Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A variational quantum algorithm-based numerical method for solving potential and Stokes flows
Yangyang Liu, Zhen Chen, Chi-Wang Shu +5 more·Mar 3, 2023
This paper presents a numerical method based on the variational quantum algorithm to solve potential and Stokes flow problems. In this method, the governing equations for potential and Stokes flows can be respectively written in the form of Laplace's...
Large-scale simulations of Floquet physics on near-term quantum computers
T. Eckstein, Refik Mansuroglu, Piotr Czarnik +5 more·Mar 3, 2023
Periodically driven quantum systems exhibit a diverse set of phenomena but are more challenging to simulate than their equilibrium counterparts. Here, we introduce the Quantum High-Frequency Floquet Simulation (QHiFFS) algorithm as a method to simula...
QAOAwith $N\cdot p\geq 200$
Ruslan Shaydulin, Marco Pistoia·Mar 3, 2023
One of the central goals of the DARPA Optimization with Noisy Intermediate-Scale Quantum (ONISQ) program is to implement a hybrid quantum/classical optimization algorithm with high $N\cdot p$, where $N$ is the number of qubits and $p$ is the number o...
Realization of higher-order topological lattices on a quantum computer
Jin Ming Koh, Tommy Tai, Ching Hua Lee·Mar 3, 2023
Programmable quantum simulators may one day outperform classical computers at certain tasks. But at present, the range of viable applications with noisy intermediate-scale quantum (NISQ) devices remains limited by gate errors and the number of high-q...
Determination of molecular energies via variational-based quantum imaginary time evolution in a superconducting qubit system
Z. Zong, Sai-nan Huai, T. Cai +10 more·Mar 2, 2023
As a valid tool for solving ground state problems, imaginary time evolution (ITE) is widely used in physical and chemical simulations. Different ITE-based algorithms in their quantum counterpart have recently been proposed and applied to some real sy...
Simple Tests of Quantumness Also Certify Qubits
Zvika Brakerski, A. Gheorghiu, Gregory D. Kahanamoku-Meyer +2 more·Mar 2, 2023
A test of quantumness is a protocol that allows a classical verifier to certify (only) that a prover is not classical. We show that tests of quantumness that follow a certain template, which captures recent proposals such as (Kalai et al., 2022), can...
Quantum Channel Certification with Incoherent Strategies
Omar Fawzi, Nicolas Flammarion, Aurélien Garivier +1 more·Mar 2, 2023
In the problem of quantum channel certification, we have black box access to a quantum process and would like to decide if this process matches some predefined specification or is $\varepsilon$-far from this specification. The objective is to achieve...
High-fidelity parametric beamsplitting with a parity-protected converter
Yao Lu, Aniket Maiti, John W. O. Garmon +6 more·Mar 2, 2023
Fast, high-fidelity operations between microwave resonators are an important tool for bosonic quantum computation and simulation with superconducting circuits. An attractive approach for implementing these operations is to couple these resonators via...
Error mitigation in brainbox quantum autoencoders
Jos'ephine Pazem, M. Ansari·Mar 2, 2023
Quantum hardware faces noise challenges that disrupt multiqubit entangled states. Quantum autoencoder circuits with a single qubit bottleneck have demonstrated the capability to correct errors in noisy entangled states. By introducing slightly more c...
Quantum process tomography of continuous-variable gates using coherent states
Mikael Kervinen, Shahnawaz Ahmed, M. Kudra +5 more·Mar 2, 2023
Encoding quantum information into superpositions of multiple Fock states of a harmonic oscillator can provide protection against errors, but it comes with the cost of requiring more complex quantum gates that need to address multiple Fock states simu...
Mathematical Foundations of Quantum Computing for Computer Science Researchers
G. Fleury, P. Lacomme·Mar 2, 2023
This paper provides a short introduction to the mathematical foundation of quantum computation for researchers in computer science by providing an introduction fo the mathematical basis of calculations. This paper concerns the mathematical foundation...
Designing a Fast and Flexible Quantum State Simulator
Saveliy Yusufov, Charlee Stefanski, Constantin Gonciulea·Mar 2, 2023
This paper describes the design and implementation of Spinoza, a fast and flexible quantum simulator written in Rust. Spinoza simulates the evolution of a quantum system's state by applying quantum gates, with the core design principle being that a s...
Experimental error suppression in Cross-Resonance gates via multi-derivative pulse shaping
Boxi Li, T. Calarco, F. Motzoi·Mar 2, 2023
While quantum circuits are reaching impressive widths in the hundreds of qubits, their depths have not been able to keep pace. In particular, cloud computing gates on multi-qubit, fixed-frequency superconducting chips continue to hover around the 1% ...
Partitioning Quantum Chemistry Simulations with Clifford Circuits.
Philipp Schleich, Joseph Boen, L. Cincio +5 more·Mar 2, 2023
Current quantum computing hardware is restricted by the availability of only few, noisy qubits which limits the investigation of larger, more complex molecules in quantum chemistry calculations on quantum computers in the near term. In this work, we ...
Real-time hybrid quantum-classical computations for trapped ions with Python control-flow
Tobias Schmale, Bence Temesi, Niko Trittschanke +7 more·Mar 2, 2023
In recent years, the number of hybrid algorithms that combine quantum and classical computations has been continuously increasing. These two approaches to computing can mutually enhance each others’ performances thus bringing the promise of more adva...
Quantum state preparation of normal distributions using matrix product states
J. Iaconis, S. Johri, E. Zhu·Mar 2, 2023
State preparation is a necessary component of many quantum algorithms. In this work, we combine a method for efficiently representing smooth differentiable probability distributions using matrix product states with recently discovered techniques for ...
Fluxonium qubits in a flip-chip package
A. Somoroff, P. Truitt, A. Weis +9 more·Mar 2, 2023
The strong anharmonicity and high coherence times inherent to fluxonium superconducting circuits are beneficial for quantum information processing. In addition to requiring high-quality physical qubits, a quantum processor needs to be assembled in a ...
Q2Logic: An Coarse-Grained Architecture targeting Schrödinger Quantum Circuit Simulations
Artur Podobas·Mar 2, 2023
Quantum computing is emerging as an important (but radical) technology that might take us beyond Moore's law for certain applications. Today, in parallel with improving quantum computers, computer scientists are relying heavily on quantum circuit sim...
Certified Randomness from Quantum Supremacy
S. Aaronson, S. Hung·Mar 2, 2023
We propose an application for near-term quantum devices: namely, generating cryptographically certified random bits, to use (for example) in proof-of-stake cryptocurrencies. Our protocol repurposes the existing “quantum supremacy” experiments, based ...
Achieving metrological limits using ancilla-free quantum error-correcting codes
Sisi Zhou, Argyris Giannisis Manes, Liang Jiang·Mar 2, 2023
Quantum error correction (QEC) is theoretically capable of achieving the ultimate estimation limits in noisy quantum metrology. However, existing quantum error-correcting codes designed for noisy quantum metrology generally exploit entanglement betwe...