Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Gate generation for open quantum systems via a monotonic algorithm with time optimization
Paulo Sergio Pereira da Silva, Pierre Rouchon·Mar 29, 2024
We present a monotonic numerical algorithm including time optimization for generating quantum gates for open systems. Such systems are assumed to be governed by Lindblad master equations for the density operators on a large Hilbert-space whereas the ...
On the feasibility of quantum teleportation protocols implemented with silicon devices.
Junghee Ryu, Hoon Ryu·Mar 28, 2024
With recent experimental advancements demonstrating high-fidelity universal logic gates and basic programmability, silicon-based spin quantum bits (qubits) have emerged as promising candidates for scalable quantum computing. However, implementation o...
Optimizing Quantum Convolutional Neural Network Architectures for Arbitrary Data Dimension
Changwon Lee, Israel F. Araujo, Dongha Kim +4 more·Mar 28, 2024
Quantum convolutional neural networks (QCNNs) represent a promising approach in quantum machine learning, paving new directions for both quantum and classical data analysis. This approach is particularly attractive due to the absence of the barren pl...
Arbitrary quantum circuits on a fully integrated two-qubit computation register for a trapped-ion quantum processor
N. Pulido-Mateo, H. Mendpara, M. Duwe +4 more·Mar 28, 2024
We report on the implementation of arbitrary circuits on a universal two-qubit register that can act as the computational module in a trapped-ion quantum computer based on the quantum charge-coupled device architecture. A universal set of quantum gat...
Theory of quantum error mitigation for non-Clifford gates
David Layden, Bradley Mitchell, Karthik Siva·Mar 27, 2024
Quantum error mitigation techniques mimic noiseless quantum circuits by running several related noisy circuits and combining their outputs in particular ways. How well such techniques work is thought to depend strongly on how noisy the underlying gat...
Efficient generation of multi-partite entanglement between non-local superconducting qubits using classical feedback
A. Hashim, Ming Yuan, P. Gokhale +8 more·Mar 27, 2024
Quantum entanglement is one of the primary features which distinguish quantum computers from classical computers. In gate-based quantum computing, the creation of entangled states or the distribution of entanglement across a quantum processor often r...
Benchmarking Quantum Generative Learning: A Study on Scalability and Noise Resilience using QUARK
Florian J. Kiwit, Maximilian A. Wolf, M. Marso +4 more·Mar 27, 2024
Quantum computing promises a disruptive impact on machine learning algorithms, taking advantage of the exponentially large Hilbert space available. However, it is not clear how to scale quantum machine learning (QML) to industrial-level applications....
Fast quantum integer multiplication with zero ancillas
Gregory D. Kahanamoku-Meyer, N. Yao·Mar 26, 2024
The multiplication of superpositions of numbers is a core operation in many quantum algorithms. The standard method for multiplication (both classical and quantum) has a runtime quadratic in the size of the inputs. Quantum circuits with asymptoticall...
Boson sampling enhanced quantum chemistry
Zhong-Xia Shang, Han-Sen Zhong, Yukun Zhang +5 more·Mar 25, 2024
In this work, we give a hybrid quantum-classical algorithm for solving electronic structure problems of molecules using only linear quantum optical systems. The variational ansatz we proposed is a hybrid of non-interacting Boson dynamics and classica...
Computable and non-computable in the quantum domain: statements and conjectures
Aleksey K. Fedorov, E. Kiktenko, N. Kolachevsky·Mar 25, 2024
Significant advances in the development of computing devices based on quantum effects and the demonstration of their use to solve various problems have rekindled interest in the nature of the"quantum computational advantage."Although various attempts...
Qu8its for quantum simulations of lattice quantum chromodynamics
Marc Illa, C. Robin, Martin J. Savage·Mar 21, 2024
We explore the utility of $d=8$ qudits, qu8its, for quantum simulations of the dynamics of 1+1D SU(3) lattice quantum chromodynamics, including a mapping for arbitrary numbers of flavors and lattice size and a re-organization of the Hamiltonian for e...
Bootstrapping shallow circuits
Ning Bao, Gun Suer·Mar 21, 2024
Recently, a polynomial time classical algorithm has been found for learning the shallow representation of a unitary $U$ acting on $n$-qubits, by learning local inversions and then sewing them back together with ancilla qubits and SWAP gates. In this ...
Polynomial-Time Classical Simulation of Noisy IQP Circuits with Constant Depth
Joel Rajakumar, James D. Watson, Yi-Kai Liu·Mar 21, 2024
Sampling from the output distributions of quantum computations comprising only commuting gates, known as instantaneous quantum polynomial (IQP) computations, is believed to be intractable for classical computers, and hence this task has become a lead...
Experimental fault-tolerant code switching
Ivan Pogorelov, Friederike Butt, L. Postler +4 more·Mar 20, 2024
Quantum error correction is essential for mitigating hardware errors in quantum computers by encoding logical information into several physical qubits. However, no single error-correcting code intrinsically supports a fault-tolerant implementation of...
Tensor quantum programming
A. Termanova, Artem Melnikov, E. Mamenchikov +6 more·Mar 20, 2024
Running quantum algorithms often involves implementing complex quantum circuits with such a large number of multi-qubit gates that the challenge of tackling practical applications appears daunting. In this article, we propose a novel approach called ...
Beyond Quantum Shannon: Circuit Construction for General n-Qubit Gates Based on Block ZXZ-Decomposition
Anna M. Krol, Zaid Al-Ars·Mar 20, 2024
This paper proposes a new optimized quantum block-ZXZ decomposition method [7,8,10] that results in more optimal quantum circuits than the quantum Shannon decomposition (QSD)[27], which was introduced in 2006 by Shende et al. The decomposition is app...
A Tree-Approach Pauli Decomposition Algorithm with Application to Quantum Computing
Océane Koska, M. Baboulin, Arnaud Gazda·Mar 18, 2024
The Pauli matrices are 2-by-2 matrices that are very useful in quantum computing. They can be used as elementary gates in quantum circuits but also to decompose any matrix of $\mathbb{C}^{2^n \times 2^n}$ as a linear combination of tensor products of...
Sequential and Programmable Squeezing Gates for Optical Non-Gaussian Input States
Takato Yoshida, D. Okuno, T. Kashiwazaki +6 more·Mar 18, 2024
Quantum computing has been pursued with various hardware platforms and an optical system is one of the most reasonable choices for large-scale computation. In the optical continuous-variable computation scheme, the incorporation of Gaussian gates and...
High-fidelity entangling gates for electron and nuclear spin qubits in diamond
Regina Finsterhoelzl, Wolf-Rüdiger Hannes, G. Burkard·Mar 18, 2024
Motivated by the recent experimental progress in exploring the use of a nitrogen-vacancy (NV) center in diamond as a quantum computing platform, we propose schemes for fast and high-fidelity entangling gates on this platform. Using both analytical an...
Optimal Layout Synthesis for Deep Quantum Circuits on NISQ Processors with 100+ Qubits
Irfansha Shaik, J. V. D. Pol·Mar 18, 2024
Layout synthesis is mapping a quantum circuit to a quantum processor. SWAP gate insertions are needed for scheduling 2-qubit gates only on connected physical qubits. With the ever-increasing number of qubits in NISQ processors, scalable layout synthe...