Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Absorption-Emission Codes for Atomic and Molecular Quantum Information Platforms.
Shubham P. Jain, Eric R. Hudson, Wesley C. Campbell +1 more·Nov 21, 2023
Diatomic molecular codes [V. V. Albert, J. P. Covey, and J. Preskill, Robust encoding of a qubit in a molecule, Phys. Rev. X 10, 031050 (2020).PRXHAE2160-330810.1103/PhysRevX.10.031050] are designed to encode quantum information in the orientation of...
Efficient learning of Sparse Pauli Lindblad models for fully connected qubit topology
Jose Este Jaloveckas, M. Nguyen, Lilly Palackal +2 more·Nov 20, 2023
The challenge to achieve practical quantum computing considering current hardware size and gate fidelity is the sensitivity to errors and noise. Recent work has shown that by learning the underlying noise model capturing qubit cross-talk, error mitig...
Selective single- and double-mode quantum-limited amplifier
Abdul Mohamed, Elham Zohari, Jarryd J. Pla +2 more·Nov 20, 2023
A quantum-limited amplifier enables the amplification of weak signals while introducing minimal noise dictated by the principles of quantum mechanics. These amplifiers serve a broad spectrum of applications in quantum computing, including fast and ac...
Nav-Q: quantum deep reinforcement learning for collision-free navigation of self-driving cars
Akash Sinha, A. Macaluso, Matthias Klusch·Nov 20, 2023
The task of collision-free navigation (CFN) of self-driving cars is an NP-hard problem usually tackled using deep reinforcement learning (DRL). While DRL methods have proven to be effective, their implementation requires substantial computing resourc...
Exotic symmetry breaking properties of self-dual fracton spin models
Giovanni Canossa, L. Pollet, M. Martin-Delgado +2 more·Nov 18, 2023
Fracton codes host unconventional topological states of matter and are promising for fault-tolerant quantum computation due to their large coding space and strong resilience against decoherence and noise. In this work, we investigate the ground-state...
NISQ-Compatible Error Correction of Quantum Data Using Modified Dissipative Quantum Neural Networks
Armin Ahmadkhaniha, M. Bathaee·Nov 17, 2023
Using a dissipative quantum neural network (DQNN) accompanied by conjugate layers, we upgrade the performance of the existing quantum auto-encoder (QAE) network as a quantum denoiser of a noisy m-qubit GHZ state. Our new denoising architecture requir...
Simulating photonic devices with noisy optical elements
Michele Vischi, Giovanni Di Bartolomeo, Massimiliano Proietti +4 more·Nov 17, 2023
Quantum computers are inherently affected by noise. While in the long term, error correction codes will account for noise at the cost of increasing physical qubits, in the near term, the performance of any quantum algorithm should be tested and simul...
Variational quantum-algorithm based self-consistent calculations for the two-site DMFT model on noisy quantum computing hardware
J. Ehrlich, D. F. Urban, Christian Elsässer·Nov 17, 2023
Dynamical ean field theory (DMFT) is one of the powerful computational approaches to study electron correlation effects in solid-state materials and molecules. Its practical applicability is, however, limited by the quantity of numerical resources re...
Towards Accurate Quantum Chemical Calculations on Noisy Quantum Computers
Naoki Iijima, Satoshi Imamura, M. Morita +4 more·Nov 16, 2023
Variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm designed for noisy intermediate-scale quantum (NISQ) computers. It is promising for quantum chemical calculations (QCC) because it can calculate the ground-state energy of ...
Hybrid Classical–Quantum Branch-and-Bound Algorithm for Solving Integer Linear Problems
Claudio Sanavio, Edoardo Tignone, Elisa Ercolessi·Nov 16, 2023
Quantum annealers are suited to solve several logistic optimization problems expressed in the QUBO formulation. However, the solutions proposed by the quantum annealers are generally not optimal, as thermal noise and other disturbing effects arise wh...
Observation of the non-Hermitian skin effect and Fermi skin on a digital quantum computer
Ruizhe Shen, Tianqi Chen, Bo Yang +1 more·Nov 16, 2023
Lately, the non-Hermitian skin effect (NHSE) has been demonstrated in various classical metamaterials and even ultracold atomic arrays. Yet, its interplay with many-body dynamics have never been experimentally investigated. Here, we report the observ...
Entangling gates on degenerate spin qubits dressed by a global field
I. Hansen, A. Seedhouse, S. Serrano +12 more·Nov 16, 2023
Semiconductor spin qubits represent a promising platform for future large-scale quantum computers owing to their excellent qubit performance, as well as the ability to leverage the mature semiconductor manufacturing industry for scaling up. Individua...
Accurate and Honest Approximation of Correlated Qubit Noise
Setiawan F., A. Gramolin, E. Matekole +2 more·Nov 15, 2023
Accurate modeling of noise in realistic quantum processors is critical for constructing fault-tolerant quantum computers. While a full simulation of actual noisy quantum circuits provides information about correlated noise among all qubits and is the...
Scattering phase shifts from a quantum computer
Sanket Sharma, Thomas Papenbrock, L. Platter·Nov 15, 2023
We calculate two-body scattering phase shifts on a quantum computer using a leading order short-range effective field theory Hamiltonian. The algorithm combines the variational quantum eigensolver and the quantum subspace expansion. As an example, we...
Circuit-noise-resilient virtual distillation
Xiao-Yue Xu, Chen Ding, Shuo Zhang +2 more·Nov 14, 2023
Quantum error mitigation (QEM) is vital for improving quantum algorithms’ accuracy on noisy near-term devices. A typical QEM method, called Virtual Distillation (VD), can suffer from imperfect implementation, potentially leading to worse outcomes tha...
Building Trust in the Quantum Cloud with Physical Unclonable Functions
Behnam Tonekaboni, P. Gokhale, Kaitlin N. Smith·Nov 13, 2023
As cloud-based quantum computing expands, securing access to quantum hardware is increasingly critical. We present an authentication protocol that leverages intrinsic quantum device properties to construct Quantum Physical Unclonable Functions (Q-PUF...
QudCom: Towards Quantum Compilation for Qudit Systems
Daniel Volya, Prabhat Mishra·Nov 13, 2023
Qudit-based quantum computation offers unique advantages over qubit-based systems in terms of noise mitigation capabilities as well as algorithmic complexity improvements. However, the software ecosystem for multi-state quantum systems is severely li...
Real-time error mitigation for variational optimization on quantum hardware
Matteo Robbiati, Alejandro Sopena, Andrea Papaluca +1 more·Nov 9, 2023
In this work we put forward the inclusion of error mitigation routines in the process of training Variational Quantum Circuit (VQC) models. In detail, we define a Real Time Quantum Error Mitigation (RTQEM) algorithm to assist in fitting functions on ...
Charge qubits based on ultra-thin topological insulator films
Kexin Zhang, H. Lepage, Ying Dong +1 more·Nov 9, 2023
We study how to use the surface states in a Bi2Se3 topological insulator ultra-thin film that are affected by finite size effects for the purpose of quantum computing. We demonstrate that: (i) surface states under the finite size effect can effective...
An introduction to financial option pricing on a qudit-based quantum computer
N. Bornman·Nov 9, 2023
The financial sector is anticipated to be one of the first industries to benefit from the increased computational power of quantum computers, in areas such as portfolio optimisation and risk management to financial derivative pricing. Financial mathe...