Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,744 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Multi-Community Detection in Signed Graphs Using Quantum Hardware
E. Zahedinejad, Daniel Crawford, C. Adolphs +1 more·Jan 12, 2019
Signed graphs serve as a primary tool for modelling social networks. They can represent relationships between individuals (i.e., nodes) with the use of signed edges. Finding communities in a signed graph is of great importance in many areas, for exam...
Quantum-error-correction-assisted quantum metrology without entanglement
K. C. Tan, S. Omkar, H. Jeong·Jan 11, 2019
In this article we study the role that quantum resources play in quantum error correction assisted quantum metrology (QECQM) schemes. We show that there exist classes of such problems where entanglement is not necessary to retrieve noise free evoluti...
Single-photon emission from single-electron transport in a SAW-driven lateral light-emitting diode
T. Hsiao, A. Rubino, Y. Chung +12 more·Jan 11, 2019
The long-distance quantum transfer between electron-spin qubits in semiconductors is important for realising large-scale quantum computing circuits. Electron-spin to photon-polarisation conversion is a promising technology for achieving free-space or...
Quantum-inspired classical sublinear-time algorithm for solving low-rank semidefinite programming via sampling approaches
Nai-Hui Chia, Tongyang Li, Han-Hsuan Lin +1 more·Jan 10, 2019
Semidefinite programming (SDP) is a central topic in mathematical optimization with extensive studies on its efficient solvers. Recently, quantum algorithms with superpolynomial speedups for solving SDPs have been proposed assuming access to its cons...
Quantifying magic for multi-qubit operations
James Robert Seddon, E. Campbell·Jan 10, 2019
The development of a framework for quantifying ‘non-stabilizerness’ of quantum operations is motivated by the magic state model of fault-tolerant quantum computation and by the need to estimate classical simulation cost for noisy intermediate-scale q...
Sensitivity of quantum speedup by quantum annealing to a noisy oracle
Siddharth Muthukrishnan, T. Albash, Daniel A. Lidar·Jan 10, 2019
The glued-trees problem is the only example known to date for which quantum annealing provides an exponential speedup, albeit by partly using excited state evolution, in an oracular setting. How robust is this speedup to noise on the oracle? To answe...
Markovian quantum simulation of Fenna-Matthew-Olson (FMO) complex using one-parameter semigroup of generators
M.Mahdian, H. Yeganeh·Jan 10, 2019
The application of the theory of open quantum systems in biological processes such as photosynthetic complexes, has recently received renewed attention. In this paper, a quantum algorithm is presented for simulation of arbitrary Markovian dynamics of...
Circuit-Based Quantum Random Access Memory for Classical Data
D. Park, Francesco Petruccione, J. Rhee·Jan 8, 2019
A prerequisite for many quantum information processing tasks to truly surpass classical approaches is an efficient procedure to encode classical data in quantum superposition states. In this work, we present a circuit-based flip-flop quantum random a...
Equivalence Checking of Quantum Finite-State Machines
Qisheng Wang, Junyi Liu, M. Ying·Jan 8, 2019
In this paper, we introduce the model of quantum Mealy machines and study the equivalence checking and minimisation problems of them. Two efficient algorithms are developed for checking equivalence of two states in the same machine and for checking e...
Using ZDDs in the mapping of quantum circuits
Mathias Soeken·Jan 8, 2019
A critical step in quantum compilation is the transformation of a technology-independent quantum circuit into a technology-dependent form for a targeted device. In addition to mapping quantum gates into the supported gate set, it is necessary to map ...
Fine-grained quantum computational supremacy
T. Morimae, Suguru Tamaki·Jan 7, 2019
(pp1089-1115) Tomoyuki Morimae and Suguru Tamaki doi: https://doi.org/10.26421/QIC19.13-14-2 Abstracts: Output probability distributions of several sub-universal quantum computing models cannot be classically efficiently sampled unless some unlikely ...
A machine learning approach for automated fine-tuning of semiconductor spin qubits
J. Teske, S. Humpohl, R. Otten +6 more·Jan 7, 2019
While spin qubits based on gate-defined quantum dots have demonstrated very favorable properties for quantum computing, one remaining hurdle is the need to tune each of them into a good operating regime by adjusting the voltages applied to electrosta...
Comparison of QAOA with Quantum and Simulated Annealing
Michael Streif, M. Leib·Jan 7, 2019
We present a comparison between the Quantum Approximate Optimization Algorithm (QAOA) and two widely studied competing methods, Quantum Annealing (QA) and Simulated Annealing (SA). To achieve this, we define a class of optimization problems with resp...
Machine learning topological phases in real space
N. L. Holanda, M. Griffith·Jan 7, 2019
We develop a supervised machine learning algorithm that is able to learn topological phases of finite condensed-matter systems from bulk data in real lattice space. The algorithm employs diagonalization in real space together with any supervised lear...
Transmission lines and resonators based on quantum Hall plasmonics: Electromagnetic field, attenuation, and coupling to qubits
S. Bosco, D. DiVincenzo·Jan 5, 2019
Quantum Hall edge states have some characteristic features that can prove useful to measure and control solid state qubits. For example, their high voltage to current ratio and their dissipationless nature can be exploited to manufacture low-loss mic...
Quantum Computation of Electronic Transitions Using a Variational Quantum Eigensolver.
R. Parrish, E. Hohenstein, P. McMahon +1 more·Jan 4, 2019
We develop an extension of the variational quantum eigensolver (VQE) algorithm-multistate contracted VQE (MC-VQE)-that allows for the efficient computation of the transition energies between the ground state and several low-lying excited states of a ...
Algorithmic quantum heat engines.
Emre Köse, Selçuk Çakmak, A. Gençten +2 more·Jan 4, 2019
We suggest alternative quantum Otto engines, using heat bath algorithmic cooling with a partner pairing algorithm instead of isochoric cooling and using quantum swap operations instead of quantum adiabatic processes. Liquid state nuclear magnetic res...
Feasibility of single-shot realizations of conditional three-qubit gates in exchange-coupled qubit arrays with local control
V. Stojanović·Jan 4, 2019
We investigate the feasibility of single-shot Toffoli- and Fredkin-gate realizations in qubit arrays with Heisenberg-type exchange interactions between adjacent qubits. As follows from the Lie-algebraic criteria of controllability, such an array is r...
Quantum Conditional Random Field
Yusen Wu, Chao-Hua Yu, Binbin Cai +3 more·Jan 4, 2019
Conditional random field (CRF) is an important probabilistic machine learning model for labeling sequential data, which is widely utilized in natural language processing, bioinformatics and computer vision. However, training the CRF model is computat...
Quantum Spectral Methods for Differential Equations
Andrew M. Childs, Jin-Peng Liu·Jan 4, 2019
Recently developed quantum algorithms address computational challenges in numerical analysis by performing linear algebra in Hilbert space. Such algorithms can produce a quantum state proportional to the solution of a d-dimensional system of linear e...