Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,745 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Near-Hashing-Bound Multiple-Rate Quantum Turbo Short-Block Codes
Daryus Chandra, Zunaira Babar, S. Ng +1 more·Mar 26, 2019
Quantum stabilizer codes (QSCs) suffer from a low quantum coding rate since they have to recover the quantum bits (qubits) in the face of both bit-flip and phase-flip errors. In this treatise, we conceive a low-complexity concatenated quantum turbo c...
A practicable guide to the quantum computation architectures
H. Ian, Bill Chen, Wei Zhao·Mar 26, 2019
The primordial model of quantum computation was introduced over thirty years ago and the first quantum algorithms have appeared for over twenty years. Yet the exact architectures for quantum computer seem foreign to an undergraduate student major in ...
Hybrid classical-quantum linear solver using Noisy Intermediate-Scale Quantum machines
Chih-Chieh Chen, Shiue-yuan Shiau, Ming-Feng Wu +1 more·Mar 26, 2019
We propose a realistic hybrid classical-quantum linear solver to solve systems of linear equations of a specific type, and demonstrate its feasibility with Qiskit on IBM Q systems. This algorithm makes use of quantum random walk that runs in O\docume...
Advantage Distillation for Device-Independent Quantum Key Distribution.
E. Y. Tan, C. Lim, R. Renner·Mar 25, 2019
Device-independent quantum key distribution (DIQKD) offers the prospect of distributing secret keys with only minimal security assumptions, by making use of a Bell violation. However, existing DIQKD security proofs have low noise tolerances, making a...
Decoding quantum error correction with Ising model hardware
Joschka Roffe, S. Zohren, D. Horsman +1 more·Mar 25, 2019
Fault tolerant quantum computers will require efficient co-processors for real-time decoding of their adopted quantum error correction protocols. In this work we examine the possibility of using specialised Ising model hardware to perform this decodi...
Machine learning and the physical sciences
Giuseppe Carleo, I. Cirac, Kyle Cranmer +5 more·Mar 25, 2019
Machine learning (ML) encompasses a broad range of algorithms and modeling tools used for a vast array of data processing tasks, which has entered most scientific disciplines in recent years. This article reviews in a selective way the recent researc...
Locally accurate MPS approximations for ground states of one-dimensional gapped local Hamiltonians
A. Dalzell, F. Brandão·Mar 25, 2019
A key feature of ground states of gapped local 1D Hamiltonians is their relatively low entanglement --- they are well approximated by matrix product states (MPS) with bond dimension scaling polynomially in the length N of the chain, while general sta...
Next Steps in Quantum Computing: Computer Science's Role
M. Martonosi, M. Rötteler·Mar 25, 2019
The computing ecosystem has always had deep impacts on society and technology and profoundly changed our lives in myriads of ways. Despite decades of impressive Moore's Law performance scaling and other growth in the computing ecosystem there are non...
Robust quantum control against clock noises in multiqubit systems
Haijin Ding, R. Wu·Mar 25, 2019
High-precision manipulation of multi-qubit quantum systems requires strictly clocked and synchronized multi-channel control signals. However, practical Arbitrary Waveform Generators (AWGs) always suffer from random signal jitters and channel latencie...
Approximating local properties by tensor network states with constant bond dimension
Yichen Huang·Mar 24, 2019
Classical simulation of quantum many-body systems is a fundamental challenge due to their exponentially large Hilbert spaces. Tensor network states are a powerful ansatz to efficiently represent many physically relevant quantum states. A key question...
A link layer protocol for quantum networks
A. Dahlberg, M. Skrzypczyk, T. Coopmans +9 more·Mar 23, 2019
Quantum communication brings radically new capabilities that are provably impossible to attain in any classical network. Here, we take the first step from a physics experiment to a quantum internet system. We propose a functional allocation of a quan...
Non-covalent quantum machine learning corrections to density functionals.
P. Mezei, Anatole van Lilienfeld·Mar 21, 2019
We present non-covalent quantum machine learning corrections to six physically motivated density functionals with systematic errors. We demonstrate that the missing massively non-local and non-additive physical effects can be recovered by the quantum...
Track clustering with a quantum annealer for primary vertex reconstruction at hadron colliders
Souvik Das, A. Wildridge, A. Jung·Mar 21, 2019
Clustering of charged particle tracks along the beam axis is the first step in reconstructing the positions of hadronic interactions, also known as primary vertices, at hadron collider experiments. We use a 2036 qubit D-Wave quantum annealer to perfo...
Entanglement negativity as a universal non-Markovianity witness
J. Kołodyński, S. Rana, A. Streltsov·Mar 21, 2019
In order to engineer an open quantum system and its evolution, it is essential to identify and control the memory effects. These are formally attributed to the non-Markovianity of dynamics that manifests itself by the evolution being indivisible in t...
Enhanced Multiqubit Phase Estimation in Noisy Environments by Local Encoding.
Massimiliano Proietti, M. Ringbauer, Francesco Graffitti +7 more·Mar 21, 2019
The first generation of multiqubit quantum technologies will consist of noisy, intermediate-scale devices for which active error correction remains out of reach. To exploit such devices, it is thus imperative to use passive error protection that meet...
Achieving the Heisenberg limit under general Markovian noise using quantum error correction without ancilla
Yi Peng, H. Fan·Mar 19, 2019
Practical quantum metrology is generally hindered by environment noise which can demolish the advantage of breaching the shot-noise limit provided by quantum mechanics. Recently, quantum error-correction (QEC) codes have been developed for restoring ...
Benchmarking an 11-qubit quantum computer
K. Wright, K. Beck, S. Debnath +21 more·Mar 19, 2019
The field of quantum computing has grown from concept to demonstration devices over the past 20 years. Universal quantum computing offers efficiency in approaching problems of scientific and commercial interest, such as factoring large numbers, searc...
Remote Blind State Preparation with Weak Coherent Pulses in the Field.
Yang-Fan Jiang, Kejin Wei, Liang Huang +11 more·Mar 19, 2019
Quantum computing has seen tremendous progress in past years. Due to implementation complexity and cost, the future path of quantum computation is strongly believed to delegate computational tasks to powerful quantum servers on the cloud. Universal b...
A novel quantum grid search algorithm and its application
Alok Shukla, P. Vedula·Mar 18, 2019
In this paper we present a novel quantum algorithm, namely the quantum grid search algorithm, to solve a special search problem. Suppose $ k $ non-empty buckets are given, such that each bucket contains some marked and some unmarked items. In one tri...
Experimental Challenges of Implementing Quantum Phase Estimation Algorithms on IBM Quantum Computer
Hamed Mohammadbagherpoor, Young-Hyun Oh, Anand Singh +2 more·Mar 18, 2019
Many researchers have been heavily investigated on quantum phase estimation (QPE) algorithms to find the unknown phase, since QPE is the core building block of the most quantum algorithms such as the Shor's factoring algorithm, quantum sampling algor...