Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
AMARETTO: Enabling Efficient Quantum Algorithm Emulation on Low-Tier FPGAs
Christian Conti, Deborah Volpe, Mariagrazia Graziano +2 more·Nov 14, 2024
Researchers and industries are increasingly drawn to quantum computing for its computational potential. However, validating new quantum algorithms is challenging due to the limitations of current quantum devices. Software simulators are time and memo...
Reinforced Disentanglers on Random Unitary Circuits
Ning Bao, Keiichiro Furuya, Gun Suer·Nov 14, 2024
We search for efficient disentanglers on random Clifford circuits of two-qubit gates arranged in a brick-wall pattern, using the proximal policy optimization (PPO) algorithm \cite{schulman2017proximalpolicyoptimizationalgorithms}. Disentanglers are d...
Reducing QAOA Circuit Depth by Factoring out Semi-Symmetries
Jonas Nusslein, Leo Sunkel, Jonas Stein +4 more·Nov 13, 2024
QAOA is a quantum algorithm for solving combinatorial optimization problems. It is capable of searching for the minimizing solution vector $x$ of a QUBO problem $x^TQx$. The number of two-qubit CNOT gates in the QAOA circuit scales linearly in the nu...
Fault-tolerant fermionic quantum computing
A. Schuckert, Eleanor Crane, A. V. Gorshkov +2 more·Nov 13, 2024
Simulating the dynamics of electrons and other fermionic particles in quantum chemistry, materials science, and high-energy physics is one of the most promising applications of fault-tolerant quantum computers. However, the overhead in mapping time e...
A fiber array architecture for atom quantum computing
Xiao Li, Jiayi Hou, Jia-Chao Wang +8 more·Nov 13, 2024
Arrays of single atoms trapped in optical tweezers are increasingly recognized as a promising platform for scalable quantum computing. In both the fault-tolerant and NISQ eras, the ability to individually control qubits is essential for the efficient...
A cat qubit stabilization scheme using a voltage biased Josephson junction
Thiziri Aissaoui, A. Murani, R. Lescanne +1 more·Nov 12, 2024
DC-voltage-biased Josephson junctions have been recently employed in superconducting circuits for Hamiltonian engineering, demonstrating microwave amplification, single photon sources and entangled photon generation. Compared to more conventional app...
Trapped-ion quantum simulation of the Fermi-Hubbard model as a lattice gauge theory using hardware-aware native gates
Dhruv Srinivasan, Alex Beyer, Daiwei Zhu +8 more·Nov 12, 2024
The Fermi-Hubbard model (FHM) is a simple yet rich model of strongly interacting electrons with complex dynamics and a variety of emerging quantum phases. These properties make it a compelling target for digital quantum simulation. Trotterization-bas...
Scalable General Error Mitigation for Quantum Circuits
Philip Dobler, Jannik Pflieger, Fengping Jin +4 more·Nov 12, 2024
In quantum computing, error mitigation is a method to improve the results of an error-prone quantum processor by post-processing them on a classical computer. In this work, we improve the General Error Mitigation (GEM) method for scalability. GEM rel...
Efficient Classical Computation of Single-Qubit Marginal Measurement Probabilities to Simulate Certain Classes of Quantum Algorithms
S. Y. Pradata, ’Anin N. ’Azhiim, Hendry M. Lim +1 more·Nov 11, 2024
Classical simulations of quantum circuits are essential for verifying and benchmarking quantum algorithms, particularly for large circuits, where computational demands increase exponentially with the number of qubits. Among available methods, the cla...
Error-mitigated initialization of surface codes with non-Pauli stabilizers
Zhi-cheng He, Zheng-Yuan Xue·Nov 10, 2024
Quantum error correction represents a significant milestone in large-scale quantum computing, with the surface code being a prominent strategy due to its high error threshold and experimental feasibility. However, it is challenging to implement non-C...
Low Bit‐Flip Rate Probabilistic Error Cancellation
Mathys Rennela, Harold Ollivier·Nov 10, 2024
Noise remains one of the most significant challenges in the development of reliable and scalable quantum processors. While quantum error correction and mitigation techniques offer potential solutions, they are often limited by the substantial overhea...
New random compiler for Hamiltonians via Markov Chains
B. Dubus, Joseph Cunningham, Jérémie Roland·Nov 10, 2024
Many quantum algorithms, such as adiabatic algorithms (e.g. AQC) and phase randomisation, require simulating Hamiltonian evolution. In addition, the simulation of physical systems is an important objective in its own right. In many cases, the Hamilto...
Theory and Experimental Demonstration of Wigner Tomography of Unknown Unitary Quantum Gates
A. Devra, L. V. Damme, F. V. Ende +2 more·Nov 8, 2024
We investigate the tomography of unknown unitary quantum processes within the framework of a finite-dimensional Wigner-type representation. This representation provides a rich visualization of quantum operators by depicting them as shapes assembled a...
Processing and Decoding Rydberg Decay Error with MBQC
Cheng-Cheng Yu, Zi-Han Chen, Yu-Hao Deng +3 more·Nov 7, 2024
Achieving fault-tolerant quantum computing with neutral atom necessitates careful consideration of the errors inherent to this system. One typical error is the leakage from Rydberg states during the implementation of multi-qubit gates, which may prop...
Quantum benchmarking of high-fidelity noise-biased operations on a detuned Kerr-cat qubit.
Bingcheng Qing, Ahmed Hajr, Ke Wang +19 more·Nov 7, 2024
Ubiquitous noise sources in quantum systems remain a key obstacle to building quantum computers, necessitating the use of quantum error correction codes. Recently, error-correcting codes tailored for noise-biased systems have been shown to offer high...
Quantum Advantage with Faulty Oracle
David Rasmussen Lolck, Laura Manvcinska, Manaswi Paraashar·Nov 7, 2024
This paper investigates the impact of noise in the quantum query model, a fundamental framework for quantum algorithms. We focus on the scenario where the oracle is subject to non-unitary (or irreversible) noise, specifically under the \textit{faulty...
Quantum Threshold is Powerful
Daniel Grier, Jackson Morris·Nov 7, 2024
In 2005, H{\o}yer and \v{S}palek showed that constant-depth quantum circuits augmented with multi-qubit Fanout gates are quite powerful, able to compute a wide variety of Boolean functions as well as the quantum Fourier transform. They also asked wha...
Sound certification of memory-bounded quantum computers
Jan Nöller, Nikolai Miklin, Martin Kliesch +1 more·Nov 6, 2024
The rapid advancement of quantum hardware calls for the development of reliable methods to certify its correct functioning. However, existing certification tests often fall short: they either rely on flawless state preparation and measurement or lack...
High-fidelity gates in a transmon using bath engineering for passive leakage reset
Ted Thorbeck, Alexander McDonald, O. Lanes +6 more·Nov 6, 2024
Leakage, the occupation of any state not used in the computation, is one of the of the most devastating errors in quantum error correction. Transmons, the most common superconducting qubits, are weakly anharmonic multilevel systems, and are thus pron...
Programming an Optical Lattice Interferometer
L. M. Seifert, V. Colussi, Michael A. Perlin +2 more·Nov 6, 2024
Programming a quantum device describes the usage of quantum logic gates, agnostic of hardware specifics, to perform a sequence of operations with (typically) a computing or sensing task in mind. Such programs have been executed on digital quantum com...