Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
SpacePulse: Combining Parameterized Pulses and Contextual Subspace for More Practical VQE
Zhiding Liang, Zhixin Song, Jinglei Cheng +5 more·Nov 29, 2023
In this paper, we explore the integration of parameterized quantum pulses with the contextual subspace method. The advent of parameterized quantum pulses marks a transition from traditional quantum gates to a more flexible and efficient approach to q...
Quantum circuit synthesis via a random combinatorial search
S. Ashhab, F. Yoshihara, Miwako Tsuji +2 more·Nov 29, 2023
We use a random search technique to find quantum gate sequences that implement perfect quantum state preparation or unitary operator synthesis with arbitrary targets. This approach is based on the recent discovery that there is a large multiplicity o...
Adaptive circuit learning of born machine: towards realization of amplitude embedding and quantum data loading
Chun-Tse Li, Hao-Chung Cheng·Nov 29, 2023
Quantum data loading plays a central role in quantum algorithms and quantum information processing. Many quantum algorithms hinge on the ability to prepare arbitrary superposition states as a subroutine, with claims of exponential speedups often pred...
Transformer-QEC: Quantum Error Correction Code Decoding with Transferable Transformers
Hanrui Wang, Pengyu Liu, K. Shao +5 more·Nov 27, 2023
Quantum computing has the potential to solve problems that are intractable for classical systems, yet the high error rates in contemporary quantum devices often exceed tolerable limits for useful algorithm execution. Quantum Error Correction (QEC) mi...
Mapping quantum circuits to shallow-depth measurement patterns based on graph states
Thierry N. Kaldenbach, Matthias Heller·Nov 27, 2023
The paradigm of measurement-based quantum computing (MBQC) starts from a highly entangled resource state on which unitary operations are executed through adaptive measurements and corrections ensuring determinism. This is set in contrast to the more ...
RobustState: Boosting Fidelity of Quantum State Preparation via Noise-Aware Variational Training
Hanrui Wang, Yilian Liu, Pengyu Liu +10 more·Nov 27, 2023
Quantum state preparation, a crucial subroutine in quantum computing, involves generating a target quantum state from initialized qubits. Arbitrary state preparation algorithms can be broadly categorized into arithmetic decomposition (AD) and variati...
Toward a Mølmer Sørensen gate with .9999 fidelity
Reinhold Blümel, A. Maksymov, Ming Li·Nov 27, 2023
Realistic fault-tolerant quantum computing at reasonable overhead requires two-qubit gates with the highest possible fidelity. Typically, an infidelity of ≲10−4 is recommended in the literature. Focusing on the phase-sensitive architecture used in la...
Q-Pilot: Field Programmable Qubit Array Compilation with Flying Ancillas
Hanrui Wang, Daniel Bochen Tan, Pengyu Liu +4 more·Nov 26, 2023
Neutral atom arrays, particularly the reconfigurable field programmable qubit arrays (FPQA) with atom movement, show strong promise for quantum computing. FPQA has a dynamic qubit connectivity, facilitating cost-effective execution of long-range gate...
Atomique: A Quantum Compiler for Reconfigurable Neutral Atom Arrays
Hanrui Wang, Pengyu Liu, Daniel Bochen Tan +6 more·Nov 25, 2023
The neutral atom array has gained prominence in quantum computing for its scalability and operation fidelity. Previous works focus on fixed atom arrays (FAAs) that require extensive SWAP operations for long-range interactions. This work explores a no...
Hybrid Circuit Mapping: Leveraging the Full Spectrum of Computational Capabilities of Neutral Atom Quantum Computers
Ludwig Schmid, Sunghye Park, Robert Wille·Nov 23, 2023
Quantum computing based on Neutral Atoms (NAs) provides a wide range of computational capabilities, encompassing high-fidelity long-range interactions with native multi-qubit gates and the ability to shuttle arrays of qubits. While, previously, these...
Universal Quantum Computation via Superposed Orders of Single-Qubit Gates
Kyrylo Simonov, Marcello Caleffi, Jessica Illiano +2 more·Nov 22, 2023
Superposed orders of quantum channels have already been proved - both theoretically and experimentally - to enable unparalleled opportunities in the quantum communication domain. As a matter of fact, superposition of orders can be exploited within th...
Explicit error-correction scheme and code distance for bosonic codes with rotational symmetry
Benjamin Marinoff, Miles Bush, Joshua Combes·Nov 22, 2023
Bosonic codes with rotational symmetry are currently one of the best performing quantum error correcting codes. Little is known about error propagation and code distance for these rotation codes in contrast with qubit codes and Bosonic codes with tra...
Qudits for decomposing multiqubit gates and realizing quantum algorithms
E. Kiktenko, Anastasiia S. Nikolaeva, Aleksey K. Fedorov·Nov 20, 2023
The paradigm behind digital quantum computing inherits the idea of using binary information processing. Nature in fact gives much more rich structures of physical objects that can be used for encoding information, which is especially interesting in t...
An Efficient Quantum Circuit Construction Method for Mutually Unbiased Bases in $n$-Qubit Systems
Wang Yu, Dongsheng Wu·Nov 20, 2023
Mutually unbiased bases (MUBs) play a crucial role in numerous applications within quantum information science, such as quantum state tomography, error correction, entanglement detection, and quantum cryptography. Utilizing \(2^n + 1\) MUB circuits p...
Simulating photonic devices with noisy optical elements
Michele Vischi, Giovanni Di Bartolomeo, Massimiliano Proietti +4 more·Nov 17, 2023
Quantum computers are inherently affected by noise. While in the long term, error correction codes will account for noise at the cost of increasing physical qubits, in the near term, the performance of any quantum algorithm should be tested and simul...
Fast algorithms for classical specifications of stabiliser states and Clifford gates
Nadish de Silva, Wilfred Salmon, Ming Yin·Nov 17, 2023
The stabiliser formalism plays a central role in quantum computing, error correction, and fault tolerance. Conversions between and verifications of different specifications of stabiliser states and Clifford gates are important components of many clas...
On the Pauli Spectrum of QAC0
Shivam Nadimpalli, Natalie Parham, F. Vasconcelos +1 more·Nov 16, 2023
The circuit class QAC0 was introduced by Moore (1999) as a model for constant depth quantum circuits where the gate set includes many-qubit Toffoli gates. Proving lower bounds against such circuits is a longstanding challenge in quantum circuit compl...
Entangling gates on degenerate spin qubits dressed by a global field
I. Hansen, A. Seedhouse, S. Serrano +12 more·Nov 16, 2023
Semiconductor spin qubits represent a promising platform for future large-scale quantum computers owing to their excellent qubit performance, as well as the ability to leverage the mature semiconductor manufacturing industry for scaling up. Individua...
QuantumEyes: Towards Better Interpretability of Quantum Circuits
Shaolun Ruan, Qian-Guo Guan, Paul Griffin +2 more·Nov 14, 2023
Quantum computing offers significant speedup compared to classical computing, which has led to a growing interest among users in learning and applying quantum computing across various applications. However, quantum circuits, which are fundamental for...
Circuit-noise-resilient virtual distillation
Xiao-Yue Xu, Chen Ding, Shuo Zhang +2 more·Nov 14, 2023
Quantum error mitigation (QEM) is vital for improving quantum algorithms’ accuracy on noisy near-term devices. A typical QEM method, called Virtual Distillation (VD), can suffer from imperfect implementation, potentially leading to worse outcomes tha...