Papers
Live trends in quantum computing research, updated daily from arXiv.
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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
Novel reconciliation protocol based on spinal code for continuous-variable quantum key distribution
Xuan Wen, Qiong Li, Haokun Mao +3 more·Sep 27, 2019
Reconciliation is a crucial procedure in post-processing of continuous-variable quantum key distribution (CV-QKD) system, which is used to make two distant legitimate parties share identical corrected keys. The adaptive reconciliation is necessary fo...
Quantum Annealing Algorithm for Expected Shortfall based Dynamic Asset Allocation
S. Dasgupta, A. Banerjee·Sep 27, 2019
The 2008 mortgage crisis is an example of an extreme event. Extreme value theory tries to estimate such tail risks. Modern finance practitioners prefer Expected Shortfall based risk metrics (which capture tail risk) over traditional approaches like v...
Nonunitary Operations for Ground-State Calculations in Near-Term Quantum Computers.
G. Mazzola, Pauline J. Ollitrault, P. Barkoutsos +1 more·Sep 27, 2019
We introduce a quantum Monte Carlo inspired reweighting scheme to accurately compute energies from optimally short quantum circuits. This effectively hybrid quantum-classical approach features both entanglement provided by a short quantum circuit, an...
Resource-efficient digital quantum simulation of d-level systems for photonic, vibrational, and spin-s Hamiltonians
Nicolas P. D. Sawaya, Tim Menke, T. Kyaw +3 more·Sep 27, 2019
Simulation of quantum systems is expected to be one of the most important applications of quantum computing, with much of the theoretical work so far having focused on fermionic and spin-12\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackag...
Quantum Algorithm for Finding the Optimal Variable Ordering for Binary Decision Diagrams
S. Tani·Sep 27, 2019
An ordered binary decision diagram (OBDD) is a directed acyclic graph that represents a Boolean function. OBDDs are also known as special cases of oblivious read-once branching programs in the field of complexity theory. Since OBDDs have many nice pr...
Support Vector Machines on Noisy Intermediate Scale Quantum Computers
Jialei Yang, Ahsan Javed Awan, G. Vall-llosera·Sep 26, 2019
Support vector machine algorithms are considered essential for the implementationof automation in a radio access network. Specifically, they are critical inthe prediction of the quality of user exp ...
Fast and Simple Qubit-Based Synchronization for Quantum Key Distribution
L. Calderaro, A. Stanco, C. Agnesi +4 more·Sep 26, 2019
We propose Qubit4Sync, a synchronization method for Quantum Key Distribution (QKD) setups, based on the same qubits exchanged during the protocol and without requiring additional hardware other than the one necessary to prepare and measure the quantu...
Quantum information processing with closely-spaced diamond color centers in strain and magnetic fields [Invited]
Zhujing Xu, Z. Yin, Q. Han +1 more·Sep 26, 2019
Electron and nuclear spins of diamond nitrogen-vacancy (NV) centers are good candidates for quantum information processing as they have long coherence time and can be initialized and read out optically. However, creating a large number of coherently ...
A Jastrow-type decomposition in quantum chemistry for low-depth quantum circuits
Yutaka Matsuzawa, Yuki Kurashige·Sep 26, 2019
We propose an efficient ${\cal O}(N^2)$-parameter ansatz that consists of a sequence of exponential operators, each of which is a unitary variant of Neuscamman's cluster Jastrow operator. The ansatz can also be derived as a decomposition of T$_2$ amp...
Calculation of the Green's function on near-term quantum computers
Suguru Endo, I. Kurata, Yuya O. Nakagawa·Sep 26, 2019
The Green's function plays a crucial role when studying the nature of quantum many-body systems, especially strongly-correlated systems. Although the development of quantum computers in the near future may enable us to compute energy spectra of class...
Classical algorithms for quantum mean values
S. Bravyi, David Gosset, R. Movassagh·Sep 25, 2019
Quantum algorithms hold the promise of solving certain computational problems dramatically faster than their classical counterparts. The latest generation of quantum processors with ~50 qubits are expected to be at the brink of outperforming classica...
Quantum semi-supervised kernel learning
Seyran Saeedi, Ali (Aliakbar) Panahi, Tom Arodz·Sep 25, 2019
Quantum machine learning methods have the potential to facilitate learning using extremely large datasets. While the availability of data for training machine learning models is steadily increasing, oftentimes it is much easier to collect feature vec...
Quantum Entanglement in Time for a Distributed Ledger
Nils Paz, S. Silverman, J. Harmon·Sep 25, 2019
Distributed Ledger Technology (DLT) is a shared, synchronized and replicated data spread spatially and temporally with no centralized administration and/or storage. Each node has a complete and identical set of records. All participants contribute to...
Adiabatic electron charge transfer between two quantum dots in presence of 1/f noise
Jan A. Krzywda, Ł. Cywiński·Sep 25, 2019
Controlled transfer of a single electron through a chain of quantum dots has been recently achieved in GaAs and Si/SiGe based quantum dots, opening prospects for turning stationary spin qubits into mobile ones, and solving in this way the problem of ...
Dynamically corrected gates suppressing spatiotemporal error correlations as measured by randomized benchmarking
C. Edmunds, Cornelius Hempel, R. Harris +3 more·Sep 24, 2019
Quantum error correction provides a path to large-scale quantum computers, but is built on challenging assumptions about the characteristics of the underlying errors. In particular, the mathematical assumption of statistically independent errors in q...
Number-conserving analysis of measurement-based braiding with Majorana zero modes
Christina Knapp, J. Väyrynen, R. Lutchyn·Sep 24, 2019
Majorana-based quantum computation seeks to encode information nonlocally in pairs of Majorana zero modes, thereby isolating qubit states from a local noisy environment. In addition to long coherence times, the attractiveness of Majorana-based quantu...
Computational Chemistry on Quantum Computers
Jerimiah Wright·Sep 24, 2019
The purpose of this experiment was to use the known analytical techniques to study the creation, simulation, and measurements of molecular Hamiltonians. The techniques used consisted of the Linear Combination of Atomic Orbitals (LCAO), the Linear Com...
Mixed algorithmic-analog simulation of many body dynamics using interaction of fixed-frequency superconducting qubits
D. Babukhin, A. Zhukov, W. Pogosov·Sep 24, 2019
In recent years there was a huge experimental progress towards the development of prototypes of algorithmic quantum processors. These quantum machines are not free from imperfections and various technological and scientific problems remain to be solv...
On the need for large Quantum depth
Nai-Hui Chia, Kai-Min Chung, C. Lai·Sep 23, 2019
Near-term quantum computers are likely to have small depths due to short coherence time and noisy gates. A natural approach to leverage these quantum computers is interleaving them with classical computers. Understanding the capabilities and limits o...
Quantum digital cooling
S. Polla, Y. Herasymenko, T. O’Brien·Sep 23, 2019
We introduce a method for digital preparation of ground states of a simulated Hamiltonians, inspired by cooling in nature and adapted to leverage the capabilities of digital quantum hardware. The cold bath is simulated by a single ancillary qubit, wh...