)“…The quantum simulation of quantum chemistry is a promising application of quantum computers. However, for N molecular orbitals, the O ( N 4 ) gate complexity…”
Get full text
Journal Article