Papers
Live trends in quantum computing research, updated daily from arXiv.
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31,714
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15,749 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum-Assisted Greedy Algorithms
Ramin Ayanzadeh, J. Dorband, M. Halem +1 more·Dec 5, 2019
We show how to leverage quantum annealers (QAs) to better select candidates in greedy algorithms. Unlike conventional greedy algorithms that employ problem-specific heuristics for making locally optimal choices at each stage, we use QAs that sample f...
High-visibility single-shot readout of singlet-triplet qubits in a micromagnet-integrated quadruple quantum dot array
Wonjin Jang, Jehyun Kim, Min-Kyun Cho +5 more·Dec 5, 2019
Fast and high-fidelity quantum state detection is essential for building robust spin-based quantum information processing platforms in semiconductors. The Pauli spin blockade (PSB)-based spin-to-charge conversion and its variants are widely used for ...
A path towards quantum advantage in training deep generative models with quantum annealers
Walter Winci, L. Buffoni, Hossein Sadeghi +3 more·Dec 4, 2019
The development of quantum-classical hybrid (QCH) algorithms is critical to achieve state-of-the-art computational models. A QCH variational autoencoder (QVAE) was introduced in reference [] by some of the authors of this paper. QVAE consists of a cl...
Towards An Implementation of the Subset-sum Problem on the IBM Quantum Experience
David Gunter, Toks Adedoyin·Dec 4, 2019
In seeking out an algorithm to test out the capability of the IBM Quantum Experience quantum computer, we were given a review paper covering various algorithms for solving the subset-sum problem, including both classical and quantum algorithms. The p...
Light-Driven Raman Coherence as a Nonthermal Route to Ultrafast Topology Switching in a Dirac Semimetal
C. Vaswani, Lin-Lin Wang, D. Mudiyanselage +14 more·Dec 4, 2019
A grand challenge underlies the entire field of topology-enabled quantum logic and information science: how to establish topological control principles driven by quantum coherence and understand the time-dependence of such periodic driving? Here we d...
The Ryu-Takayanagi Formula from Quantum Error Correction: An Algebraic Treatment of the Boundary CFT
Helia Kamal, Geoffrey Penington·Dec 4, 2019
It was recently shown by Harlow that any quantum error correcting code, satisfying the same complementary recovery properties as AdS/CFT, will obey a version of the Ryu-Takayanagi formula. In his most general result, Harlow allowed the bulk algebras ...
Quantum unary approach to option pricing
Sergi Ramos-Calderer, Adrián Pérez-Salinas, Diego García-Martín +4 more·Dec 3, 2019
We present a novel quantum algorithm for European option pricing in finance, where the key idea is to work in the unary representation of the asset value. The algorithm needs novel circuitry and is divided in three parts: first, the amplitude distrib...
On the Connection Between Deutsch-Jozsa Algorithm and Bent Functions
E. P. Marinho·Dec 3, 2019
It is presently shown that the Deutsch-Jozsa algorithm is connected to the concept of bent function. Particularly, it is noticeable that the quantum circuit used to denote the well-known quantum algorithm is by itself the quantum computer that perfor...
Benchmarking Quantum Computers and the Impact of Quantum Noise
Salonik Resch, Ulya R. Karpuzcu·Dec 2, 2019
Benchmarking is how the performance of a computing system is determined. Surprisingly, even for classical computers this is not a straightforward process. One must choose the appropriate benchmark and metrics to extract meaningful results. Different ...
Reducing computations in quantum walk algorithms
Asif Shakeel·Dec 2, 2019
Quantum walks (QWs) are of interest as examples of uniquely quantum behavior and are applicable in a variety of quantum search and simulation models. Implementing QWs on quantum devices is useful from both points of view. We describe a prototype one-...
Efficient modeling of superconducting quantum circuits with tensor networks
A. Di Paolo, T. E. Baker, A. Foley +2 more·Dec 2, 2019
We use a tensor network method to compute the low-energy excitations of a large-scale fluxonium qubit up to a desired accuracy. We employ this numerical technique to estimate the pure-dephasing coherence time of the fluxonium qubit due to charge nois...
Mobile Energy Requirements of the Upcoming NIST Post-Quantum Cryptography Standards
Markku-Juhani O. Saarinen·Dec 2, 2019
Standardization of Post-Quantum Cryptography (PQC) was started by NIST in 2016 and has proceeded to its second elimination round. The upcoming standards are intended to replace (or supplement) current RSA and Elliptic Curve Cryptography (ECC) on all ...
Density matrix based perturbative corrections for improved quantum simulation accuracy
T. Morris, Z. P. Parks, A. McCaskey +2 more·Dec 2, 2019
We present error mitigation (EM) techniques for noisy intermediate-scale quantum computers (QC) based on density matrix purification and perturbative corrections to the target energy. We incorporate this scheme into the variational quantum eigensolve...
Memory-assisted decoder for approximate Gottesman-Kitaev-Preskill codes
Kwok Ho Wan, Alex Neville, Steve Kolthammer·Dec 2, 2019
We propose a quantum error correction protocol for continuous-variable finite-energy, approximate Gottesman-Kitaev-Preskill (GKP) states undergoing small Gaussian random displacement errors, based on the scheme of Glancy and Knill [Phys. Rev. A {\bf ...
The supersingular isogeny problem in genus 2 and beyond
Craig Costello, Benjamin A. Smith·Dec 2, 2019
Let \(A/\overline{\mathbb {F}}_p\) and \(A'/\overline{\mathbb {F}}_p\) be superspecial principally polarized abelian varieties of dimension \(g>1\). For any prime \(\ell \ne p\), we give an algorithm that finds a path \(\phi :A \rightarrow A'\) in th...
Incompatibility probability of random quantum measurements.
Lin Zhang, Hua Xiang, X. Li-Jost +1 more·Dec 1, 2019
Incompatibility of quantum measurements is of fundamental importance in quantum mechanics. It is closely related to many nonclassical phenomena such as Bell nonlocality, quantum uncertainty relations, and quantum steering. We study the necessary and ...
Towards analyzing large graphs with quantum annealing
H. Reittu, Ville Kotovirta, Lasse Leskelä +2 more·Dec 1, 2019
The use of quantum computing in graph community detection and regularity checking related to Szemerédi’s Regularity Lemma (SRL) are demonstrated with D-Wave Systems’ quantum annealer and simulations. We demonstrate the capability of quantum computing...
Implementation of a general single-qubit positive operator-valued measure on a circuit-based quantum computer
Y. Yordanov, C. Barnes·Dec 1, 2019
We derive a deterministic protocol to implement a general single-qubit POVM on near-term circuit-based quantum computers. The protocol has a modular structure, such that an $n$-element POVM is implemented as a sequence of $(n-1)$ circuit modules. Eac...
Demonstration of minisuperspace quantum cosmology using quantum computational algorithms on IBM quantum computer
Anirban Ganguly, Ritu Dhaulakhandi, B. K. Behera +1 more·Dec 1, 2019
Quantum computers promise to efficiently solve important problems that are intractable on a conventional computer. Quantum computational algorithms have the potential to be an exciting new way of studying quantum cosmology. In quantum cosmology, we l...
Scheduler of quantum circuits based on dynamical pattern improvement and its application to hardware design
G. Guerreschi·Nov 29, 2019
As quantum hardware increases in complexity, successful algorithmic execution relies more heavily on awareness of existing device constraints. In this work we focus on the problem of routing quantum information across the machine to overcome the limi...