Itay Hen Publications

Itay Hen'

Itay Hen

Publications

2025
A quantum Monte Carlo algorithm for arbitrary high-spin Hamiltonians
Arman Babakhani, Lev Barash, Itay Hen
arXiv preprint arXiv:2503.08039,  2025
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Advanced measurement techniques in quantum Monte Carlo: The permutation matrix representation approach
Nic Ezzell, Itay Hen
arXiv preprint arXiv:2504.07295,  2025
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Inequalities, identities, and bounds for divided differences of the exponential function
Qiulin Zeng, Nicholas Ezzell, Arman Babakhani, Itay Hen, Lev Barash
arXiv preprint arXiv:2510.10724,  2025
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Applying Permutation Matrix Representation Quantum Monte Carlo to higher-spin systems and fermionic systems
Lev Y Barash, Arman Babakhani, Itay Hen
SMT 2025,  2025
Oral: Mitigating the QMC sign problem via local transformations
Arman Babakhani, Itay Hen
SMT 2025,  2025
The Quantum Monte Carlo Sign Problem: Recent Advances and Paths Forward
Itay Hen
SMT 2025,  2025
Advanced measurement in quantum Monte Carlo
Nic Ezzell, Lev Y Barash, Itay Hen
SMT 2025,  2025
Permutation matrix representation quantum Monte Carlo: A universal framework for simulating arbitrary quantum many-body systems
Itay Hen
SMT 2025,  2025
A universal black-box quantum Monte Carlo approach to quantum phase transitions
Nic Ezzell, Lev Barash, Itay Hen
npj Computational Materials,  2025
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Exponential divided differences via Chebyshev polynomials
Itay Hen
arXiv preprint arXiv:2512.23061,  2025
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2024
A simple quantum simulation algorithm with near-optimal precision scaling
Amir Kalev, Itay Hen
arXiv preprint arXiv:2412.10667,  2024
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Exact and universal quantum Monte Carlo estimators for energy susceptibility and fidelity susceptibility
Nic Ezzell, Lev Barash, Itay Hen
arXiv preprint arXiv:2408.03924,  2024
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ClassiFIM: an unsupervised method to detect phase transitions
Victor Kasatkin, Evgeny Mozgunov, Nicholas Ezzell, Utkarsh Mishra, Itay Hen, Daniel Lidar
arXiv preprint arXiv:2408.03323,  2024
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Feynman path integrals for discrete-variable systems: Walks on Hamiltonian graphs
Amir Kalev, Itay Hen
arXiv preprint arXiv:2407.11231,  2024
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A Monte Carlo algorithm for calculating the overlap between ground states
Itay Hen, Lev Barash, Amir Kalev
Bulletin of the American Physical Society,  2024
Quantum Monte Carlo from polynomial roots
Lev Barash, Arman Babakhani, Itay Hen
Bulletin of the American Physical Society,  2024
Accounting for gauge symmetries in CHSH experiments
David H Oaknin, Amir Kalev, Itay Hen
arXiv preprint arXiv:2403.07935,  2024
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Using quantum Monte Carlo to study quantum phase transitions
Nic Ezzell, Lev Barash, Itay Hen
Bulletin of the American Physical Society,  2024
Quantum Monte Carlo algorithm for arbitrary spin-1/2 Hamiltonians
Lev Barash, Arman Babakhani, Itay Hen
Physical Review Research 6 (1), 013281,  2024
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Resource-Efficient Quantum Simulations on NISQ Devices: Advancing the State-of-the-Art (Final Technical Report)
Itay Hen
Univ. of Southern California, Los Angeles, CA (United States),  2024
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Q4Q: Quantum Computation for Quantum Prediction of Materials and Molecular Properties
Rosa Di Felice, Anna Krylov, Itay Hen, Amir Kalev, Marco Fornari, Marco Buongiorno Nardelli
Univ. of Southern California, Los Angeles, CA (United States),  2024
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2023
Exploiting maximally mixed states for spectral estimation by time evolution
Kaelyn J Ferris, Zihang Wang, Itay Hen, Amir Kalev, Nicholas T Bronn, Vojtech Vlcek
arXiv preprint arXiv:2312.00687,  2023
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Quantum Monte Carlo algorithm for Bose-Hubbard models on arbitrary graphs
Emre Akaturk, Itay Hen
arXiv preprint arXiv:2309.05166,  2023
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Q-CASA Invited Speaker Simulating Hamiltonian Dynamics with the Off-diagonal Series Expansion
Itay Hen
2023 IEEE International Parallel and Distributed Processing Symposium …,  2023
Evaluating quantum expectation values with the off-diagonal series expansion
Lev Barash, Uday Singla, Itay Hen
APS March Meeting Abstracts 2023, B62. 013,  2023
Bitstring-ChiFc: machine learning Fisher Information Metric from bitstrings
Victor Kasatkin, Itay Hen, Nic Ezzell, Utkarsh Mishra, Daniel Lidar, Lalit Gupta, Evgeny Mozgunov
APS March Meeting Abstracts 2023, T60. 010,  2023
Mitigating the sign problem with Permutation Matrix Representation quantum Monte Carlo
Itay Hen
APS March Meeting Abstracts 2023, W62. 009,  2023
2022
Localization transition induced by programmable disorder
Jaime LC da C Filho, Zoe Gonzalez Izquierdo, Andreia Saguia, Tameem Albash, Itay Hen, Marcelo S Sarandy
Physical Review B 105 (13), 134201,  2022
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3-regular three-XORSAT planted solutions benchmark of classical and quantum heuristic optimizers
Matthew Kowalsky, Tameem Albash, Itay Hen, Daniel A Lidar
Quantum Science and Technology 7 (2), 025008,  2022
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Calculating elements of matrix functions using divided differences
Lev Barash, Stefan Güttel, Itay Hen
Computer Physics Communications 271, 108219,  2022
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The sign problem, non-stoquasticity and everything in between
Itay Hen
APS March Meeting Abstracts 2022, N43. 005,  2022
2021
Bell-type games on deformable manifolds
David H Oaknin, Amir Kalev, Itay Hen
arXiv preprint arXiv:2111.14228,  2021
An integral-free representation of the Dyson series using divided differences
Amir Kalev, Itay Hen
New Journal of Physics 23 (10), 103035,  2021
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Quantifying the impact of precision errors on quantum approximate optimization algorithms
Gregory Quiroz, Paraj Titum, Phillip Lotshaw, Pavel Lougovski, Kevin Schultz, Eugene Dumitrescu, Itay Hen
arXiv preprint arXiv:2109.04482,  2021
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Quantum algorithm for time-dependent hamiltonian simulation by permutation expansion
Yi-Hsiang Chen, Amir Kalev, Itay Hen
PRX Quantum 2 (3), 030342,  2021
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Observation of many-body localization in an experimental quantum annealer
Zoe Gonzalez Izquierdo, Andreia Saguia, Tameem Albash, Itay Hen, Marcelo S Sarandy
arXiv e-prints, arXiv: 2108.06762,  2021
Testing a quantum annealer as a quantum thermal sampler
Zoe Gonzalez Izquierdo, Itay Hen, Tameem Albash
ACM Transactions on Quantum Computing 2 (2), 1-20,  2021
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Determining quantum Monte Carlo simulability with geometric phases
Itay Hen
Physical Review Research 3 (2), 023080,  2021
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Quantum Algorithm for Simulating Hamiltonian Dynamics with an Off-diagonal Series Expansion
Itay Hen, Amir Kalev
APS March Meeting Abstracts 2021, P34. 002,  2021
Benchmarking State Of The Art Ising Machines
Matthew Kowalsky, Tameem Albash, Itay Hen, Daniel Lidar
APS March Meeting Abstracts 2021, E34. 002,  2021
A Filter Function Perspective on Faulty Quantum Approximate Optimization Algorithms
Gregory Quiroz, Paraj Titum, Pavel Lougovski, Kevin Schultz, Eugen Dumitrescu, Itay Hen
APS March Meeting Abstracts 2021, E34. 011,  2021
Quantum algorithm for simulating hamiltonian dynamics with an off-diagonal series expansion
Amir Kalev, Itay Hen
Quantum 5, 426,  2021
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2020
Efficient simulation of so-called non-stoquastic superconducting flux circuits
Tom Halverson, Lalit Gupta, Moshe Goldstein, Itay Hen
arXiv preprint arXiv:2011.03831,  2020
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De-signing Hamiltonians for quantum adiabatic optimization
Elizabeth Crosson, Tameem Albash, Itay Hen, AP Young
Quantum 4, 334,  2020
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Power of Non-Stoquastic Quantum Annealing Optimization
Itay Hen, University of Southern California Marina del Rey United States
2020
Discriminating nonisomorphic graphs with an experimental quantum annealer
Zoe Gonzalez Izquierdo, Ruilin Zhou, Klas Markström, Itay Hen
Physical Review A 102 (3), 032622,  2020
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Calculating the divided differences of the exponential function by addition and removal of inputs
Lalit Gupta, Lev Barash, Itay Hen
Computer Physics Communications 254, 107385,  2020
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Permutation matrix representation quantum Monte Carlo
Lalit Gupta, Tameem Albash, Itay Hen
Journal of Statistical Mechanics: Theory and Experiment 2020 (7), 073105,  2020
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Analog errors in quantum annealing: doom and hope (vol, pg, 2019)
Adam Pearson, Anurag Mishra, Itay Hen, Daniel A Lidar
NPJ QUANTUM INFORMATION 6 (1),  2020
Solving the Graph Isomorphism Problem on a Quantum Annealer
Zoe Gonzalez Izquierdo, Itay Hen, Ruilin Zhou
Bulletin of the American Physical Society 65,  2020
Quantum Simulations of Superconducting Flux Circuits
Thomas Halverson, Lalit Gupta, Moshe Goldstein, Itay Hen
Bulletin of the American Physical Society 65,  2020
Solving Verification and Validation Problems with Quantum Annealing Samplers
Itay Hen, University of Southern California Marina del Rey United States
2020
Testing a quantum annealer as a quantum thermal sampler
Zoe Gonzalez Izquierdo, Tameem Albash, Itay Hen
arXiv e-prints, arXiv: 2003.00361,  2020
Hybrid quantum-classical algorithms for solving the weighted csp
Hong Xu, OK Sun, Sven Koenig, Itay Hen, S Kumar
Proceedings of the International Symposium on Artificial Intelligence and …,  2020
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Elucidating the interplay between non‐stoquasticity and the sign problem
Lalit Gupta, Itay Hen
Advanced Quantum Technologies 3 (1), 1900108,  2020
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Simulating Hamiltonian Dynamics with an Off-diagonal Series Expansion
Amir Kalev, Itay Hen
arXiv preprint arXiv:2006.02539,  2020
Author Correction: Analog errors in quantum annealing: doom and hope
Adam Pearson, Mishra Anurag, Hen Itay, Daniel A Lidar
npj Quantum Information 6 (1),  2020
Hardness and ease of curing the sign problem for two-local qubit Hamiltonians
Joel Klassen, Milad Marvian, Stephen Piddock, Marios Ioannou, Itay Hen, Barbara M Terhal
SIAM Journal on Computing 49 (6), 1332-1362,  2020
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Stoquastic simulations of non-stoquastic superconducting flux circuits
Harel Kol-Namer, Tom Halverson, Lalit Gupta, Moshe Goldstein, Itay Hen
arXiv e-prints, arXiv: 2011.03831,  2020
2019
Analog errors in quantum annealing: doom and hope
Adam Pearson, Anurag Mishra, Itay Hen, Daniel A Lidar
npj Quantum Information 5 (1), 107,  2019
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Analog nature of quantum adiabatic unstructured search
Mikhail Slutskii, Tameem Albash, Lev Barash, Itay Hen
New Journal of Physics 21 (11), 113025,  2019
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Estimating the density of states of frustrated spin systems
Lev Barash, Jeffrey Marshall, Martin Weigel, Itay Hen
New Journal of Physics 21 (7), 073065,  2019
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Equation planting: a tool for benchmarking Ising machines
Itay Hen
Physical Review Applied 12 (1), 011003,  2019
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How quantum is the speedup in adiabatic unstructured search?
Itay Hen
Quantum Information Processing 18 (6), 162,  2019
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Future of physical quantum annealers: Impediments and hopes
Tameem Albash, Itay Hen
Science and Culture,  2019
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Analog errors in Ising machines
Tameem Albash, Victor Martin-Mayor, Itay Hen
Quantum Science and Technology 4 (2), 02LT03,  2019
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On the computational complexity of curing non-stoquastic Hamiltonians
Milad Marvian, Daniel A Lidar, Itay Hen
Nature communications 10 (1), 1571,  2019
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Power of pausing: Advancing understanding of thermalization in experimental quantum annealers
Jeffrey Marshall, Davide Venturelli, Itay Hen, Eleanor G Rieffel
Physical Review Applied 11 (4), 044083,  2019
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Resolution of the sign problem for a frustrated triplet of spins
Itay Hen
Physical Review E 99 (3), 033306,  2019
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Off-Diagonal Expansion Quantum Monte Carlo
Itay Hen, Tameem Albash, Lalit Gupta
APS March Meeting Abstracts 2019, V16. 001,  2019
Circuit fault diagnosis using quantum annealing and other spin glass solvers
Brendan Reid, Elizabeth Crosson, Itay Hen
APS March Meeting Abstracts 2019, L42. 003,  2019
Testing the D-Wave 2000Q as a quantum Monte Carlo simulator
Zoe Gonzalez Izquierdo, Itay Hen, Tameem Albash
APS March Meeting Abstracts 2019, L42. 011,  2019
2018
Solving Quantum Spin Glasses with Off-Diagonal Expansion Quantum Monte Carlo
Itay Hen, Tameem Albash
Journal of Physics: Conference Series 1136 (1), 012007,  2018
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Quantum annealing of the -spin model under inhomogeneous transverse field driving
Yuki Susa, Yu Yamashiro, Masayuki Yamamoto, Itay Hen, Daniel A Lidar, Hidetoshi Nishimori
Physical Review A 98 (4), 042326,  2018
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Off-diagonal series expansion for quantum partition functions
Itay Hen
Journal of Statistical Mechanics: Theory and Experiment 2018 (5), 053102,  2018
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On the computational complexity of curing the sign problem
Milad Marvian, Daniel A Lidar, Itay Hen
arXiv preprint arXiv:1802.03408,  2018
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Efficiently Estimating the Density of States of Frustrated Systems
Lev Barash, Itay Hen, Jeffrey Marshall, Martin Weigel
APS March Meeting Abstracts 2018, A38. 009,  2018
From non-stoquastic to stoquastic Hamiltonians
Milad Marvian Mashhad, Itay Hen, Daniel Lidar
APS March Meeting Abstracts 2018, H39. 009,  2018
Can Analog Quantum Computers Solve Spin Glasses?
Itay Hen, Victor Martin-Mayor
APS March Meeting Abstracts 2018, L25. 005,  2018
2017
Off-diagonal expansion quantum monte carlo
Tameem Albash, Gene Wagenbreth, Itay Hen
Physical Review E 96 (6), 063309,  2017
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Thermalization, freeze-out, and noise: Deciphering experimental quantum annealers
Jeffrey Marshall, Eleanor G Rieffel, Itay Hen
Physical Review Applied 8 (6), 064025,  2017
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Temperature scaling law for quantum annealing optimizers
Tameem Albash, Victor Martin-Mayor, Itay Hen
Physical review letters 119 (11), 110502,  2017
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Solving spin glasses with optimized trees of clustered spins
Itay Hen
Physical Review E 96 (2), 022105,  2017
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Realizable quantum adiabatic search
Itay Hen
Europhysics Letters 118 (3), 30003,  2017
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Advantages of unfair quantum ground-state sampling
Brian Hu Zhang, Gene Wagenbreth, Victor Martin-Mayor, Itay Hen
Scientific reports 7 (1), 1044,  2017
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Thermalization, freeze-out and J-chaos: deciphering experimental quantum annealers
Itay Hen, Jeffrey Marshall, Eleanor Rieffel
APS March Meeting Abstracts 2017, A51. 003,  2017
2016
The Fair in Unfair Quantum Ground-state Sampling
Itay Hen, Victor Martin-Mayor, Brian Zhang
AGU Fall Meeting Abstracts 2016, IN11D-1639,  2016
Energetic cost of superadiabatic quantum computation
Ivan B Coulamy, Alan C Santos, Itay Hen, Marcelo S Sarandy
Frontiers in ICT 3, 19,  2016
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Practical engineering of hard spin-glass instances
Jeffrey Marshall, Victor Martin-Mayor, Itay Hen
Physical review A 94 (1), 012320,  2016
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Driver Hamiltonians for constrained optimization in quantum annealing
Itay Hen, Marcelo S Sarandy
Physical Review A 93 (6), 062312,  2016
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Quantum annealing for constrained optimization
Itay Hen, Federico M Spedalieri
Physical Review Applied 5 (3), 034007,  2016
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Optimization Via Open System Quantum Annealing
Sergio Boixo, Robert Lucas, Daniel Lidar, Itay Hen, Greg Ver Steeg, University of Southern California Los Angeles United States
2016
2015
Unraveling quantum annealers using classical hardness
Victor Martin-Mayor, Itay Hen
Scientific reports 5 (1), 15324,  2015
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Probing for quantum speedup in spin-glass problems with planted solutions
Itay Hen, Joshua Job, Tameem Albash, Troels F Rønnow, Matthias Troyer, Daniel A Lidar
Physical Review A 92 (4), 042325,  2015
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Quantum annealing correction with minor embedding
Walter Vinci, Tameem Albash, Gerardo Paz-Silva, Itay Hen, Daniel A Lidar
Physical Review A 92 (4), 042310,  2015
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Fidelity-optimized quantum state estimation
Amir Kalev, Itay Hen
New Journal of Physics 17 (9), 093008,  2015
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Numerical Studies of the Quantum Adiabatic Algorithm
AP Young, Itay Hen
Journal of Physics: Conference Series 640 (1), 012038,  2015
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Reexamination of the evidence for entanglement in the D-Wave processor
Tameem Albash, Itay Hen, Federico M Spedalieri, Daniel A Lidar
arXiv preprint arXiv:1506.03539,  2015
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Benchmarking using Frustrated Ising Problems with Planted Solutions
Joshua Job, Itay Hen, Tameem Albash, Matthias Troyer, Daniel Lidar
Bulletin of the American Physical Society 60,  2015
Role of Classical Hardness for Quantum Annealers
Itay Hen, Victor Martin-Mayor
Bulletin of the American Physical Society 60,  2015
Reproducing the D-Wave Entanglement Results in Candidate Models
Tameem Albash, Itay Hen, Federico Spedalieri, Daniel Lidar
APS March Meeting Abstracts 2015, H1. 095,  2015
Quantum gates with controlled adiabatic evolutions
Itay Hen
Physical Review A 91 (2), 022309,  2015
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Performance of the quantum adiabatic algorithm on constraint satisfaction and spin glass problems
I Hen, AP Young
The European Physical Journal Special Topics 224 (1), 63-73,  2015
2014
Phase transitions in planning problems: design and analysis of parameterized families of hard planning problems
Itay Hen, Eleanor G Rieffel, Minh Do, Davide Venturelli
28th AIAA Conference on Artificial Intelligence,  2014
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Fourier-transforming with quantum annealers
Itay Hen
Frontiers in Physics 2, 44,  2014
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Parametrized families of hard planning problems from phase transitions
Eleanor Rieffel, Davide Venturelli, Minh Do, Itay Hen, Jeremy Frank
Proceedings of the AAAI Conference on Artificial Intelligence 28 (1),  2014
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How fast can quantum annealers count?
Itay Hen
Journal of Physics A: Mathematical and Theoretical 47 (23), 235304,  2014
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Period finding with adiabatic quantum computation
Itay Hen
Europhysics Letters 105 (5), 50005,  2014
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Distinguishing graphs with a quantum annealer using susceptibility measurements
Matthew Wittmann, Itay Hen, AP Young
APS March Meeting Abstracts 2014, J35. 005,  2014
Continuous-time quantum algorithms for unstructured problems
Itay Hen
Journal of Physics A: Mathematical and Theoretical 47 (4), 045305,  2014
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Quantum adiabatic circuits
Itay Hen
arXiv preprint arXiv:1401.5172,  2014
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2013
Complexity of the quantum adiabatic algorithm
Itay Hen
2nd International Workshop on Adiabatic Quantum Computing,  2013
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2012
Performance of the quantum adiabatic algorithm on random instances of two optimization problems on regular hypergraphs
Edward Farhi, David Gosset, Itay Hen, Anders W Sandvik, Peter Shor, A Peter Young, Francesco Zamponi
Physical Review A—Atomic, Molecular, and Optical Physics 86 (5), 052334,  2012
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Solving the graph-isomorphism problem with a quantum annealer
Itay Hen, AP Young
Physical Review A—Atomic, Molecular, and Optical Physics 86 (4), 042310,  2012
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Excitation gap from optimized correlation functions in quantum Monte Carlo simulations
Itay Hen
Physical Review E—Statistical, Nonlinear, and Soft Matter Physics 85 (3 …,  2012
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Complexity of the Quantum Adiabatic Algorithm
Itay Hen, AP Young
APS March Meeting Abstracts 2012, T30. 014,  2012
2011
Exponential complexity of the quantum adiabatic algorithm for certain satisfiability problems
Itay Hen, A Peter Young
Physical Review E—Statistical, Nonlinear, and Soft Matter Physics 84 (6 …,  2011
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Erratum: Collapse and revival oscillations as a probe for the tunneling amplitude in an ultracold Bose gas [Phys. Rev. A 82, 043601 (2010)]
F Alexander Wolf, Itay Hen, Marcos Rigol
Physical Review A—Atomic, Molecular, and Optical Physics 83 (2), 029905,  2011
2010
Analytical and numerical study of trapped strongly correlated bosons in two-and three-dimensional lattices
Itay Hen, Marcos Rigol
Physical Review A—Atomic, Molecular, and Optical Physics 82 (4), 043634,  2010
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Phase diagram of the hardcore Bose-Hubbard model with a superlattice
Itay Hen, M Iskin, Marcos Rigol
APS March Meeting Abstracts 2010, T31. 005,  2010
Phase diagram of the hard-core Bose-Hubbard model on a checkerboard superlattice
Itay Hen, M Iskin, Marcos Rigol
Physical Review B—Condensed Matter and Materials Physics 81 (6), 064503,  2010
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Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Strongly Interacting Atom Lasers in Three-Dimensional Optical Lattices 180401
Itay Hen, Marcos Rigol
Physical Review Letters 105 (18),  2010
Matter waves and collective properties of cold atoms and molecules-Collapse and revival oscillations as a probe for the tunneling amplitude in an ultracold Bose gas (10 pages …
F Alexander Wolf, Itay Hen, Marcos Rigol
PHYSICAL REVIEW A: atomic, molecular, and optical physics 82 (4),  2010
Rotational symmetry breaking in baby Skyrme models
Marek Karliner, Itay Hen
The Multifaceted Skyrmion, 179-213,  2010
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2009
Review of rotational symmetry breaking in baby Skyrme models
Marek Karliner, Itay Hen
arXiv preprint arXiv:0901.1489,  2009
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Superfluid to Mott insulator transition of hardcore bosons in a superlattice
Itay Hen, Marcos Rigol
Physical Review B—Condensed Matter and Materials Physics 80 (13), 134508,  2009
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Lattice structure of baby skyrmions
I Hen, Marek Karliner
Theoretical and Mathematical Physics 160, 933-944,  2009
2008
No-broadcasting theorem and its classical counterpart
Amir Kalev, Itay Hen
Physical review letters 100 (21), 210502,  2008
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Equation of Motion for the Quantum Characteristic Functions
Itay Hen, Amir Kalev
arXiv preprint arXiv:0803.0108,  2008
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Hexagonal structure of baby Skyrmion lattices
Itay Hen, Marek Karliner
Physical Review D—Particles, Fields, Gravitation, and Cosmology 77 (5), 054009,  2008
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Baby skyrmions on the two-sphere
Itay Hen, Marek Karliner
Physical Review E—Statistical, Nonlinear, and Soft Matter Physics 77 (3 …,  2008
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Spontaneous Breaking of Rotational Symmetry in Rotating Solitons
Itay Hen, Marek Karliner
2008
Rotational symmetry breaking in baby Skyrme models
Itay Hen, Marek Karliner
Nonlinearity 21 (3), 399,  2008
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2007
The No-Cloning Theorem and its Classical Counterpart
A Kalev, I Hen
2007
Classical States and Their Quantum Correspondence
I Hen, A Kalev
arXiv preprint quant-ph/0701015,  2007
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