Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Quantum computation of silicon electronic band structure.
F. Cerasoli, Kyle Sherbert, J. Sławińska +1 more·Jun 6, 2020
Development of quantum architectures during the last decade has inspired hybrid classical-quantum algorithms in physics and quantum chemistry that promise simulations of fermionic systems beyond the capability of modern classical computers, even befo...
Quantum Metamaterials: Applications in quantum information science
S. Uriri, Y. Ismail, Francesco Petruccione·Jun 6, 2020
Metamaterials are artificially engineered periodic structures with exceptional optical properties that are not found in conventional materials. However, this definition of metamaterials can be extended if we introduce a quantum degree of freedom by a...
Sign Problems in Quantum Field Theory: Classical and Quantum Approaches
S. Lawrence·Jun 5, 2020
Monte Carlo calculations in the framework of lattice field theory provide non-perturbative access to the equilibrium physics of quantum fields. When applied to certain fermionic systems, or to the calculation of out-of-equilibrium physics, these meth...
Simulating integrated photonic gates using FDTD
A. Dragomir, Cristian Ivan, R. Ionicioiu·Jun 4, 2020
Quantum technologies, such as quantum communication, quantum sensing, quantum imaging and quantum computation, need a platform which is flexible, miniaturisable and works at room temperature. Integrated photonics is a promising and fast-developing pl...
A Monte Carlo approach to the worldline formalism in curved space
O. Corradini, Maurizio Muratori·Jun 4, 2020
We present a numerical method to evaluate worldline (WL) path integrals defined on a curved Euclidean space, sampled with Monte Carlo (MC) techniques. In particular, we adopt an algorithm known as YLOOPS with a slight modification due to the introduc...
The bitter truth about gate-based quantum algorithms in the NISQ era
F. Leymann, Johanna Barzen·Jun 4, 2020
Implementing a gate-based quantum algorithm on an noisy intermediate scale quantum (NISQ) device has several challenges that arise from the fact that such devices are noisy and have limited quantum resources. Thus, various factors contributing to the...
Quantum-Computation and Applications
Bhupesh Bishnoi·Jun 4, 2020
In this research notebook on quantum computation and applications for quantum engineers, researchers, and scientists, we will discuss and summarized the core principles and practical application areas of quantum computation. We first discuss the hist...
Fault-tolerant quantum error correction using error weight parities
Theerapat Tansuwannont, D. Leung·Jun 4, 2020
In quantum error correction using imperfect primitives, errors of high weight arising from a few faults are major concerns since they might not be correctable by the quantum error correcting code. Fortunately, some errors of different weights are log...
Robust All-Optical Single-Shot Readout of NV Centers in Diamond.
Dominik M Irber, Francesco Poggiali, Fei Kong +7 more·Jun 4, 2020
High-fidelity projective readout of a qubit's state in a single experimental repetition is a prerequisite for various quantum protocols of sensing and computing. Achieving single-shot readout is challenging for solid-state qubits. For NitrogenVacancy...
Entangling logical qubits with lattice surgery
A. Erhard, Hendrik Poulsen Nautrup, M. Meth +10 more·Jun 4, 2020
The development of quantum computing architectures from early designs and current noisy devices to fully fledged quantum computers hinges on achieving fault tolerance using quantum error correction1–4. However, these correction capabilities come with...
Quantum computer-aided design: digital quantum simulation of quantum processors
T. Kyaw, Tim Menke, Sukin Sim +5 more·Jun 4, 2020
With the increasing size of quantum processors, sub-modules that constitute the processor hardware will become too large to accurately simulate on a classical computer. Therefore, one would soon have to fabricate and test each new design primitive an...
Algorithms for Quantum Simulation at Finite Energies
Sirui Lu, M. Bañuls, I. Cirac·Jun 4, 2020
We consider a quantum algorithm to compute expectation values of observables in a finite energy interval for many-body problems. It is based on a filtering operator, similar to quantum phase estimation, which projects out energies outside that interv...
Quantum process tomography with unsupervised learning and tensor networks
G. Torlai, C. J. Wood, Atithi Acharya +3 more·Jun 3, 2020
The impressive pace of advance of quantum technology calls for robust and scalable techniques for the characterization and validation of quantum hardware. Quantum process tomography, the reconstruction of an unknown quantum channel from measurement d...
Variational Quantum Singular Value Decomposition
Xin Wang, Zhixin Song, Youle Wang·Jun 3, 2020
Singular value decomposition is central to many problems in engineering and scientific fields. Several quantum algorithms have been proposed to determine the singular values and their associated singular vectors of a given matrix. Although these algo...
Population transfer via a finite temperature state
Wei Huang, B. Zhu, Wéi Wú +3 more·Jun 3, 2020
We study quantum population transfer via a common intermediate state initially in thermal equilibrium with a finite temperature $T$, exhibiting a multi-level Stimulated Raman adiabatic passage structure. We consider two situations for the common inte...
Microwave engineering for semiconductor quantum dots in a cQED architecture
Nathan Holman, J. Dodson, L. F. Edge +5 more·Jun 3, 2020
We develop an engineered microwave environment for coupling high Q superconducting resonators to quantum dots using a multilayer fabrication stack for the dot control wiring. Analytic and numerical models are presented to understand how parasitic cap...
Asymmetric Blockade and Multiqubit Gates via Dipole-Dipole Interactions.
Jeremy T. Young, P. Bienias, R. Belyansky +2 more·Jun 3, 2020
Because of their strong and tunable interactions, Rydberg atoms can be used to realize fast two-qubit entangling gates. We propose a generalization of a generic two-qubit Rydberg-blockade gate to multiqubit Rydberg-blockade gates that involve both ma...
Experimental demonstration of a quantum generative adversarial network for continuous distributions
A. Anand, J. Romero, M. Degroote +1 more·Jun 2, 2020
The potential advantage of machine learning in quantum computers is a topic of intense discussion in the literature. Theoretical, numerical and experimental explorations will most likely be required to understand its power. There has been different a...
Compressed variational quantum eigensolver for the Fermi-Hubbard model.
A. Montanaro, Stasja Stanisic·Jun 1, 2020
The Fermi-Hubbard model is a plausible target to be solved by a quantum computer using the variational quantum eigensolver algorithm. However, problem sizes beyond the reach of classical exact diagonalisation are also beyond the reach of current quan...
Quantum Logspace Algorithm for Powering Matrices with Bounded Norm
Uma Girish, R. Raz, Wei Zhan·Jun 1, 2020
We give a quantum logspace algorithm for powering contraction matrices, that is, matrices with spectral norm at most~1. The algorithm gets as an input an arbitrary $n\times n$ contraction matrix $A$, and a parameter $T \leq \mathrm{poly}(n)$ and outp...