Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,854 papers in 12 months (-35% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Tensor Network Contractions
Shi-Ju Ran, E. Tirrito, C. Peng +4 more·Aug 30, 2017
Tensor network (TN), a young mathematical tool of high vitality and great potential, has been undergoing extremely rapid developments in the last two decades, gaining tremendous success in condensed matter physics, atomic physics, quantum information...
Peptides as versatile scaffolds for quantum computing
Lorena E. Rosaleny, A. Forment‐Aliaga, Helena Prima-Garc'ia +14 more·Aug 30, 2017
In this work we showcase the potential of peptides as versatile scaffolds for quantum computing and molecular spintronics. In particular, we focus on lanthanide-binding tags, which were originally developed in the field of biotechnology for the study...
Quantum-Enhanced Reinforcement Learning for Finite-Episode Games with Discrete State Spaces
F. Neukart, David Von Dollen, Christian Seidel +1 more·Aug 30, 2017
Quantum annealing algorithms belong to the class of metaheuristic tools, applicable for solving binary optimization problems. Hardware implementations of quantum annealing, such as the quantum annealing machines produced by D-Wave Systems, have been ...
Optimized Surface Code Communication in Superconducting Quantum Computers
Ali JavadiAbhari, P. Gokhale, Adam Holmes +4 more·Aug 30, 2017
Quantum computing (QC) is at the cusp of a revolution. Machines with 100 quantum bits (qubits) are anticipated to be operational by 2020 [30, 73], and several-hundred-qubit machines are around the corner. Machines of this scale have the capacity to d...
Quantum Computing with Endohedral Fullerenes
W. Harneit·Aug 30, 2017
We review the present state of the art in using the endohedral fullerenes N@C60 and P@C60 as qubits in a spin quantum computer. After a brief introduction to spin quantum computing, we first discuss the rich spin structure of these endohedral fullere...
Diagonal quantum discord
Zi-Wen Liu, Ryuji Takagi, S. Lloyd·Aug 30, 2017
Quantum discord measures quantum correlation by comparing the quantum mutual information with the maximal amount of mutual information accessible to a quantum measurement. This paper analyzes the properties of diagonal discord, a simplified version o...
Quantum simulation from the bottom up: the case of rebits
Dax Enshan Koh, M. Niu, Theodore J. Yoder·Aug 30, 2017
Typically, quantum mechanics is thought of as a linear theory with unitary evolution governed by the Schrödinger equation. While this is technically true and useful for a physicist, with regards to computation it is an unfortunately narrow point of v...
Teleportation-assisted optical controlled-sign gates
Fabian Ewert, P. Loock·Aug 29, 2017
Reliable entangling gates for qubits encoded in single-photon states represent a major challenge on the road to scalable quantum computing architectures based on linear optics. In this work, we present two approaches to develop high-fidelity, near-de...
Tight upper bound for the maximal quantum value of the Svetlichny operators
Ming Li, Shuqian Shen, N. Jing +2 more·Aug 28, 2017
It is a challenging task to detect genuine multipartite nolocality (GMNL). In this paper, the problem is considered via computing the maximal quantum value of Svetlichny operators for three-qubit systems and a tight upper bound is obtained. The const...
Macroscopic instructions vs microscopic operations in quantum circuits
A. Veitia, M. D. da Silva, R. Blume-Kohout +1 more·Aug 28, 2017
In many experiments on microscopic quantum systems, it is implicitly assumed that when a macroscopic procedure or "instruction" is repeated many times -- perhaps in different contexts -- each application results in the same microscopic quantum operat...
Ultrahigh Error Threshold for Surface Codes with Biased Noise.
David K. Tuckett, S. Bartlett, S. Flammia·Aug 28, 2017
We show that a simple modification of the surface code can exhibit an enormous gain in the error correction threshold for a noise model in which Pauli Z errors occur more frequently than X or Y errors. Such biased noise, where dephasing dominates, is...
On the Generation of Random Ensembles of Qubits and Qutrits Computing Separability Probabilities for Fixed Rank States
A. Khvedelidze, I. Rogojin·Aug 25, 2017
The generation of random mixed states is discussed, aiming for the computation of probabilistic characteristics of composite finite dimensional quantum systems. In particular, we consider the generation of random Hilbert-Schmidt and Bures ensembles o...
An Experimental Microarchitecture for a Superconducting Quantum Processor
X. Fu, M. A. Rol, C. C. Bultink +10 more·Aug 25, 2017
Quantum computers promise to solve certain problems that are intractable for classical computers, such as factoring large numbers and simulating quantum systems. To date, research in quantum computer engineering has focused primarily at opposite ends...
Verifier-on-a-Leash: new schemes for verifiable delegated quantum computation, with quasilinear resources
Andrea Coladangelo, A. Grilo, S. Jeffery +1 more·Aug 24, 2017
The problem of reliably certifying the outcome of a computation performed by a quantum device is rapidly gaining relevance. We present two protocols for a classical verifier to verifiably delegate a quantum computation to two non-communicating but en...
Routing entanglement in the quantum internet
M. Pant, H. Krovi, D. Towsley +5 more·Aug 23, 2017
Remote quantum entanglement can enable numerous applications including distributed quantum computation, secure communication, and precision sensing. We consider how a quantum network—nodes equipped with limited quantum processing capabilities connect...
Three-Dimensional Color Code Thresholds via Statistical-Mechanical Mapping.
Aleksander Kubica, M. Beverland, F. Brandão +2 more·Aug 23, 2017
Three-dimensional (3D) color codes have advantages for fault-tolerant quantum computing, such as protected quantum gates with relatively low overhead and robustness against imperfect measurement of error syndromes. Here we investigate the storage thr...
Volume of the space of qubit-qubit channels and state transformations under random quantum channels
A. Lovas, Attila Andai·Aug 23, 2017
The simplest building blocks for quantum computations are the qubit-qubit quantum channels. In this paper, we analyze the structure of these channels via their Choi representation. The restriction of a quantum channel to the space of classical states...
Spatial noise filtering through error correction for quantum sensing
David Layden, P. Cappellaro·Aug 22, 2017
Quantum systems can be used to measure various quantities in their environment with high precision. Often, however, their sensitivity is limited by the decohering effects of this same environment. Dynamical decoupling schemes are widely used to filte...
Integrated-optics heralded controlled-NOT gate for polarization-encoded qubits
Jonas Zeuner, Aditya N. Sharma, Max Tillmann +5 more·Aug 22, 2017
Recent progress in integrated-optics technology has made photonics a promising platform for quantum networks and quantum computation protocols. Integrated optical circuits are characterized by small device footprints and unrivalled intrinsic interfer...
Classical multiparty computation using quantum resources
M. Clementi, Anna Pappa, A. Eckstein +3 more·Aug 21, 2017
In this work, we demonstrate a way to perform classical multiparty computing among parties with limited computational resources. Our method harnesses quantum resources to increase the computational power of the individual parties. We show how a set o...