Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,010 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum SWAP gate realized with CZ and iSWAP gates in a superconducting architecture
Christian Križan, Janka Bizn'arov'a, Liangyu Chen +19 more·Dec 19, 2024
It is advantageous for any quantum processor to support different classes of two-qubit quantum logic gates when compiling quantum circuits, a property that is typically not present in existing platforms. In particular, access to a gate set that inclu...
Short two-qubit pulse sequences for exchange-only spin qubits in 2D layouts
Jason Chadwick, G. Guerreschi, F. Luthi +8 more·Dec 19, 2024
Exchange-only (EO) spin qubits in quantum dots offer an expansive design landscape for architecting scalable device layouts. The study of two-EO-qubit operations, which involve six electrons in six quantum dots, has so far been limited to a small num...
Eigenstate Preparation on Quantum Computers
J. Bonitati·Dec 19, 2024
This thesis investigates quantum algorithms for eigenstate preparation, with a focus on solving eigenvalue problems such as the Schrodinger equation by utilizing near-term quantum computing devices. These problems are ubiquitous in several scientific...
Quantum Homogenization as a Quantum Steady State Protocol on NISQ Hardware
Alexander Y. Yosifov, Aditya Iyer, Daniel Ebler +1 more·Dec 19, 2024
Quantum homogenization is a reservoir-based quantum state approximation protocol, which has been successfully implemented in state transformation on quantum hardware. In this work we move beyond that and propose the homogenization as a novel platform...
Universal Quantum Computation via Scalable Measurement-Free Error Correction
Stefano Veroni, A. Paler, G. Giudice·Dec 19, 2024
We show that universal quantum computation can be concretely made fault-tolerant without mid-circuit measurements. To this end, we introduce a measurement-free deformation protocol of the Bacon-Shor code to realize a logical gate. Combined with a f...
Scaling and logic in the colour code on a superconducting quantum processor
N. Lacroix, A. Bourassa, F. Heras +212 more·Dec 18, 2024
Quantum error correction1, 2, 3–4 is essential for bridging the gap between the error rates of physical devices and the extremely low error rates required for quantum algorithms. Recent error-correction demonstrations on superconducting processors5, ...
Demonstrating dynamic surface codes
A. Eickbusch, Matthew J. McEwen, V. Sivak +204 more·Dec 18, 2024
A remarkable characteristic of quantum computing is the potential for reliable computation despite faulty qubits. This can be achieved through quantum error correction, which is typically implemented by repeatedly applying static syndrome checks, per...
Optimizing quantum transformation matrices: Block decomposition approach for efficient gate reduction
Kin Man Lai, Xin Wang·Dec 18, 2024
This paper introduces an algorithm designed to approximate quantum transformation matrix with a restricted number of gates by using the block decomposition technique. Addressing challenges posed by numerous gates in handling large qubit transformatio...
Reducing QUBO Density by Factoring out Semi-Symmetries
Jonas Nusslein, Leo Sunkel, Jonas Stein +6 more·Dec 18, 2024
Quantum Approximate Optimization Algorithm (QAOA) and Quantum Annealing are prominent approaches for solving combinatorial optimization problems, such as those formulated as Quadratic Unconstrained Binary Optimization (QUBO). These algorithms aim to ...
Two-qubit gate protocols with microwave-dressed Rydberg ions in a linear Paul trap
Joseph W. P. Wilkinson, Katrin Bolsmann, Thiago L. M. Guedes +2 more·Dec 18, 2024
Ultracold trapped atomic ions excited into highly energetic Rydberg states constitute a promising platform for scalable quantum information processing. Elementary building blocks for such tasks are high-fidelity and sufficiently fast entangling two-q...
The Jacobi Factoring Circuit: Quantum Factoring with Near-Linear Gates and Sublinear Space and Depth
Gregory D. Kahanamoku-Meyer, Seyoon Ragavan, Vinod Vaikuntanathan +1 more·Dec 17, 2024
We present a compact quantum circuit for factoring a large class of integers, including some whose classical hardness is expected to be equivalent to RSA (but not including RSA integers themselves). Most notably, we factor n-bit integers of the form ...
End-to-end switchless architecture for fault-tolerant photonic quantum computing
Paul Renault, Patrick Yard, Raphael C. Pooser +2 more·Dec 17, 2024
Photonics represents one of the most promising approaches to large-scale quantum computation with millions of qubits and billions of gates, owing to the potential for room-temperature operation, high clock speeds, miniaturization of photonic circuits...
Modeling quantum volume using randomized benchmarking of Room-Temperature NV center quantum registers
Tom Jäger, MinSik Kwon, M. Keller +9 more·Dec 17, 2024
Accurately estimating the performance of quantum hardware is crucial for comparing different platforms and predicting the performance and feasibility of quantum algorithms and applications. In this paper, we tackle the problem of benchmarking a quant...
Conveyor-belt superconducting quantum computer
Francesco Cioni, Roberto Menta, Riccardo Aiudi +2 more·Dec 16, 2024
The processing unit of a solid-state quantum computer consists in an array of coupled qubits, each locally driven with on-chip microwave lines that route carefully-engineered control signals to the qubits in order to perform logical operations. This ...
Snakes and Ladders: Adapting the Surface Code to Defects
Catherine Leroux, Sophia F. Lin, P. Bienias +4 more·Dec 16, 2024
One of the critical challenges solid-state quantum processors face is the presence of fabrication imperfections and two-level systems, which render certain qubits and gates either inoperable or much noisier than tolerable by quantum error-correction ...
Fast single-qubit gates for continuous dynamically decoupled systems
M. Senatore, Daniel Campbell, James A. Williams +1 more·Dec 16, 2024
Environmental noise that couples longitudinally to a quantum system dephases that system and can limit its coherence lifetime. Performance using quantum superposition in clocks, information processors, communication networks, and sensors depends on c...
Efficient Layered New Bit-Flipping QC-MDPC Decoder for BIKE Post-Quantum Cryptography
Jiaxuan Cai, Xinmiao Zhang·Dec 16, 2024
The medium-density parity-check (MDPC) code-based Bit Flipping Key Encapsulation (BIKE) mechanism remains a candidate for post-quantum cryptography standardization. The latest version utilizes a new bit-flipping (BF) decoding algorithm, which decides...
Density Matrix Renormalization Group Study of Domain Wall Qubits
G. Qu, Ji Zou, Daniel Loss +1 more·Dec 16, 2024
Nanoscale topological spin textures in magnetic systems are emerging as promising candidates for scalable quantum architectures. Despite their potential as qubits, previous studies have been limited to semiclassical approaches, leaving a critical gap...
Establishing a New Benchmark in Quantum Computational Advantage with 105-qubit Zuchongzhi 3.0 Processor.
Dongxin Gao, D. Fan, C. Zha +155 more·Dec 16, 2024
In the relentless pursuit of quantum computational advantage, we present a significant advancement with the development of Zuchongzhi 3.0. This superconducting quantum computer prototype, comprising 105 qubits, achieves high operational fidelities, w...
A Practical Quantum Hoare Logic with Classical Variables, I
Mingsheng Ying·Dec 13, 2024
In this paper, we present a Hoare-style logic for reasoning about quantum programs with classical variables. Our approach offers several improvements over previous work: (1) Enhanced expressivity of the programming language: Our logic applies to quan...