Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,007 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum Codes from Twisted Unitary t-Groups.
Eric Kubischta, Ian Teixeira·Feb 2, 2024
We introduce twisted unitary t-groups, a generalization of unitary t-groups under a twisting by an irreducible representation. We then apply representation theoretic methods to the Knill-Laflamme error correction conditions to show that twisted unita...
Hardware Trojans in Quantum Circuits, Their Impacts, and Defense
Rupshali Roy, Subrata Das, Swaroop Ghosh·Feb 2, 2024
The reliability of the outcome of a quantum circuit in near-term noisy quantum computers depends on the gate count and depth for a given problem. Circuits with a short depth and lower gate count can yield the correct solution more often than the vari...
Quantum simulation of Fermi-Hubbard model based on transmon qudit interaction
A. Vezvaee, Nathan Earnest-Noble, K. Najafi·Feb 2, 2024
The Fermi-Hubbard model, a fundamental framework for studying strongly correlated phenomena could significantly benefit from quantum simulations when exploring non-trivial settings. However, simulating this problem requires twice as many qubits as th...
A study of chaos and randomness in quantum systems
PG Sreeram·Feb 1, 2024
How classical chaos emerges from the underlying quantum world is a fundamental problem in physics. The origin of this question is in the correspondence principle. Classical chaos arises due to non-linear dynamics, whereas quantum mechanics, driven by...
Resource-efficient loss-aware photonic graph state preparation using atomic emitters
Eneet Kaur, A. Patil, Saikat Guha·Feb 1, 2024
Multi-qubit entangled photonic graph states are an important ingredient for all-photonic quantum computing, repeaters and networking. Preparing them using probabilistic stitching of single photons using linear optics presents a formidable resource ch...
Spatio-Temporal Characterization of Qubit Routing in Connectivity-Constrained Quantum Processors
Sahar Ben Rached, C. G. Almudéver, E. Alarcon +1 more·Feb 1, 2024
Designing efficient quantum processor topologies is pivotal for advancing scalable quantum computing architectures. The communication overhead, a critical factor affecting the execution fidelity of quantum circuits, arises from inevitable qubit routi...
Scattering wave packets of hadrons in gauge theories: Preparation on a quantum computer
Z. Davoudi, Chung-Chun Hsieh, Saurabh V. Kadam·Feb 1, 2024
Quantum simulation holds promise of enabling a complete description of high-energy scattering processes rooted in gauge theories of the Standard Model. A first step in such simulations is preparation of interacting hadronic wave packets. To create th...
Enhancing Grover’s search algorithm: a modified approach to increase the probability of good states
Ismael Abdulrahman·Jan 31, 2024
This article introduces an enhancement to the Grover search algorithm to speed up computing the probability of finding good states. It suggests incorporating a rotation phase angle determined mathematically from the derivative of the model during the...
Robust error accumulation suppression for quantum circuits
Tatsuki Odake, Philip Taranto, Nobuyuki Yoshioka +4 more·Jan 30, 2024
We present a \textit{robust error accumulation suppression} (\textbf{REAS}) technique to manage errors in quantum computers. Our method reduces the accumulation of errors in any quantum circuit composed of single- or two-qubit gates expressed as $e^{...
Quantum Circuit Mapping for Universal and Scalable Computing in MZI-based Integrated Photonics
Y. Kwon, Alessio Baldazzi, Lorenzo Pavesi +1 more·Jan 30, 2024
Linear optical quantum computing (LOQC) offers a quantum computation paradigm based on well-established and robust technology and flexible environmental conditions following DiVincenzo's criteria. Within this framework, integrated photonics can be ut...
A Thorough Study of State Leakage Mitigation in Quantum Computing with One-Time Pad
Chuan Xu, Jamie Sikora, Jakub Szefer·Jan 28, 2024
The ability for users to access quantum computers through the cloud has increased rapidly in recent years. Despite still being Noisy Intermediate-Scale Quantum (NISQ) machines, modern quantum computers are now being actively employed for research and...
Non-parametric Greedy Optimization of Parametric Quantum Circuits
Koustubh Phalak, Swaroop Ghosh·Jan 27, 2024
The use of Quantum Neural Networks (QNN) that are analogous to classical neural networks, has greatly increased in the past decade owing to the growing interest in the field of Quantum Machine Learning (QML). A QNN consists of three major components:...
Quantum types: going beyond qubits and quantum gates
Tamás Varga, Yaiza Aragonés-Soria, Manuel Oriol·Jan 26, 2024
Quantum computing is a growing field with significant potential applications. Learning how to code quantum programs means understanding how qubits work and learning to use quantum gates. This is analogous to creating classical algorithms using logic ...
Local Hamiltonian decomposition and classical simulation of parametrized quantum circuits
Bibhas Adhikari, Aryan Jha·Jan 24, 2024
In this paper we develop a classical algorithm of complexity $O(K \, 2^n)$ to simulate parametrized quantum circuits (PQCs) of $n$ qubits, where $K$ is the total number of one-qubit and two-qubit control gates. The algorithm is developed by finding $...
Optimal compilation of parametrised quantum circuits
J. Wetering, Richie Yeung, Tuomas Laakkonen +1 more·Jan 23, 2024
Parametrised quantum circuits contain phase gates whose phase is determined by a classical algorithm prior to running the circuit on a quantum device. Such circuits are used in variational algorithms like QAOA and VQE. In order for these algorithms t...
A multiple-circuit approach to quantum resource reduction with application to the quantum lattice Boltzmann method
Melody Lee, Zhixin Song, Sriharsha Kocherla +3 more·Jan 20, 2024
This work proposes a multi-circuit quantum lattice Boltzmann method (QLBM) algorithm that leverages parallel quantum computing to reduce quantum resource requirements. Computational fluid dynamics (CFD) simulations often entail a large computational ...
Coherent Control of the Fine-Structure Qubit in a Single Alkaline-Earth Atom.
Govind Unnikrishnan, Philipp Ilzhofer, Achim Scholz +10 more·Jan 19, 2024
We report on the first realization of a novel neutral atom qubit encoded in the spin-orbit coupled metastable states ^{3}P_{0} and ^{3}P_{2} of a single ^{88}Sr atom trapped in an optical tweezer. Raman coupling of the qubit states promises rapid sin...
Digital-Analog Quantum Computing and Algorithms
Ana Martin·Jan 19, 2024
This Thesis delves into the development and implementation of quantum algorithms using the digital-analog quantum computing (DAQC) paradigm. It provides a comparative analysis of the performance of DAQC versus traditional digital approaches, particul...
Qadence: a differentiable interface for digital-analog programs
Dominik Seitz, Niklas Heim, João P. Moutinho +9 more·Jan 18, 2024
Digital-analog quantum computing (DAQC) is an alternative paradigm for universal quantum computation combining digital single-qubit gates with global analog operations acting on a register of interacting qubits. Currently, no available open-source so...
LDPC-cat codes for low-overhead quantum computing in 2D
Diego Ruiz, Jérémie Guillaud, Anthony Leverrier +2 more·Jan 17, 2024
The main obstacle to large scale quantum computing are the errors present in every physical qubit realization. Correcting these errors requires a large number of additional qubits. Two main avenues to reduce this overhead are (i) low-density parity c...