Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Assessing and advancing the potential of quantum computing: A NASA case study
E. Rieffel, A. A. Asanjan, M. Alam +20 more·Jun 1, 2024
Quantum computing is one of the most enticing computational paradigms with the potential to revolutionize diverse areas of future-generation computational systems. While quantum computing hardware has advanced rapidly, from tiny laboratory experiment...
Incompressible Navier-Stokes solve on noisy quantum hardware via a hybrid quantum-classical scheme
Zhixin Song, Robert Deaton, Bryan Gard +1 more·Jun 1, 2024
Partial differential equation solvers are required to solve the Navier-Stokes equations for fluid flow. Recently, algorithms have been proposed to simulate fluid dynamics on quantum computers. Fault-tolerant quantum devices might enable exponential s...
Parallel quantum computing simulations via quantum accelerator platform virtualization
Daniel Claudino, Dmitry I. Lyakh, Alex McCaskey·Jun 1, 2024
Quantum circuit execution is the central task in quantum computation. Due to inherent quantum-mechanical constraints, quantum computing workflows often involve a considerable number of independent measurements over a large set of slightly different q...
Quantum state preparation for multivariate functions
Matthias Rosenkranz, Eric Brunner, Gabriel Marin-Sanchez +5 more·May 31, 2024
A fundamental step of any quantum algorithm is the preparation of qubit registers in a suitable initial state. Often qubit registers represent a discretization of continuous variables and the initial state is defined by a multivariate function. We de...
Quadrupole Coupling of Circular Rydberg Qubits to Inner Shell Excitations.
Moritz Wirth, Christian Holzl, Aaron Gotzelmann +2 more·May 30, 2024
Divalent atoms provide excellent means for advancing control in Rydberg atom-based quantum simulation and computing due to the second optically active valence electron available. Particularly promising in this context are circular Rydberg atoms, for ...
Improving the Fidelity of CNOT Circuits on NISQ Hardware
Dohun Kim, Minyoung Kim, Sarah Meng Li +1 more·May 30, 2024
We introduce an improved CNOT synthesis algorithm that considers nearest-neighbour interactions and CNOT gate error rates in noisy intermediate-scale quantum (NISQ) hardware. Compared to IBM's Qiskit compiler, it improves the fidelity of a synthesize...
Fault-tolerant simulation of Lattice Gauge Theories with gauge covariant codes
L. Spagnoli, A. Roggero, N. Wiebe·May 29, 2024
We show in this paper that a strong and easy connection exists between quantum error correction and Lattice Gauge Theories (LGT) by using the Gauge symmetry to construct an efficient error-correcting code for Abelian LGTs. We identify the logical ope...
Efficient Optimal Control of Open Quantum Systems
Wenhao He, Tongyang Li, Xiantao Li +3 more·May 29, 2024
The optimal control problem for open quantum systems can be formulated as a time-dependent Lindbladian that is parameterized by a number of time-dependent control variables. Given an observable and an initial state, the goal is to tune the control va...
Efficiently manipulating Pauli strings with PauliArray
M. Dion, Tania Belabbas, Nolan Bastien·May 29, 2024
Pauli matrices and Pauli strings are widely used in quantum computing. These mathematical objects are useful to describe or manipulate the quantum state of qubits. They offer a convenient basis to express operators and observables used in different p...
Decoherence of solid-state spin qubits: a computational perspective
M. Onizhuk, Giulia Galli·May 28, 2024
The usefulness of solid-state spins in quantum technologies depends on how long they can remain in a coherent superposition of quantum states. This Colloquium discusses how first-principles simulations can predict spin dynamics for different types of...
Symmetry-protection Zeno phase transition in monitored lattice gauge theories
Matteo M. Wauters, Edoardo Ballini, A. Biella +1 more·May 28, 2024
Quantum measurements profoundly influence system dynamics. They lead to complex nonequilibrium phenomena like the quantum Zeno effect, and they can be used for mitigating errors in quantum simulations. Such an ability is particularly valuable for lat...
Capturing dynamics and thermodynamics of a three-level quantum heat engine via programmable quantum circuits
Gao-xiang Deng, Zhe He, Yu Liu +2 more·May 28, 2024
This research employs the Kraus representation and Sz.-Nagy dilation theorem to model a three-level quantum heat on quantum circuits, investigating its dynamic evolution and thermodynamic performance. The feasibility of the dynamic model is validated...
The MQT Handbook : A Summary of Design Automation Tools and Software for Quantum Computing
Robert Wille, Lucas Berent, Tobias Forster +10 more·May 27, 2024
Quantum computers are becoming a reality and numerous quantum computing applications with a near-term perspective (e.g., for finance, chemistry, machine learning, and optimization) and with a long-term perspective (e.g., for cryptography or unstructu...
Variational Quantum Framework for Partial Differential Equation Constrained Optimization
Amit Surana, Abeynaya Gnanasekaran·May 26, 2024
We present a novel variational quantum framework for linear partial differential equation (PDE) constrained optimization problems. Such problems arise in many scientific and engineering domains. For instance, in aerodynamics, the PDE constraints are ...
Weaving Complex Graph on Simple Low-Dimensional Qubit Lattices
Yuhang Dang, Shyam Dhamapurkar, Xiao–Long Zhu +3 more·May 25, 2024
In quantum computing, the connectivity of qubits placed on two-dimensional chips limits the scalability and functionality of solid-state quantum computers. This paper presents two approaches to constructing complex quantum networks from simple qubit ...
Parametrization and optimizability of pulse-level variational quantum eigensolvers
Kyle Sherbert, Hisham Amer, S. Economou +2 more·May 24, 2024
In conventional variational quantum eigensolvers (VQEs), trial states are prepared by applying series of parameterized gates to a reference state, with the gate parameters being varied to minimize the energy of the target system. Recognizing that the...
Detecting errors in a quantum network with Pauli checks
Alvin Gonzales, Daniel Dilley, Bikun Li +2 more·May 24, 2024
We apply the quantum error detection scheme Pauli check sandwiching (PCS) to quantum networks by turning it into a distributed multiparty protocol. PCS provides protection on the targeted qubits and generally requires less resource overhead than stan...
Unsupervised Deep Neural Network Approach To Solve Bosonic Systems
Avishek Singh, NIRMAL K. Ganguli·May 24, 2024
The simulation of quantum many-body systems poses a significant challenge in physics due to the exponential scaling of Hilbert space with the number of particles. Traditional methods often struggle with large system sizes and frustrated lattices. In ...
Efficient universal qudit control using emulated spin rotations up to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>d</mml:mi><mml:mo>=</mml:mo><mml:mn>8</mml:mn></mml:mrow></mml:math>
E. Champion, Zihao Wang, R. Parker +1 more·May 24, 2024
Qudits hold great promise for efficient quantum computation and the simulation of high-dimensional quantum systems. Utilizing a local Hilbert space of dimension d>2 is known to speed up certain quantum algorithms relative to their qubit counterparts ...
Synthetic High Angular Momentum Spin Dynamics in a Microwave Oscillator
Saswata Roy, Alen Senanian, Christopher S. Wang +10 more·May 24, 2024
Spins and oscillators are foundational to much of physics and applied sciences. For quantum information, a spin 1/2 exemplifies the most basic unit, a qubit. High angular momentum spins (HAMSs) and harmonic oscillators provide multilevel manifolds wh...