Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Photon-number conserved universal quantum logic employing continuous-time quantum walk on dual-rail qubit arrays
Hao-Yu Guan, Yifei Li, Xiu-Hao Deng·Jan 15, 2025
We demonstrate a synergy between dual-rail qubit encoding and continuous-time quantum walks (CTQW) to realize universal quantum logic in superconducting circuits. Utilizing the photon-number-conserving dynamics of CTQW on dual-rail transmons, which s...
The Clifford hierarchy for one qubit or qudit
Nadish de Silva, Oscar Lautsch·Jan 14, 2025
The Clifford hierarchy is a nested sequence of sets of quantum gates that can be fault-tolerantly performed using gate teleportation within standard quantum error correction schemes. The groups of Pauli and Clifford gates constitute the first and s...
Efficient quantum circuit compilation for near-term quantum advantage
Yuchen Guo, Shuo Yang·Jan 13, 2025
Quantum noise in real-world devices poses a significant challenge in achieving practical quantum advantage, since accurately compiled and executed circuits are typically deep and highly susceptible to decoherence. To facilitate the implementation of ...
Almost Optimal Synthesis of Reversible Function in Qudit Model
Buji Xu, Junhong Nie, Xiaoming Sun·Jan 9, 2025
Quantum oracles are widely adopted in problems, like query oracle in Grover’s algorithm, cipher in quantum cryptanalytic and data encoder in quantum machine learning. Notably, the bit-flip oracle, capable of flipping the state based on a given classi...
Implementation of phase gates using single photons
V. Hizhnyakov·Jan 9, 2025
Quantum computing algorithms using the quantum Fourier transform require repeated use of a phase shift gate. In the case of qubits using optical photons for operation, this gate can be implemented using single-photon beams focused close to the diffra...
Efficient qubit calibration by binary-search Hamiltonian tracking
F. Berritta, Jacob Benestad, Lukas Pahl +14 more·Jan 9, 2025
We present and experimentally implement a real-time protocol for calibrating the frequency of a resonantly driven qubit, achieving exponential scaling in calibration precision with the number of measurements, up to the limit imposed by decoherence. T...
Research on quantum compilation of neutral atom quantum computing platform
Chongyuan Xu·Jan 9, 2025
Quantum compilation is the process of decomposing high-level quantum algorithms or arbitrary unitary operations into quantum circuits composed of a specific set of quantum gates. Neutral atom quantum computing platform is a quantum computing implemen...
Roadmap on atomic-scale semiconductor devices
S. R. Schofield, Andrew J. Fisher, E. Ginossar +47 more·Jan 8, 2025
Spin states in semiconductors provide exceptionally stable and noise-resistant environments for qubits, positioning them as optimal candidates for reliable quantum computing technologies. The proposal to use nuclear and electronic spins of donor atom...
Lattice surgery realized on two distance-three repetition codes with superconducting qubits
Ilya Besedin, Michael Kerschbaum, Jonathan Knoll +12 more·Jan 8, 2025
Quantum error correction is needed for quantum computers to be capable of executing algorithms using hundreds of logical qubits in a fault-tolerant manner. Recent experiments have progressed towards this by demonstrating sufficiently low error rates ...
IQPopt: Fast optimization of instantaneous quantum polynomial circuits in JAX
Erik Recio-Armengol, Joseph Bowles·Jan 8, 2025
IQPopt is a software package designed to optimize large-scale instantaneous quantum polynomial circuits on classical hardware. By exploiting an efficient classical simulation algorithm for expectation value estimation, circuits with thousands of qubi...
Exact Decoding of Repetition Code under Circuit Level Noise
Han-Yu Cao, Shoukuan Zhao, Dongyang Feng +8 more·Jan 7, 2025
Repetition code forms a fundamental basis for quantum error correction experiments. To date, it stands as the sole code that has achieved large distances and extremely low error rates. Its applications span the spectrum of evaluating hardware limitat...
Robust Mølmer-Sørensen gate against symmetric and asymmetric errors
Wenhao Zhang, Gaoxiang Tang, Kecheng Liu +4 more·Jan 6, 2025
To achieve the entangling gate fidelity above the quantum error correction threshold, it is critical to suppress errors due to experimental imperfection. We consider the Mølmer-Sørensen gates in trapped-ion systems, and develop a general approach to ...
Operating semiconductor qubits without individual barrier gates
A. Ivlev, D. R. Crielaard, M. Meyer +8 more·Jan 6, 2025
Semiconductor spin qubits have emerged as a promising platform for quantum computing, following a significant improvement in their control fidelities over recent years. Increasing the qubit count remains challenging, beginning with the fabrication of...
Hardware-aware Toffoli gate decomposition via echoed cross-resonance gates
M. AbuGhanem·Jan 4, 2025
Quantum computing promises transformative potential for solving classically intractable problems in chemistry, materials science, drug discovery, and optimization. However, current noisy intermediate-scale quantum (NISQ) devices face fundamental limi...
Quantum Distribution Error Mitigation via the Circulant Structure of Pauli Noise
Alvin Gonzales·Jan 3, 2025
This work introduces distribution error mitigation (DEM), which mitigates the error in the output distribution of a quantum circuit. We provide a rigorous theoretical foundation. If the composite noise affecting the circuit is a Pauli channel, the id...
Noise-Mitigated Variational Quantum Eigensolver with Pre-training and Zero-Noise Extrapolation
Wanqi Sun, Jungang Xu, Chenghua Duan·Jan 3, 2025
As a hybrid quantum-classical algorithm, the variational quantum eigensolver is widely applied in quantum chemistry simulations, especially in computing the electronic structure of complex molecular systems. However, on existing noisy intermediate-sc...
Genetic algorithm enhanced Solovay-Kitaev algorithm for quantum compiling of Fibonacci anyons
Jiangwei Long, Xuyang Huang, Jianxin Zhong +1 more·Jan 3, 2025
Quantum compiling, which aims to approximate target qubit gates by finding optimal sequences (braidwords) of basic braid operations, constitutes a fundamental challenge in quantum computing. We develop a genetic algorithm (GA)-enhanced Solovay–Kitaev...
Topological quantum compilation of metaplectic anyons based on the genetic optimized algorithms
Jiangwei Long, Jianxin Zhong, L. Meng·Jan 3, 2025
Topological quantum computing holding global anti-interference ability is realized by braiding some anyons, such as well-known Fibonacci anyons. Here, based on $SO(3)_2 $ theory we obtain a total of 6 anyon models utilizing \textit{F}-matrices, \text...
Enhanced Two-Way Teleportation of Entangled States with Six-Qubit Cluster State
R. Vedhanayagi, Soubhik De, A. BasherrudinMahmudAhmed +1 more·Dec 30, 2024
This work presents a two-way teleportation protocol for the transfer of an unknown two-qubit quantum state between two parties Alice and Bob, utilizing a six-qubit cluster state. This bidirectional exchange is achieved by performing Bell measurements...
Lindbladian Simulation with Logarithmic Precision Scaling via Two Ancillas.
Wenjun Yu, Xiaogang Li, Qi Zhao +1 more·Dec 30, 2024
Quantum computers promise efficient simulation of Lindbladian dynamics in open quantum systems, with broad applications in quantum chemistry, quantum error correction, and quantum state preparation. However, simulating open systems is more challengin...