Papers
Live trends in quantum computing research, updated daily from arXiv.
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13,033 papers in 12 months (-2% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Low-overhead quantum computing with the color code
Felix Thomsen, Markus S. Kesselring, S. Bartlett +1 more·Jan 19, 2022
Fault-tolerant quantum computation demands significant resources: large numbers of physical qubits must be checked for errors repeatedly to protect quantum data as logic gates are implemented in the presence of noise. We demonstrate that an approach ...
On-demand electrical control of spin qubits
W. Gilbert, T. Tanttu, W. H. Lim +17 more·Jan 18, 2022
High-performance all-electrical control is a prerequisite for scalable silicon quantum computing. The switchable interaction between spins and orbital motion of electrons in silicon quantum dots now enables the electrical control of a spin qubit with...
Shortcuts to Adiabaticity for Fast Qubit Readout in Circuit Quantum Electrodynamics
F. C'ardenas-L'opez, Xi Chen·Jan 16, 2022
We propose how to engineer the longitudinal coupling to accelerate the measurement of a qubit longitudinally coupled to a cavity, motivated by the concept of shortcuts to adiabaticity. Different modulations are inversely designed from two methods of ...
Single Temporal-Pulse-Modulated Parameterized Controlled-Phase Gate for Rydberg Atoms
X. X. Li, X. Shao, Weibin Li·Jan 16, 2022
We propose an adiabatic protocol for implementing a controlled-phase gate CZ$_{\theta}$ with continuous $\theta$ of neutral atoms through a symmetrical two-photon excitation process via the second resonance line, $6P$ in $^{87}$Rb, with a single-temp...
EP-PQM: Efficient Parametric Probabilistic Quantum Memory With Fewer Qubits and Gates
Mushahid Khan, J. Faye, U. C. Mendes +1 more·Jan 10, 2022
Machine learning (ML) classification tasks can be carried out on a quantum computer (QC) using probabilistic quantum memory (PQM) and its extension, parametric PQM (P-PQM), by calculating the Hamming distance between an input pattern and a database o...
Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays
Yue Wu, S. Kolkowitz, S. Puri +1 more·Jan 10, 2022
Executing quantum algorithms on error-corrected logical qubits is a critical step for scalable quantum computing, but the requisite numbers of qubits and physical error rates are demanding for current experimental hardware. Recently, the development ...
High-fidelity tomography of fluorescent ion qubits under conditions of limited discrimination between bright and dark levels
Y. Bogdanov, B. Bantysh, Nadezhda A. Bogdanova +2 more·Jan 9, 2022
The present work is devoted to the development of a method for high-precision tomography of ion qubit registers under conditions of limited distinguishability of the states of a logical value 0 and a logical value 1. In the considered ion qubits, the...
Study of the effect of quantum noise on the accuracy of the Schrödinger equation simulation on a quantum computer using the Zalka-Wiesner method
Yurii I. Bogdanov, N. Bogdanova, D. V. Fastovets +1 more·Jan 9, 2022
The study of the effect of quantum noise on the accuracy of modeling quantum systems on a quantum computer using the Zalka-Wiesner method is carried out. The efficiency of the developed methods and algorithms is demonstrated by the example of solving...
Benchmarking characterization methods for noisy quantum circuits
Megan L. Dahlhauser, T. Humble·Jan 6, 2022
Effective methods for characterizing the noise in quantum computing devices are essential for programming and debugging circuit performance. Existing approaches vary in the information obtained as well as the amount of quantum and classical resources...
Quantum integration of elementary particle processes
Gabriele Agliardi, M. Grossi, M. Pellen +1 more·Jan 5, 2022
We apply quantum integration to elementary particle-physics processes. In particular, we look at scattering processes such as ${\rm e}^+{\rm e}^- \to q \bar q$ and ${\rm e}^+{\rm e}^- \to q \bar q' {\rm W}$. The corresponding probability distribution...
Superconformal Quantum Mechanics on a Quantum Computer
Yuan Feng, M. McGuigan, Tristen White·Jan 3, 2022
We investigate superconformal quantum mechanics (SCQM) on a quantum computer. We study the ground state of the mass deformed SCQM on a quantum computed using the Variational Quantum Eigensolver (VQE) using a one boson and one boson one fermion Hilber...
Physical publicly verifiable randomness from pulsars
J. Dawson, G. Hobbs, Yansong Gao +28 more·Jan 1, 2022
We demonstrate how radio pulsars can be used as random number generators. Specifically, we focus on publicly verifiable randomness (PVR), in which the same sequence of trusted and verifiable random numbers is obtained by multiple parties. PVR is a cr...
Robust and Efficient Hamiltonian Learning
Wenjun Yu, Jinzhao Sun, Zeyao Han +1 more·Jan 1, 2022
With the fast development of quantum technology, the sizes of both digital and analog quantum systems increase drastically. In order to have better control and understanding of the quantum hardware, an important task is to characterize the interactio...
Numerical simulations of noisy quantum circuits for computational chemistry
Jerimiah Wright, Meenambika Gowrishankar, Daniel Claudino +4 more·Dec 31, 2021
The opportunities afforded by near-term quantum computers to calculate the ground-state properties of small molecules depend on the structure of the computational ansatz as well as the errors induced by device noise. Here we investigate the behavior ...
Quantum computational study of chloride attack on chloromethane for chemical accuracy and quantum noise effects with UCCSD and k-UpCCGSD ansatzes
Hocheol Lim, Hyeon-Nae Jeon, J. Rhee +2 more·Dec 31, 2021
Quantum computing is expected to play an important role in solving the problem of huge computational costs in various applications by utilizing the collective properties of quantum states, including superposition, interference, and entanglement, to p...
Algorithmic Strategies for seizing Quantum Computing
Adri'an P'erez-Salinas·Dec 30, 2021
Quantum computing is a nascent technology with prospects to have a huge impact in the world. Its current status, however, only counts on small and noisy quantum computers whose performance is limited. In this thesis, two different strategies are expl...
Optimal control of a quantum sensor: A fast algorithm based on an analytic solution
S. Hernández-Gómez, Federico Balducci, G. Fasiolo +3 more·Dec 30, 2021
Quantum sensors can show unprecedented sensitivities, provided they are controlled in a very specific, optimal way. Here, we consider a spin sensor of time-varying fields in the presence of dephasing noise, and we show that the problem of finding the...
Active Learning of Quantum System Hamiltonians yields Query Advantage
Arko Dutt, E. Pednault, C. Wu +4 more·Dec 29, 2021
Hamiltonian learning is an important procedure in quantum system identification, calibration, and successful operation of quantum computers. Through queries to the quantum system, this procedure seeks to obtain the parameters of a given Hamiltonian m...
Automatic quantum circuit encoding of a given arbitrary quantum state
T. Shirakawa, H. Ueda, S. Yunoki·Dec 29, 2021
We introduce an quantum-classical hybrid algorithm, named automatic quantum circuit encoding (AQCE), that is designed to encode an arbitrary quantum state |Ψ〉 onto an optimal quantum circuit Ĉ composed of a finite set of single- and two-qubit quantu...
Preparing thermal states on noiseless and noisy programmable quantum processors
O. Shtanko, R. Movassagh·Dec 29, 2021
Nature is governed by precise physical laws, which can inspire the discovery of new computer-run simulation algorithms. Thermal states are the most ubiquitous for they are the equilibrium states of matter. Simulating thermal states of quantum matter ...