Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
Detecting Violations of Differential Privacy for Quantum Algorithms
J. Guan, Wang Fang, Mingyu Huang +1 more·Sep 9, 2023
Quantum algorithms for solving a wide range of practical problems have been proposed in the last ten years, such as data search and analysis, product recommendation, and credit scoring. The concern about privacy and other ethical issues in quantum co...
A quantum approach for digital signal processing
Alok Shukla, P. Vedula·Sep 9, 2023
We propose a novel quantum approach to signal processing, including a quantum algorithm for low-pass and high-pass filtering, based on the sequency-ordered Walsh–Hadamard transform. We present quantum circuits for performing the sequency-ordered Wals...
Physics-informed neural networks for an optimal counterdiabatic quantum computation
Antonio Ferrer-S'anchez, Carlos Flores-Garrigos, C. Hernani-Morales +7 more·Sep 8, 2023
A novel methodology that leverages physics-informed neural networks to optimize quantum circuits in systems with NQ qubits by addressing the counterdiabatic (CD) protocol is introduced. The primary purpose is to employ physics-inspired deep learning ...
Boltzmann sampling with quantum annealers via fast Stein correction
Ryosuke Shibukawa, Ryo Tamura, Koji Tsuda·Sep 8, 2023
Despite the attempts to apply a quantum annealer to Boltzmann sampling, it is still impossible to perform accurate sampling at arbitrary temperatures. Conventional distribution correction methods such as importance sampling and resampling cannot be a...
Deformed Fredkin model for the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>ν</mml:mi><mml:mo>=</mml:mo><mml:mn>5</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math> Moore-Read state on thin cylinders
Cristian Voinea, Songyang Pu, A. Kirmani +3 more·Sep 8, 2023
We propose a frustration-free model for the Moore-Read quantum Hall state on sufficiently thin cylinders with circumferences $\lesssim 7$ magnetic lengths. While the Moore-Read Hamiltonian involves complicated long-range interactions between triplets...
Quantum signal processing with the one-dimensional quantum Ising model
V. M. Bastidas, S. Zeytinoğlu, Z. M. Rossi +2 more·Sep 8, 2023
Quantum Signal Processing (QSP) has emerged as a promising framework to manipulate and determine properties of quantum systems. QSP not only unifies most existing quantum algorithms but also provides tools to discover new ones. Quantum signal process...
Complete analysis of a realistic fiber-based quantum repeater scheme
A. Kinos, A. Walther, S. Kröll +1 more·Sep 8, 2023
We present a quantum repeater protocol for distributing entanglement over long distances, where a dedicated communication stage enables trial rates not limited by the travel time between repeater nodes. To accomplish this, each node contains several ...
Extremum Seeking Control of Quantum Gates
E. Abbasgholinejad, Haoqin Deng, John Gamble IonQ +4 more·Sep 8, 2023
To be useful for quantum computation, gate operations must be maintained at high fidelities over long periods of time. In addition to decoherence, slow drifts in control hardware leads to inaccurate gates, causing the quality of operation of as-built...
Accurate hyperfine tensors for solid state quantum applications: case of the NV center in diamond
Istv'an Tak'acs, Viktor Iv'ady·Sep 7, 2023
The decoherence of point defect qubits is often governed by the electron spin-nuclear spin hyperfine interaction that can be parameterized by using ab inito calculations in principle. So far most of the theoretical works have focused on the hyperfine...
Low-noise amplifier cryogenic testbed validation in a TaaS (Testing-as-a-Service) framework
Brandon Boiko, E. Zhang, Doug Jorgesen +3 more·Sep 7, 2023
As quantum computers based on superconducting qubit processors scale, cryogenic microwave components in the qubit control and readout chain must be appropriately tested and qualified to ensure consistent and high-fidelity quantum computation. However...
New quantum LDPC codes based on Euclidean Geometry
Ya’nan Feng, Chuchen Tang, Chen‐Ming Bai·Sep 7, 2023
With the advancements in quantum error correction technique, quantum low density parity check (QLDPC) codes have emerged as a promising area in the field of quantum error correction. This paper focuses on the requirement of QLDPC codes based on point...
Quantum Graph-State Synthesis with SAT
Sebastiaan Brand, T. Coopmans, A. Laarman·Sep 7, 2023
In quantum computing and quantum information processing, graph states are a specific type of quantum states which are commonly used in quantum networking and quantum error correction. A recurring problem is finding a transformation from a given sourc...
Single-Electron Occupation in Quantum Dot Arrays at Selectable Plunger Gate Voltage
M. Meyer, Corentin D'eprez, Ilja N Meijer +6 more·Sep 7, 2023
The small footprint of semiconductor qubits is favorable for scalable quantum computing. However, their size also makes them sensitive to their local environment and variations in the gate structure. Currently, each device requires tailored gate volt...
Quantum Cellular Automata for Quantum Error Correction and Density Classification.
Thiago L. M. Guedes, Don Winter, Markus Muller·Sep 7, 2023
Quantum cellular automata are alternative quantum-computing paradigms to quantum Turing machines and quantum circuits. Their working mechanisms are inherently automated, therefore measurement free, and they act in a translation invariant manner on al...
Reduced dynamics in quasi-Hermitian systems
Himanshu Badhani, C. M. Chandrashekar·Sep 6, 2023
Evolutions under non-Hermitian Hamiltonians with unbroken $\mathcal{PT}$ symmetry can be considered unitary under appropriate choices of inner products, facilitated by the so-called metric operator. While it is understood that the choice of the metri...
Surface reconstruction induced anisotropic energy landscape of bismuth monomers and dimers on the Si(001) surface
Haonan Huang, C. Schon, C. Ast·Sep 6, 2023
Spin qubits have attracted tremendous attention in the effort of building quantum computers over the years. Natural atomic scale candidates are group-V dopants in silicon, not only showing ultra-long lifetimes but also being compatible with current s...
Nishimori transition across the error threshold for constant-depth quantum circuits
Edward H. Chen, Guo-Yi Zhu, R. Verresen +9 more·Sep 6, 2023
Quantum computing involves the preparation of entangled states across many qubits. This requires efficient preparation protocols that are stable to noise and gate imperfections. Here we demonstrate the generation of the simplest long-range order—Isin...
Suppression of quasiparticle poisoning in transmon qubits by gap engineering
Plamen Kamenov, Thomas J. DiNapoli, Michael Gershenson +1 more·Sep 6, 2023
The performance of various superconducting devices operating at ultra-low temperatures is impaired by the presence of non-equilibrium quasiparticles. Inelastic quasiparticle (QP) tunneling across Josephson junctions in superconducting qubits results ...
Exploring Post-Quantum Cryptographic Schemes for TLS in 5G Nb-IoT: Feasibility and Recommendations
K. Sabancı, Mumin Cebe·Sep 6, 2023
Narrowband Internet of Things (NB-IoT) is a wireless communication technology that enables a wide range of applications, from smart cities to industrial automation. As a part of the 5G extension, NB-IoT promises to connect billions of devices with lo...
Logical states for fault-tolerant quantum computation with propagating light
Shunya Konno, W. Asavanant, F. Hanamura +14 more·Sep 5, 2023
To harness the potential of a quantum computer, quantum information must be protected against error by encoding it into a logical state that is suitable for quantum error correction. The Gottesman-Kitaev-Preskill (GKP) qubit is a promising candidate ...