Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Quantum Algorithms for Estimating Quantum Entropies
Youle Wang, Benchi Zhao, Xin Wang·Mar 4, 2022
The von Neumann and quantum R\'enyi entropies characterize fundamental properties of quantum systems and lead to theoretical and practical applications in many fields. Quantum algorithms for estimating quantum entropies, using a quantum query model t...
Solving nuclear structure problems with the adaptive variational quantum algorithm
A. Romero, J. Engel, Ho Lun Tang +1 more·Mar 3, 2022
We use the Lipkin-Meshkov-Glick (LMG) model and the valence-space nuclear shell model to examine the likely performance of variational quantum eigensolvers in nuclear-structure theory. The LMG model exhibits both a phase transition and spontaneous sy...
Quantum circuit compilation and hybrid computation using Pauli-based computation
F. C. R. Peres, E. Galvão·Mar 3, 2022
Pauli-based computation (PBC) is driven by a sequence of adaptively chosen, non-destructive measurements of Pauli observables. Any quantum circuit written in terms of the Clifford+T gate set and having tT gates can be compiled into a PBC on t qubits....
Quantum reinforcement learning via policy iteration
El Amine Cherrat, Iordanis Kerenidis, A. Prakash·Mar 3, 2022
Quantum computing has shown the potential to substantially speed up machine learning applications, in particular for supervised and unsupervised learning. Reinforcement learning, on the other hand, has become essential for solving many decision-makin...
Post-error Correction for Quantum Annealing Processor Using Reinforcement Learning
Tomasz Śmierzchalski, Lukasz Pawela, Z. Puchała +2 more·Mar 3, 2022
Finding the ground state of the Ising spin-glass is an important and challenging problem (NP-hard, in fact) in condensed matter physics. However, its applications spread far beyond physic due to its deep relation to various combinatorial optimization...
Simulating excited states of the Lipkin model on a quantum computer
Manqoba Q. Hlatshwayo, Yinu Zhang, H. Wibowo +3 more·Mar 3, 2022
We simulate the excited states of the Lipkin model using the recently proposed Quantum Equation of Motion (qEOM) method. The qEOM generalizes the EOM on classical computers and gives access to collective excitations based on quasi-boson operators $\h...
Rydberg Wire Gates for Universal Quantum Computation
Seokho Jeong, Xiao-Feng Shi, Minhyuk Kim +1 more·Mar 3, 2022
Rydberg atom arrays offer flexible geometries of strongly interacting neutral atoms, which are useful for many quantum applications such as quantum simulation and quantum computation. Here, we consider an all-optical gate-based quantum computing sche...
Quantum random walks in coupled photonic ring resonators
R. Adão, Manuel Cano-Garc'ia, J. Nieder +1 more·Mar 3, 2022
Quantum random walks use interference for faster state space exploration, which can be used for algorithmic purposes. Photonic technologies provide a natural platform for many recent experimental demonstrations. Here we analyze quantum random walks i...
A Scalable Approach to Quantum Simulation via Projection-based Embedding
Alexis Ralli, Mike Williams, P. Coveney·Mar 2, 2022
Owing to the computational complexity of electronic structure algorithms running on classical digital computers, the range of molecular systems amenable to simulation remains tightly circumscribed even after many decades of work. Quantum computers ho...
On-demand directional microwave photon emission using waveguide quantum electrodynamics
B. Kannan, Aziza Almanakly, Youngkyu Sung +16 more·Mar 2, 2022
Routing quantum information between non-local computational nodes is a foundation for extensible networks of quantum processors. Quantum information transfer between arbitrary nodes is generally mediated either by photons that propagate between them ...
Is Quantum Advantage the Right Goal for Quantum Machine Learning?
M. Schuld, N. Killoran·Mar 2, 2022
Machine learning is frequently listed among the most promising applications for quantum computing. This is in fact a curious choice: Today's machine learning algorithms are notoriously powerful in practice, but remain theoretically difficult to study...
Quantum jumbled pattern matching
Julio Ju'arez-Xochitemol, E. Ch'avez·Mar 1, 2022
Let $S_1, S_2 \in \Sigma^*$ strings, we say that $S_1$ {\em jumble match} $S_2$ if they are permutations of each other. Given a text $T$ of size $N$ and a string $S \in \Sigma^*$, the problem of \emph{Jumbled Pattern Matching} (JPM) is to determine a...
Influence in completely bounded block-multilinear forms and classical simulation of quantum algorithms
N. Bansal, Makrand Sinha, R. D. Wolf·Mar 1, 2022
The Aaronson-Ambainis conjecture (Theory of Computing '14) says that every low-degree bounded polynomial on the Boolean hypercube has an influential variable. This conjecture, if true, would imply that the acceptance probability of every d-query quan...
Quantum Image Processing
Alok Anand, M. Lyu, P. S. Baweja +1 more·Mar 1, 2022
Image processing is popular in our daily life because of the need to extract essential information from our 3D world, including a variety of applications in widely separated fields like bio-medicine, economics, entertainment, and industry. The nature...
Towards a SAT Encoding for Quantum Circuits: A Journey From Classical Circuits to Clifford Circuits and Beyond
Lucas Berent, Lukas Burgholzer, R. Wille·Mar 1, 2022
Boolean Satisfiability (SAT) techniques are well-established in classical computing where they are used to solve a broad variety of problems, e.g., in the design of classical circuits and systems. Analogous to the classical realm, quantum algorithms ...
How to Approximate any Objective Function via Quadratic Unconstrained Binary Optimization
Thomas Gabor, M. Rosenfeld, Sebastian Feld +1 more·Mar 1, 2022
Quadratic unconstrained binary optimization (QUBO) has become the standard format for optimization using quantum computers, i.e., for both the quantum approximate optimization algorithm (QAOA) and quantum annealing (QA). We present a toolkit of metho...
Signature Correction Attack on Dilithium Signature Scheme
Saad Islam, K. Mus, Richa Singh +2 more·Mar 1, 2022
Motivated by the rise of quantum computers, existing public-key cryptosystems are expected to be replaced by post-quantum schemes in the next decade in billions of devices. To facilitate the transition, NIST is running a standardization process which...
Automated Reconstruction of Bound States in Bilayer Graphene Quantum Dots
J. Bucko, F. Schäfer, F. Herman +5 more·Mar 1, 2022
Bilayer graphene is a nanomaterial that allows for well-defined, separated quantum states to be defined by electrostatic gating and, therefore, provides an attractive platform to construct tunable quantum dots. When a magnetic field perpendicular to ...
Simulation Paths for Quantum Circuit Simulation With Decision Diagrams What to Learn From Tensor Networks, and What Not
Lukas Burgholzer, Alexander Ploier, R. Wille·Mar 1, 2022
Simulating quantum circuits on classical computers is a notoriously hard, yet increasingly important task for the development and testing of quantum algorithms. In order to alleviate this inherent complexity, efficient data structures and methods, su...
Quantum capacities of transducers
Chiao-Hsuan Wang, Fangxin Li, Liang Jiang·Feb 28, 2022
High-performance quantum transducers, which faithfully convert quantum information between disparate physical carriers, are essential in quantum science and technology. Different figures of merit, including efficiency, bandwidth, and added noise, are...