Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
A Q# Implementation of a Quantum Lookup Table for Quantum Arithmetic Functions
R. Krishnakumar, Mathias Soeken, Martin Roetteler +1 more·Oct 21, 2022
In this paper, we present Q# implementations for arbitrary single-variabled fixed-point arithmetic op-erations for a gate-based quantum computer based on lookup tables (LUTs). In general, this is an inefficent way of implementing a function since the...
Equivalence Checking of Parameterized Quantum Circuits: Verifying the Compilation of Variational Quantum Algorithms
Tom Peham, Lukas Burgholzer, R. Wille·Oct 21, 2022
Variational quantum algorithms have been introduced as a promising class of quantum-classical hybrid algorithms that can already be used with the noisy quantum computing hardware available today by employing parameterized quantum circuits. Considerin...
Measurement-based Quantum Computation as a Tangram Puzzle
A. Patil, Yosef P. Jacobson, D. Towsley +1 more·Oct 20, 2022
Measurement-Based Quantum Computing (MBQC), proposed in 2001 is a model of quantum computing that achieves quantum computation by performing a series of adaptive single-qubit measurements on an entangled cluster state. Our project is aimed at introdu...
Multibody molecular docking on a quantum annealer
Mohit Pandey, Tristan Zaborniak, Hans Melo +2 more·Oct 20, 2022
Molecular docking, which aims to find the most stable interacting configuration of a set of molecules, is of critical importance to drug discovery. Although a considerable number of classical algorithms have been developed to carry out molecular dockin...
An Efficient Quantum Decoder for Prime-Power Fields
Lior Eldar·Oct 20, 2022
We consider a version of the nearest-codeword problem on finite fields $\mathbb{F}_q$ using the Manhattan distance, an analog of the Hamming metric for non-binary alphabets. Similarly to other lattice related problems, this problem is NP-hard even up...
Universal algorithms for quantum data learning
Marco Fanizza, M. Skotiniotis, J. Calsamiglia +2 more·Oct 20, 2022
Operating quantum sensors and quantum computers would make data in the form of quantum states available for purely quantum processing, opening new avenues for studying physical processes and certifying quantum technologies. In this Perspective, we re...
Doubling the order of approximation via the randomized product formula
Chien-Hung Cho, D. Berry, Min-Hsiu Hsieh·Oct 20, 2022
Randomization has been applied to Hamiltonian simulation in a number of ways to improve the accuracy or efficiency of product formulas. Deterministic product formulas are often constructed in a symmetric way to provide accuracy of even order 2k. We s...
A Study of Scalarisation Techniques for Multi-Objective QUBO Solving
M. Ayodele, R. Allmendinger, Manuel L'opez-Ib'anez +1 more·Oct 20, 2022
In recent years, there has been significant research interest in solving Quadratic Unconstrained Binary Optimisation (QUBO) problems. Physics-inspired optimisation algorithms have been proposed for deriving optimal or sub-optimal solutions to QUBOs. ...
Accelerating equilibrium spin-glass simulations using quantum annealers via generative deep learning
Giuseppe Scriva, Emanuele Costa, B. McNaughton +1 more·Oct 20, 2022
Adiabatic quantum computers, such as the quantum annealers commercialized by D-Wave Systems Inc., are routinely used to tackle combinatorial optimization problems. In this article, we show how to exploit them to accelerate equilibrium Markov chain Mo...
Classical Simulation of Short-Time Quantum Dynamics
D. Wild, Álvaro M. Alhambra·Oct 20, 2022
Recent progress in the development of quantum technologies has enabled the direct investigation of dynamics of increasingly complex quantum many-body systems. This motivates the study of the complexity of classical algorithms for this problem in orde...
Sensitivity of quantum gate fidelity to laser phase and intensity noise
X. Jiang, J. Scott, M. Friesen +1 more·Oct 20, 2022
The fidelity of gate operations on neutral atom qubits is often limited by fluctuations of the laser drive. Here, we quantify the sensitivity of quantum gate fidelities to laser phase and intensity noise. We first develop models to identify features ...
Exponentially tighter bounds on limitations of quantum error mitigation
Yihui Quek, Daniel Stilck França, Sumeet Khatri +2 more·Oct 20, 2022
Quantum error mitigation has been proposed as a means to combat unwanted and unavoidable errors in near-term quantum computing without the heavy resource overheads required by fault-tolerant schemes. Recently, error mitigation has been successfully a...
Noisy Tree Data Structures and Quantum Applications
K. Khadiev, N. Savelyev, M. Ziatdinov·Oct 20, 2022
We suggest a new technique for developing noisy tree data structures. We call it a “walking tree”. As applications of the technique we present a noisy Self-Balanced Binary Search Tree (we use a Red–Black tree as an implementation) and a noisy segment...
Coherence requirements for quantum communication from hybrid circuit dynamics
S. Kelly, U. Poschinger, F. Schmidt-Kaler +2 more·Oct 20, 2022
The coherent superposition of quantum states is an important resource for quantum information processing which distinguishes quantum dynamics and information from their classical counterparts. In this article we determine the coherence requirements t...
Describing Trotterized Time Evolutions on Noisy Quantum Computers via Static Effective Lindbladians
Keith R. Fratus, K. Bark, N. Vogt +4 more·Oct 20, 2022
We consider the extent to which a Trotterized time evolution implemented on a quantum computer is altered by the presence of decoherence. Given a specific set of assumptions regarding the manner in which noise processes acting on such a device can be...
Investigating quantum many-body systems with tensor networks, machine learning and quantum computers
Korbinian Kottmann·Oct 20, 2022
(English) We perform quantum simulation on classical and quantum computers and set up a machine learning framework in which we can map out phase diagrams of known and unknown quantum many-body systems in an unsupervised fashion. The classical simula...
Restoring broken symmetries using oracles
E. Guzman, D. Lacroix·Oct 20, 2022
We present a new method to perform variation after projection in many-body systems on quantum computers that does not require performing explicit projection. The technique employs the notion of “oracle”, generally used in quantum search algorithms. W...
Estimating the Jones polynomial for Ising anyons on noisy quantum computers
C. Self, S. Iblisdir, G. Brennen +1 more·Oct 20, 2022
The evaluation of the Jones polynomial at roots of unity is a paradigmatic problem for quantum computers. In this work we present experimental results obtained from existing noisy quantum computers for special cases of this problem, where it is class...
Efficient inference in the transverse field Ising model
E. Dominguez, H. Kappen·Oct 20, 2022
In this paper we introduce an approximate method to solve the quantum cavity equations for transverse field Ising models. The method relies on a projective approximation of the exact cavity distributions of imaginary time trajectories (paths). A key ...
Classical half-adder using trapped-ion quantum bits: Toward energy-efficient computation
Sagar Silva Pratapsi, P. Huber, Patrick Barthel +3 more·Oct 19, 2022
Reversible computation has been proposed as a future paradigm for energy efficient computation, but so far few implementations have been realized in practice. Quantum circuits, running on quantum computers, are one construct known to be reversible. I...