Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
28,402
This Month
150
Today
0
Research Volume
13,509 papers in 12 months (-19% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tunable quantum logic gate on photonic qubits with a ladder emitter
Derek S. Wang, David D. Dai, P. Narang·Nov 17, 2020
We describe how a ladder emitter can implement a tunable quantum logic gate on photonic qubits encoded in the frequency basis. The ground-to-first excited state of the ladder emitter interacts with the control photon, and the first-to-second excited ...
Scrambling ability of quantum neural network architectures
Yadong Wu, Pengfei Zhang, H. Zhai·Nov 16, 2020
In this letter we propose a general principle for how to build up a quantum neural network with high learning efficiency. Our stratagem is based on the equivalence between extracting information from input state to readout qubit and scrambling inform...
Secure Vehicle Communications Using Proof-of-Nonce Blockchain
N. Ahn, D. H. Lee·Nov 16, 2020
This paper presents an autonomous driving that achieves physical layer security. Proposed vehicle communication is implemented based on Proof-of-Nonce (PoN) blockchain algorithm. PoN blockchain algorithm is a consensus algorithm that can be implement...
Laplacian Eigenmaps with variational circuits: a quantum embedding of graph data
Slimane Thabet, J. Hullo·Nov 10, 2020
With the development of quantum algorithms, high-cost computations are being scrutinized in the hope of a quantum advantage. While graphs offer a convenient framework for multiple real-world problems, their analytics still comes with high computation...
Efficient classical calculation of the Quantum Natural Gradient
Tyson Jones·Nov 5, 2020
Quantum natural gradient has emerged as a superior minimisation technique in quantum variational algorithms. Classically simulating the algorithm running on near-future quantum hardware is paramount in its study, as it is for all variational algorith...
Realization of a quantum Fredkin gate with hybrid degrees of freedom in a single photon
Feiran Wang, Shihao Ru, Yunlong Wang +3 more·Nov 4, 2020
Optimizing the physical realization of quantum gates is important to build a quantum computer. Fredkin gate, also named controlled-swap gate, can be widely applicable in various quantum information processing schemes. In the present research, we prop...
Surpassing the classical limit in magic square game with distant quantum dots coupled to optical cavities
Sinan Bugu, Fatih Ozaydin, T. Kodera·Nov 3, 2020
The emergence of quantum technologies is heating up the debate on quantum supremacy, usually focusing on the feasibility of looking good on paper algorithms in realistic settings, due to the vulnerability of quantum systems to myriad sources of noise...
Post-Hartree–Fock method in quantum chemistry for quantum computer
Yutaka Shikano, Hiroshi C. Watanabe, Ken M. Nakanishi +1 more·Nov 3, 2020
Quantum computational chemistry is a potential application of quantum computers that is expected to effectively solve several quantum-chemistry problems, particularly the electronic structure problem. Quantum computational chemistry can be compared t...
Microwaves in Quantum Computing
J. Bardin, D. Slichter, D. Reilly·Nov 3, 2020
Quantum information processing systems rely on a broad range of microwave technologies and have spurred development of microwave devices and methods in new operating regimes. Here we review the use of microwave signals and systems in quantum computin...
Quantum simulation of light-front parton correlators
M. G. Echevarria, Í. Egusquiza, E. Rico +1 more·Nov 2, 2020
The physics of high-energy colliders relies on the knowledge of different non-perturbative parton correlators, such as parton distribution functions, that encode the information on universal hadron structure and are thus the main building blocks of a...
One-shot quantum error correction of classical and quantum information
Y. Nakata, Eyuri Wakakuwa, H. Yamasaki·Nov 2, 2020
The major goal of quantum communication theory is to determine how much information can be protected from a given quantum noise by encoding operations. The capacity theorems provide answers to the question in various settings. We here provide a capac...
Mitigating Coherent Noise by Balancing Weight-2 Z-Stabilizers
Jingzhen Hu, Q. Liang, Narayanan Rengaswamy +1 more·Oct 31, 2020
Physical platforms such as trapped ions suffer from coherent noise that does not follow a simple stochastic model. Stochastic errors in quantum systems occur randomly but coherent errors are more damaging since they can accumulate in a particular dir...
Qubit guidelines for solid-state spin defects
G. Wolfowicz, F. Heremans, Christopher P. Anderson +5 more·Oct 30, 2020
Defects with associated electron and nuclear spins in solid-state materials have a long history relevant to quantum information science going back to the first spin echo experiments with silicon dopants in the 1950s. Since the turn of the century, th...
Seamless High-Q Microwave Cavities for Multimode Circuit Quantum Electrodynamics.
S. Chakram, Andrew E. Oriani, R. Naik +5 more·Oct 30, 2020
Multimode cavity quantum electrodynamics-where a two-level system interacts simultaneously with many cavity modes-provides a versatile framework for quantum information processing and quantum optics. Because of the combination of long coherence times...
Universal quantum computation and quantum error correction with ultracold atomic mixtures
V. Kasper, D. González-Cuadra, Apoorva Hegde +7 more·Oct 29, 2020
Quantum information platforms made great progress in the control of many-body entanglement and the implementation of quantum error correction, but it remains a challenge to realize both in the same setup. Here, we propose a mixture of two ultracold a...
On construction of finite averaging sets for SL(2,C) via its Cartan decomposition
M. Markiewicz, Janusz Przewocki·Oct 29, 2020
Averaging physical quantities over Lie groups appears in many contexts across the rapidly developing branches of physics like quantum information science or quantum optics. Such an averaging process can be always represented as averaging with respect...
Fast spin-valley-based quantum gates in Si with micromagnets
Peihao Huang, Xuedong Hu·Oct 28, 2020
An electron spin qubit in silicon quantum dots holds promise for quantum information processing due to the scalability and long coherence. An essential ingredient to recent progress is the employment of micromagnets. They generate a synthetic spin–or...
Deterministic multi-mode gates on a scalable photonic quantum computing platform
M. V. Larsen, Xueshi Guo, Casper R. Breum +2 more·Oct 27, 2020
Quantum computing can be realized with numerous different hardware platforms and computational protocols. A highly promising, and potentially scalable, idea is to combine a photonic platform with measurement-induced quantum information processing. In...
A flux tunable superconducting quantum circuit based on Weyl semimetal MoTe2
K. Chiu, D. Qian, J. Qiu +7 more·Oct 27, 2020
Weyl semimetals for their exotic topological properties have drawn considerable attention in many research fields. When in combination with s-wave superconductors, the supercurrent can be carried by their topological surface channels, forming junctio...
Classical restrictions of generic matrix product states are quasi-locally Gibbsian
Yaiza Aragon'es-Soria, J. AAberg, Chae-Yeun Park +1 more·Oct 22, 2020
We show that the norm squared amplitudes with respect to a local orthonormal basis (the classical restriction) of finite quantum systems on one-dimensional lattices can be exponentially well approximated by Gibbs states of local Hamiltonians (i.e., a...