Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,611
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Research Volume
15,671 papers in 12 months (-39% vs prior quarter)
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Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Toward Cosmological Simulations of Dark Matter on Quantum Computers
Philip Mocz, Aaron Szasz·Jan 14, 2021
State-of-the-art cosmological simulations on classical computers are limited by time, energy, and memory usage. Quantum computers can perform some calculations exponentially faster than classical computers, using exponentially less energy and memory,...
Entangled Kernels - Beyond Separability
Riikka Huusari, H. Kadri·Jan 14, 2021
We consider the problem of operator-valued kernel learning and investigate the possibility of going beyond the well-known separable kernels. Borrowing tools and concepts from the field of quantum computing, such as partial trace and entanglement, we ...
Assessing the Precision of Quantum Simulation of Many-Body Effects in Atomic Systems Using the Variational Quantum Eigensolver Algorithm
Sumeet, Srinivasa Prasannaa V, B. Das +1 more·Jan 14, 2021
The emerging field of quantum simulation of many-body systems is widely recognized as a very important application of quantum computing. A crucial step towards its realization in the context of many-electron systems requires a rigorous quantum mechan...
Bias in Error-Corrected Quantum Sensing.
Ivan Rojkov, David Layden, P. Cappellaro +2 more·Jan 14, 2021
The sensitivity afforded by quantum sensors is limited by decoherence. Quantum error correction (QEC) can enhance sensitivity by suppressing decoherence, but it has a side effect: it biases a sensor's output in realistic settings. If unaccounted for,...
Quantum state tomography and purity measurement of a multiqubit system with random single-pulse rotations
Y. Yanay, C. Tahan·Jan 14, 2021
Quantum state tomography and other measures of the global properties of a quantum state are indispensable tools in understanding many body physics through quantum simulators. Unfortunately, the number of experimental measurements of the system requir...
Local classical MAX-CUT algorithm outperforms p=2 QAOA on high-girth regular graphs
Kunal Marwaha·Jan 14, 2021
<jats:p>The <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>p</mml:mi></mml:math>-stage Quantum Approximate Optimization Algorithm (QAOA<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi /><mml:mi>p</mml:mi></...
Quantum Computing with Superconducting Circuits in the Picosecond Regime
Daoquan Zhu, T. Jaako, Qiongyi He +1 more·Jan 14, 2021
We discuss the realization of a universal set of ultrafast single- and two-qubit operations with superconducting quantum circuits and investigate the most relevant physical and technical limitations that arise when pushing for faster and faster gates...
Efficient Quantum Circuit Synthesis for SAT-Oracle With Limited Ancillary Qubit
Shuai Yang, Wei Zi, Bujiao Wu +3 more·Jan 14, 2021
One of the main concerns in the era of noisy intermediate-scale quantum (NISQ) computing and fault-tolerant quantum computing is the optimization of circuit implementation for quantum oracles, particularly with limited resources. Synthesizing a satis...
Fastest Local Entanglement Scrambler, Multistage Thermalization, and a Non-Hermitian Phantom
J. Bensa, M. Znidaric·Jan 14, 2021
We study random quantum circuits and their rate of producing bipartite entanglement, specifically with respect to the choice of 2-qubit gates and the order (protocol) in which these are applied. The problem is mapped to a Markovian process and proved...
Quantum annealing initialization of the quantum approximate optimization algorithm
Stefan H. Sack, Maksym Serbyn·Jan 14, 2021
The quantum approximate optimization algorithm (QAOA) is a prospective near-term quantum algorithm due to its modest circuit depth and promising benchmarks. However, an external parameter optimization required in QAOA could become a performance bottl...
Efficient Construction of Quantum Physical Unclonable Functions with Unitary t-designs
N. Kumar, R. Mezher, E. Kashefi·Jan 14, 2021
Quantum physical unclonable functions, or QPUFs, are rapidly emerging as theoretical hardware solutions to provide secure cryptographic functionalities such as key-exchange, message authentication, entity identification among others. Recent works hav...
Classical Artificial Neural Network Training Using Quantum Walks as a Search Procedure
Luciano S. de Souza, Jonathan H. A. de Carvalho, T. Ferreira·Jan 13, 2021
This article proposes a computational procedure that applies a quantum algorithm to train classical artificial neural networks. The goal of the procedure is to apply quantum walk as a search algorithm in a complete graph to find all synaptic weights ...
A general quantum algorithm for open quantum dynamics demonstrated with the Fenna-Matthews-Olson complex
Zixuan Hu, Kade Head-Marsden, D. Mazziotti +2 more·Jan 13, 2021
Using quantum algorithms to simulate complex physical processes and correlations in quantum matter has been a major direction of quantum computing research, towards the promise of a quantum advantage over classical approaches. In this work we develop...
Quantum algorithmic measurement
D. Aharonov, Jordan S. Cotler, X. Qi·Jan 12, 2021
There has been recent promising experimental and theoretical evidence that quantum computational tools might enhance the precision and efficiency of physical experiments. However, a systematic treatment and comprehensive framework are missing. Here w...
An efficient quantum algorithm for the time evolution of parameterized circuits
Stefano Barison, Filippo Vicentini, Giuseppe Carleo·Jan 12, 2021
We introduce a novel hybrid algorithm to simulate the real-time evolution of quantum systems using parameterized quantum circuits. The method, named "projected – Variational Quantum Dynamics" (p-VQD) realizes an iterative, global projection of the ex...
Cold ion beam in a storage ring as a platform for large-scale quantum computers and simulators: Challenges and directions for research and development
T. Shaftan, B. Blinov·Jan 12, 2021
The purpose of this paper is to evaluate the possibility of constructing a large-scale storage-ring-type iontrap system capable of storing, cooling, and controlling a large number of ions as a platform for scalable quantum computing (QC) and quantum ...
Quantum option pricing using Wick rotated imaginary time evolution
Santosh Kumar Radha·Jan 12, 2021
In this paper we reformulate the problem of pricing options in a quantum setting. Our proposed algorithm involves preparing an initial state, representing the option price, and then evolving it using existing imaginary time simulation algorithms. Thi...
Stochastic search for approximate compilation of unitaries
Ryan E Shaffer·Jan 12, 2021
Compilation of unitaries into a sequence of physical quantum gates is a critical prerequisite for execution of quantum algorithms. This work introduces STOQ, a stochastic search protocol for approximate unitary compilation into a sequence of gates fr...
Spinors with torsion and matter$-$antimatter asymmetry
Nikodem Popławski·Jan 11, 2021
The conservation law for the orbital plus spin angular momentum of a free Dirac particle in curved spacetime requires that the affine connection has the antisymmetric part: the torsion tensor, which extends general relativity to the Einstein$-$Cartan...
Quantum Simulation of the Bosonic Creutz Ladder with a Parametric Cavity.
Jimmy S. C. Hung, J. Busnaina, C. S. Chang +6 more·Jan 11, 2021
There has been a growing interest in realizing quantum simulators for physical systems where perturbative methods are ineffective. The scalability and flexibility of circuit quantum electrodynamics make it a promising platform for implementing variou...