Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Automated Auxiliary Qubit Allocation in High-Level Quantum Programming
E. Rosa, Jerusa Marchi, E. I. Duzzioni +1 more·Dec 29, 2024
We present a method for optimizing quantum circuit compilation by automating the allocation of auxiliary qubits for multi-qubit gate decompositions. This approach is implemented and evaluated within the high-level quantum programming platform Ket. Ou...
An Addressable and Tunable Module for Donor-based Scalable Silicon Quantum Computing
Shihang Zhang, Yu He, Peihao Huang·Dec 28, 2024
Donor-based spin qubit offers a promising silicon quantum computing route for building large-scale qubit arrays, attributed to its long coherence time and advancements in nanoscale donor placement. However, the state-of-the-art device designs face sc...
An Adaptive Mixer Allocation Algorithm for the Quantum Alternating Operator Ansatz
Xiao-Hui Ni, Yu-Sen Wu, Bin-Bin Cai +3 more·Dec 27, 2024
Recently, Hadfield et al. proposed the quantum alternating operator ansatz algorithm (QAOA+), an extension of the quantum approximate optimization algorithm (QAOA), to solve constrained combinatorial optimization problems (CCOPs). Compared with QAOA,...
Transmon qutrit-based simulation of spin-1 AKLT systems
Keerthi Kumaran, Faisal Alam, N. Eassa +5 more·Dec 27, 2024
Qutrit-based quantum circuits could help reduce the overall circuit depths, and hence the effect of noise, when the system of interest has a local dimension of three. Accessing second excited states in superconducting transmons provides a straightfor...
Traversing Quantum Control Robustness Landscapes: A New Paradigm for Quantum Gate Engineering
Huiqi Xue, Xiu-Hao Deng·Dec 27, 2024
The optimization of robust quantum control is often tailored to specific tasks and suffers from inefficiencies due to the complexity of cost functions. Our recent findings indicate a highly effective methodology for the engineering of quantum gates b...
A Time Optimization Framework for the Implementation of Robust and Low-latency Quantum Circuits
E. Lussi, R. Santiago, E. I. Duzzioni·Dec 24, 2024
Quantum computing has garnered attention for its potential to solve complex computational problems with considerable speedup. Despite notable advancements in the field, achieving meaningful scalability and noise control in quantum hardware remains ch...
Quantum simulation of Burgers turbulence: Nonlinear transformation and direct evaluation of statistical quantities
Fumio Uchida, Koichi Miyamoto, Soichiro Yamazaki +2 more·Dec 23, 2024
Fault-tolerant quantum computing is a promising technology to solve linear partial differential equations that are classically demanding to integrate. It is still challenging to solve non-linear equations in fluid dynamics, such as the Burgers equati...
On-chip frequency-bin quantum photonics
K. Myilswamy, L. Cohen, Suparna Seshadri +2 more·Dec 23, 2024
Abstract Frequency-bin encoding furnishes a compelling pathway for quantum information processing systems compatible with established lightwave infrastructures based on fiber-optic transmission and wavelength-division multiplexing. Yet although signi...
Quantum Algorithms for Discrete Log Require Precise Rotations
Jin-Yi Cai, Ben Young·Dec 23, 2024
Recently, Cai [3] showed that Shor’s quantum factoring algorithm fails to factor large integers when algorithm’s quantum Fourier transform (QFT) is corrupted by a vanishing level of random noise on the QFT’s precise controlled rotation gates. We show...
Classical simulability of Clifford+T circuits with Clifford-augmented matrix product states
Zejun Liu, Bryan K. Clark·Dec 23, 2024
Determining the quantum-classical boundary between quantum circuits which can be efficiently simulated classically and those which cannot remains a fundamental question. One approach to classical simulation is to represent the output of a quantum cir...
Dynamic T-decomposition for classical simulation of quantum circuits
Wira Azmoon Ahmad, Matthew Sutcliffe·Dec 22, 2024
It is known that a quantum circuit may be simulated with classical hardware via stabilizer state (T-)decomposition in $O(2^{\alpha t})$ time, given $t$ non-Clifford gates and a decomposition efficiency $\alpha$. The past years have seen a number of p...
E-LoQ: Enhanced Locking for Quantum Circuit IP Protection
Yuntao Liu, Jayden John, Qian Wang·Dec 22, 2024
In recent years, quantum computing has started to demonstrate superior efficiency to classical computing. In quantum computing, quantum circuits that implement specific quantum algorithms are usually not directly executable on quantum computer hardwa...
New design of three-qubit system with three transmons and a single fixed-frequency resonator coupler
Jeongsoo Kang, Chanpyo Kim, Younghun Kim +1 more·Dec 20, 2024
The transmon, which has a short gate time and remarkable scalability, is the most commonly utilized superconducting qubit, based on the Cooper pair box as a qubit or coupler in superconducting quantum computers. Lattice and heavy-hexagon structures a...
Kramers-Protected Hardware-Efficient Error Correction with Andreev Spin Qubits.
Haoran Lu, Isidora Araya Day, A. Akhmerov +2 more·Dec 20, 2024
We propose an architecture for bit-flip error correction of Andreev spins that is protected by Kramers' degeneracy. Specifically, we show that a coupling network of linear inductors and Andreev spin qubits results in a static Hamiltonian composed of ...
Error-Corrected Fermionic Quantum Processors with Neutral Atoms.
Robert Ott, Daniel Gonz'alez-Cuadra, T. Zache +3 more·Dec 20, 2024
Many-body fermionic systems can be simulated in a hardware-efficient manner using a fermionic quantum processor. Neutral atoms trapped in optical potentials can realize such processors, where nonlocal fermionic statistics are guaranteed at the hardwa...
Implementation of magic state injection within heavy-hexagon architectures
Hansol Kim, Wonjae Choi, Younghun Kwon·Dec 20, 2024
The magic state injection process is a critical component of fault-tolerant quantum computing, and numerous studies have been conducted on this topic. Many existing studies have focused on square-lattice structures, where each qubit connects directly...
Efficient Hamiltonian Simulation: A Utility Scale Perspective for Covalent Inhibitor Reactivity Prediction
Marek Kowalik, Sam Genway, Vedangi Pathak +8 more·Dec 20, 2024
Quantum computing applications in the noisy intermediate-scale quantum (NISQ) era require algorithms that can generate shallower circuits feasible for today's quantum systems. This is particularly challenging for quantum chemistry applications due to...
Characterisation of individual gates using twirling circuits
David Amaro-Alcalá·Dec 19, 2024
We present a method to characterise qubit gates. Utilising the supermap formalism, we create a scheme for deterministic single-qubit gate analysis. Our approach introduces a new twirling process that is applied directly through fixed circuits. This m...
Quantum circuit synthesis with SQiSW
Jialiang Tang, Jialin Zhang, Xiaoming Sun·Dec 19, 2024
The primary objective of quantum circuit synthesis is to efficiently and accurately realize specific quantum algorithms or operations utilizing a predefined set of quantum gates, while also optimizing the circuit size. It holds a pivotal position in ...
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...