Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,003 papers in 12 months (-3% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Shallow unitary decompositions of quantum Fredkin and Toffoli gates for connectivity-aware equivalent circuit averaging
P. M. Q. Cruz, Bruno Murta·May 29, 2023
The controlled-swap and controlled-controlled-not gates are at the heart of the original proposal of reversible classical computation by Fredkin and Toffoli. Their widespread use in quantum computation, both in the implementation of classical logic s...
Actis: A Strictly Local Union-Find Decoder
Tim Chan, Simon C. Benjamin·May 29, 2023
Fault-tolerant quantum computing requires classical hardware to perform the decoding necessary for error correction. The Union–Find decoder is one of the best candidates for this. It has remarkably organic characteristics, involving the growth and me...
A Scalable, Fast and Programmable Neural Decoder for Fault-Tolerant Quantum Computation Using Surface Codes
Mengyu Zhang, Xiangyu Ren, Guanglei Xi +6 more·May 25, 2023
Quantum error-correcting codes (QECCs) can eliminate the negative effects of quantum noise, the major obstacle to the execution of quantum algorithms. However, realizing practical quantum error correction (QEC) requires resolving many challenges to i...
Data-driven quantum dynamical embedding method for long-term prediction on near-term quantum computers
Tai-ping Sun, Zhao-Yun Chen, Cheng Xue +7 more·May 25, 2023
The increasing focus on long-term time series prediction across various fields has been significantly strengthened by advancements in quantum computation. In this paper, we introduce a data-driven method designed for time series prediction with quant...
Extending the computational reach of a superconducting qutrit processor
Noah Goss, Samuele Ferracin, A. Hashim +5 more·May 25, 2023
Quantum computing with qudits is an emerging approach that exploits a larger, more connected computational space, providing advantages for many applications, including quantum simulation and quantum error correction. Nonetheless, qudits are typically...
Stabilization of discrete time-crystalline response on a superconducting quantum computer by increasing the interaction range
Andrea Solfanelli, S. Ruffo, S. Succi +1 more·May 23, 2023
The simulation of complex quantum many-body systems is a promising short-term goal of noisy intermediate-scale quantum (NISQ) devices. However, the limited connectivity of native qubits hinders the implementation of quantum algorithms that require lo...
Error-Mitigated Quantum Routing on Noisy Devices
Wenbo Shi, R. Malaney·May 23, 2023
With sub-threshold quantum error correction on quantum hardware still out of reach, quantum error mitigation methods are currently deemed an attractive option for implementing certain applications on near-term noisy quantum devices. One such applicat...
Variational quantum algorithms on cat qubits
Anne-Solene Bornens, Michel Nowak·May 23, 2023
Variational Quantum Algorithms (VQA) have emerged with a wide variety of applications. One question to ask is either they can efficiently be implemented and executed on existing architectures. Current hardware suffers from uncontrolled noise that can...
Non-Markovian cost function for quantum error mitigation with Dirac Gamma matrices representation
Doyeol Ahn·May 23, 2023
This paper investigates the non-Markovian cost function in quantum error mitigation (QEM) and employs Dirac Gamma matrices to illustrate two-qubit operators, significant in relativistic quantum mechanics. Amid the focus on error reduction in noisy in...
Encoding a magic state with beyond break-even fidelity
R. Gupta, N. Sundaresan, Thomas Alexander +10 more·May 23, 2023
To run large-scale algorithms on a quantum computer, error-correcting codes must be able to perform a fundamental set of operations, called logic gates, while isolating the encoded information from noise1–8. We can complete a universal set of logic g...
Neural-network-designed three-qubit gates robust against charge noise and crosstalk in silicon
David W. Kanaar, J. Kestner·May 22, 2023
Spin qubits in semiconductor quantum dots are a promising platform for quantum computing, however, scaling to large systems is hampered by crosstalk and charge noise. Crosstalk here refers to the unwanted off-resonant rotation of idle qubits during t...
Deep Quantum Neural Networks are Gaussian Process
A. Rad·May 22, 2023
The overparameterization of variational quantum circuits, as a model of Quantum Neural Networks (QNN), not only improves their trainability but also serves as a method for evaluating the property of a given ansatz by investigating their kernel behavi...
Fidelity estimator, randomized benchmarking and ZNE for quantum pulses
Jinglei Cheng, Zhiding Liang, Rui-Yuan Yang +4 more·May 21, 2023
Most previous research focused on designing pulse programs without considering the performance of individual elements or the final fidelity. To evaluate the performance of quantum pulses, it is required to know the noiseless results of the pulses. Ho...
Quantum simulations of SO(5) many-fermion systems using qudits
Marc Illa, C. Robin, M. Savage·May 19, 2023
The structure and dynamics of quantum many-body systems are the result of a delicate interplay between underlying interactions, which leads to intricate entanglement structures. Despite this apparent complexity, symmetries emerge and have long been u...
Noise-adapted recovery circuits for quantum error correction
Debjyoti Biswas, G. Vaidya, Prabha Mandayam·May 18, 2023
Implementing quantum error correction (QEC) protocols is a challenging task in today's era of noisy intermediate-scale quantum devices. We present quantum circuits for a universal, noise-adapted recovery map, often referred to as the Petz map, which ...
Fusion Blossom: Fast MWPM Decoders for QEC
Yuehua Wu, Lin Zhong·May 15, 2023
The Minimum-Weight Perfect Matching (MWPM) decoder is widely used in Quantum Error Correction (QEC) decoding. Despite its high accuracy, existing implementations of the MWPM decoder cannot catch up with quantum hardware, e.g., 1 million measurements ...
Braiding-based quantum control of a Majorana qubit built from quantum dots
P. Boross, Andr'as P'alyi·May 15, 2023
Topology-related ideas might lead to noise-resilient quantum computing. For example, it is expected that the slow spatial exchange (`braiding') of Majorana zero modes in superconductors yields quantum gates that are robust against disorder. Here, we ...
Meta-optimization of resources on quantum computers
I. Mohammad, Matej Pivoluska, Martin Plesch·May 15, 2023
The current state of quantum computing is commonly described as the Noisy Intermediate-Scale Quantum era. Available computers contain a few dozens of qubits and can perform a few dozens of operations before the inevitable noise erases all information...
Errors in heralded circuits for linear optical entanglement generation
Reece D. Shaw, Alex E. Jones, Patrick Yard +1 more·May 15, 2023
The heralded generation of entangled states underpins many photonic quantum technologies. As quantum error correction thresholds are determined by underlying physical noise mechanisms, a detailed and faithful characterization of resource states is re...
Benchmarking the Variational Quantum Eigensolver using different quantum hardware
Amine Bentellis, Andrea Matic-Flierl, C. Mendl +1 more·May 11, 2023
The Variational Quantum Eigensolver (VQE) is a promising quantum algorithm for applications in chemistry within the Noisy Intermediate-Scale Quantum (NISQ) era. The ability for a quantum computer to simulate electronic structures with high accuracy w...