Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Coherence as resource in scattering quantum walk search on complete graph
Yun-Long Su, Siyuan Liu, Xiao-Hui Wang +2 more·Apr 17, 2017
We investigate the behavior of coherence in scattering quantum walk search on complete graph under the condition that the total number of vertices of the graph is significantly larger than the marked number of vertices we are searching, N ≫ v. We fin...
Hardware-efficient variational quantum eigensolver for small molecules and quantum magnets
A. Kandala, Antonio Mezzacapo, K. Temme +4 more·Apr 17, 2017
Quantum computers can be used to address electronic-structure problems and problems in materials science and condensed matter physics that can be formulated as interacting fermionic problems, problems which stretch the limits of existing high-perform...
A NASA perspective on quantum computing: Opportunities and challenges
R. Biswas, Zhang Jiang, Kostya Kechezhi +10 more·Apr 17, 2017
NASA Perspective on Quantum Computing. In the last couple of decades, the world has seen several stunning instances of quantum algorithms that provably outperform the best classical algorithms. For most problems, however, it is currently unknown whet...
Optimal attacks on qubit-based Quantum Key Recycling
D. Leermakers, B. Škorić·Apr 15, 2017
Quantum Key Recycling (QKR) is a quantum cryptographic primitive that allows one to reuse keys in an unconditionally secure way. By removing the need to repeatedly generate new keys, it improves communication efficiency. Škorić and de Vries recently ...
Analysis of coined quantum walks with renormalization
S. Boettcher, Shanshan Li·Apr 15, 2017
We introduce a new framework to analyze quantum algorithms with the renormalization group (RG). To this end, we present a detailed analysis of the real-space RG for discrete-time quantum walks on fractal networks and show how deep insights into the a...
Qumin, a minimalist quantum programming language
Alexander Singh, Konstantinos Giannakis, T. Andronikos·Apr 14, 2017
In this work we introduce Qumin, a novel quantum programming language with a focus on providing an easy to use, minimalist, high-level, and easily extensible platform for quantum programming. Qumin's design concentrates on encompassing the various in...
Quantum error-correction failure distributions: Comparison of coherent and stochastic error models
J. Barnes, Colin J. Trout, D. Lucarelli +1 more·Apr 13, 2017
We compare failure distributions of quantum error correction circuits for stochastic errors and coherent errors. We utilize a fully coherent simulation of a fault tolerant quantum error correcting circuit for a $d=3$ Steane and surface code. We find ...
Large-Scale Description of Interacting One-Dimensional Bose Gases: Generalized Hydrodynamics Supersedes Conventional Hydrodynamics.
B. Doyon, J. Dubail, R. Konik +1 more·Apr 13, 2017
The theory of generalized hydrodynamics (GHD) was recently developed as a new tool for the study of inhomogeneous time evolution in many-body interacting systems with infinitely many conserved charges. In this Letter, we show that it supersedes the w...
Scalable on-chip quantum state tomography
James G. Titchener, M. Gräfe, R. Heilmann +3 more·Apr 12, 2017
Quantum information systems are on a path to vastly exceed the complexity of any classical device. The number of entangled qubits in quantum devices is rapidly increasing, and the information required to fully describe these systems scales exponentia...
Hardness of classically sampling one clean qubit model with constant total variation distance error
T. Morimae·Apr 12, 2017
The one clean qubit model (or the DQC1 model) is a restricted model of quantum computing where only a single input qubit is pure and all other input qubits are maximally mixed. In spite of the severe restriction, the model can solve several problems ...
Axiomatic and operational connections between the l 1 -norm of coherence and negativity
Huangjun Zhu, Masahito Hayashi, Lin Chen·Apr 10, 2017
Quantum coherence plays a central role in various research areas. The ${l}_{1}$-norm of coherence is one of the most important coherence measures that are easily computable, but it is not easy to find a simple interpretation. We show that the ${l}_{1...
Thermal Entanglement, Specific Heat and Quantum Discord in Open Quantum Systems Including Non-Markovian Processes
B. Lari, H. Hassanabadi·Apr 10, 2017
Entanglement (EN) is a determinative correlation in designation of quantum gates and quantum memories. All quantum operations which are assembled by quantum circuits, are exposed to environment. However, quantum discord (QD) as a new key of resource ...
Distributed Quantum Computing Utilizing Multiple Codes on Imperfect Hardware
Shota Nagayama·Apr 9, 2017
Quantum bits have technological imperfections. Additionally, the capacity of a component that can be implemented feasibly is limited. Therefore, distributed quantum computation is required to scale up quantum computers. This dissertation presents a ...
Quantum ensembles of quantum classifiers
M. Schuld, Francesco Petruccione·Apr 7, 2017
Quantum machine learning witnesses an increasing amount of quantum algorithms for data-driven decision making, a problem with potential applications ranging from automated image recognition to medical diagnosis. Many of those algorithms are implement...
Entanglement and the truncated moment problem
F. Bohnet-Waldraff, D. Braun, O. Giraud·Apr 7, 2017
We map the quantum entanglement problem onto the mathematically well-studied truncated moment problem. This yields a necessary and sufficient condition for separability that can be checked by a hierarchy of semidefinite programs. The algorithm always...
Optimizing adiabatic quantum program compilation using a graph-theoretic framework
T. Goodrich, Blair D. Sullivan, T. Humble·Apr 6, 2017
Adiabatic quantum computing has evolved in recent years from a theoretical field into an immensely practical area, a change partially sparked by D-Wave System’s quantum annealing hardware. These multimillion-dollar quantum annealers offer the potenti...
Extracting Entanglement Geometry from Quantum States.
Katharine Hyatt, J. Garrison, B. Bauer·Apr 6, 2017
Tensor networks impose a notion of geometry on the entanglement of a quantum system. In some cases, this geometry is found to reproduce key properties of holographic dualities, and subsequently much work has focused on using tensor networks as tracta...
Nondeterministic quantum computation via ground state cooling and ultrafast Grover algorithm
Pavlo V. Pyshkin, Da-Wei Luo, J. You +1 more·Apr 5, 2017
Over the last decades, there have been many proposals for quantum computation. One of the promising candidates is adiabatic quantum computation (AQC). The central idea of AQC is about finding the ground state of a system with a problem Hamiltonian vi...
Quantum Control via a Genetic Algorithm of the Field Ionization Pathway of a Rydberg Electron
Vincent C. Gregoric, X. Kang, Zhimin Liu +3 more·Apr 5, 2017
Quantum control of the pathway along which a Rydberg electron field ionizes is experimentally and computationally demonstrated. Selective field ionization is typically done with a slowly rising electric field pulse. The $(1/n^*)^4$ scaling of the cla...
0.5 Petabyte Simulation of a 45-Qubit Quantum Circuit
Thomas Häner, Damian S. Steiger·Apr 4, 2017
Near-term quantum computers will soon reach sizes that are challenging to directly simulate, even when employing the most powerful supercomputers. Yet, the ability to simulate these early devices using classical computers is crucial for calibration, ...