Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,672 papers in 12 months (-39% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optomechanical interface between telecom photons and spin quantum memory
Prasoon K. Shandilya, D. Lake, Matthew Mitchell +2 more·Feb 9, 2021
Quantum networks enable a broad range of practical and fundamental applications spanning from distributed quantum computing to sensing and metrology. A cornerstone of such networks is an interface between telecom photons and quantum memories, which h...
Loss-tolerant concatenated Bell-state measurement with encoded coherent-state qubits for long-range quantum communication
Seok-Hyung Lee, Seung-Woo Lee, Hyunseok Jeong·Feb 8, 2021
The coherent-state qubit is a promising candidate for optical quantum information processing due to its nearly-deterministic nature of the Bell-state measurement (BSM). However, its nonorthogonality incurs difficulties such as failure of the BSM. One...
Compact gate-based read-out of multiplexed quantum devices with a cryogenic CMOS active inductor
L. Guevel, G. Billiot, S. D. Franceschi +4 more·Feb 8, 2021
In the strive for scalable quantum processors, significant effort is being devoted to the development of cryogenic classical hardware for the control and readout of a growing number of qubits. Here we report on a cryogenic circuit incorporating a CMO...
Continuous-time dynamics and error scaling of noisy highly entangling quantum circuits
Kaelan Donatella, Zakari Denis, A. Le Boité +1 more·Feb 8, 2021
We investigate the continuous-time dynamics of highly-entangling intermediate-scale quantum circuits in the presence of dissipation and decoherence. By compressing the Hilbert space to a time-dependent"corner"subspace that supports faithful represent...
A new quantum algorithm for the hidden shift problem in $\mathbb{Z}_{2^t}^n$
G. Cs'aji·Feb 8, 2021
In this paper we make a step towards a time and space efficient algorithm for the hidden shift problem for groups of the form $\mathbb{Z}_k^n$. We give a solution to the case when $k$ is a power of 2, which has polynomial running time in $n$, and onl...
Quantum Computers: Engines for Next Industrial Revolution
Zhenghan Wang·Feb 8, 2021
Although the current information revolution is still unfolding, the next industrial revolution is already rearing its head. A second quantum revolution based on quantum technology will power this new industrial revolution with quantum computers as it...
Quantum machine learning with adaptive linear optics
Ulysse Chabaud, D. Markham, A. Sohbi·Feb 8, 2021
We study supervised learning algorithms in which a quantum device is used to perform a computational subroutine – either for prediction via probability estimation, or to compute a kernel via estimation of quantum states overlap. We design implementat...
Long-time simulations with high fidelity on quantum hardware
J. Gibbs, Kaitlin Gili, Zoe Holmes +5 more·Feb 8, 2021
Moderate-size quantum computers are now publicly accessible over the cloud, opening the exciting possibility of performing dynamical simulations of quantum systems. However, while rapidly improving, these devices have short coherence times, limiting ...
Quantum Algorithm for DOA Estimation in Hybrid Massive MIMO
Fanxu Meng·Feb 8, 2021
The direction of arrival (DOA) estimation in array signal processing is an important research area. The effectiveness of the direction of arrival greatly determines the performance of multi-input multioutput (MIMO) antenna systems. The multiple signa...
Quantum Divide and Compute: Exploring the Effect of Different Noise Sources
T. Ayral, François-Marie Le Régent, Zain Saleem +2 more·Feb 7, 2021
Our recent work (Ayral et al. in Proceedings of IEEE computer society annual symposium on VLSI, ISVLSI, pp 138–140, 2020. https://doi.org/10.1109/ISVLSI49217.2020.00034) showed the first implementation of the Quantum Divide and Compute (QDC) method, ...
Quantum Finite Volume Method for Computational Fluid Dynamics with Classical Input and Output
Zhao-Yun Chen, Cheng Xue, Si-Ming Chen +5 more·Feb 6, 2021
Computational fluid dynamics (CFD) is a branch of fluid mechanics that uses numerical methods to solve fluid flows. The finite volume method (FVM) is an important one. In FVM, space is discretized to many grid cells. When the number of grid cells gro...
Strongly Universal Hamiltonian Simulators
Leo Zhou, D. Aharonov·Feb 5, 2021
A universal family of Hamiltonians can be used to simulate any local Hamiltonian by encoding its full spectrum as the low-energy subspace of a Hamiltonian from the family. Many spin-lattice model Hamiltonians—such as Heisenberg or XY interaction on t...
Graphical Language with Delayed Trace: Picturing Quantum Computing with Finite Memory
T. Carette, Marc de Visme, S. Perdrix·Feb 5, 2021
Graphical languages, like quantum circuits or ZX-calculus, have been successfully designed to represent (memoryless) quantum computations acting on a finite number of qubits. Meanwhile, delayed traces have been used as a graphical way to represent fi...
2022 Roadmap on integrated quantum photonics
G. Moody, V. Sorger, P. Juodawlkis +47 more·Feb 5, 2021
Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quan...
Decomposition of Clifford Gates
Tefjol Pllaha, Kalle Volanto, O. Tirkkonen·Feb 5, 2021
In fault-tolerant quantum computation and quan-tum error-correction one is interested on Pauli matrices that commute with a circuit/unitary. This information is encoded by the support (Pllaha et al., 2020) of the given circuit/unitary. We provide a f...
A quantum-logic gate between distant quantum-network modules
S. Daiss, S. Langenfeld, S. Welte +5 more·Feb 5, 2021
Quantum gating at a distance The processing of quantum information is reliant on the encoding and manipulation of quantum states of a qubit. Superconducting circuits are the most advanced platform at present, but there is an issue with cross-talk bet...
Effects of quantum resources and noise on the statistical complexity of quantum circuits
Kaifeng Bu, Dax Enshan Koh, Lu Li +2 more·Feb 5, 2021
We investigate how the addition of quantum resources changes the statistical complexity of quantum circuits by utilizing the framework of quantum resource theories. Measures of statistical complexity that we consider include the Rademacher complexity...
Improving the Variational Quantum Eigensolver Using Variational Adiabatic Quantum Computing
Stuart M. Harwood, Dimitar Trenev, Spencer T. Stober +4 more·Feb 4, 2021
The variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm for finding the minimum eigenvalue of a Hamiltonian that involves the optimization of a parameterized quantum circuit. Since the resulting optimization problem is in ge...
Analytic Design of Accelerated Adiabatic Gates in Realistic Qubits: General Theory and Applications to Superconducting Circuits
F. Setiawan, Peter Groszkowski, Hugo Ribeiro +1 more·Feb 4, 2021
Shortcuts to adiabaticity is a general method for speeding up adiabatic quantum protocols, and has many potential applications in quantum information processing. Unfortunately, analytically constructing shortcuts to adiabaticity for systems having co...
Holographic tensor network models and quantum error correction: a topical review
A. Jahn, J. Eisert·Feb 4, 2021
Recent progress in studies of holographic dualities, originally motivated by insights from string theory, has led to a confluence with concepts and techniques from quantum information theory. A particularly successful approach has involved capturing ...