Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
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...
Twisted photons: new quantum perspectives in high dimensions
Manuel Erhard, R. Fickler, Mario Krenn +1 more·Aug 21, 2017
Twisted photons can be used as alphabets to encode information beyond one bit per single photon. This ability offers great potential for quantum information tasks, as well as for the investigation of fundamental questions. In this review article, we ...
Generalization and demonstration of an entanglement-based Deutsch–Jozsa-like algorithm using a 5-qubit quantum computer
Sayan Gangopadhyay, Manabputra, B. K. Behera +1 more·Aug 21, 2017
This paper demonstrates the use of entanglement resources in quantum speedup by presenting an algorithm which is the generalization of an algorithm proposed by Goswami and Panigrahi (Essentiality of entanglement in a quantum algorithm, 2017. arXiv:17...
Parity-Engineered Light-Matter Interaction.
J. Goetz, F. Deppe, K. Fedorov +6 more·Aug 21, 2017
The concept of parity describes the inversion symmetry of a system and is of fundamental relevance in the standard model, quantum information processing, and field theory. In quantum electrodynamics, parity is conserved and large field gradients are ...
Implementation of Multiparty quantum clock synchronization
X. Kong, T. Xin, Shijie Wei +4 more·Aug 21, 2017
The quantum clock synchronization (QCS) is to measure the time difference among the spatially separated clocks with the principle of quantum mechanics. The first QCS algorithm proposed by Chuang and Jozsa is merely based on two parties, which is furt...
Bounds on absolutely maximally entangled states from shadow inequalities, and the quantum MacWilliams identity
Felix Huber, C. Eltschka, J. Siewert +1 more·Aug 21, 2017
A pure multipartite quantum state is called absolutely maximally entangled (AME), if all reductions obtained by tracing out at least half of its parties are maximally mixed. Maximal entanglement is then present across every bipartition. The existence...
Verifying Quantum Programs: From Quipper to QPMC
Linda Anticoli, C. Piazza, Leonardo Taglialegne +1 more·Aug 21, 2017
In this paper we present a translation from the quantum programming language Quipper to the QPMC model checker, with the main aim of verifying Quipper programs. Quipper is an embedded functional programming language for quantum computation. It is abo...
Bipartite entanglement in AJL's algorithm for three-strand braids
Ri Qu, Weiwei Dong, Juan Wang +3 more·Aug 21, 2017
Aharonov, Jones, and Landau [Algorithmica 55, 395 (2009)] have presented a polynomial quantum algorithm for approximating the Jones polynomial. We investigate the bipartite entanglement properties in AJL's algorithm for three-strand braids. We re-des...
An Introduction to Superconducting Qubits and Circuit Quantum Electrodynamics
Nicholas Materise·Aug 19, 2017
Superconducting qubits have matured from platforms demonstrating and manipulating macroscopic coherent quantum states to realizing exotic quantum states, running surface error correction codes, and single photon detection to name a few recent milesto...
Analysis and design of complex-valued linear systems
Bin Zhou·Aug 17, 2017
This paper studies a class of complex-valued linear systems whose state evolution dependents on both the state vector and its conjugate. The complex-valued linear system comes from linear dynamical quantum control theory and is also encountered when ...
Interference Effects in a Tunable Quantum Point Contact Integrated with an Electronic Cavity
C. Yan, Sanjeev Kumar, M. Pepper +5 more·Aug 17, 2017
We show experimentally how quantum interference can be produced using an integrated quantum system comprising an arch-shaped short quantum wire (or quantum point contact, QPC) of 1D electrons and a reflector forming an electronic cavity. On tuning th...
Performance and structure of single-mode bosonic codes
Victor V. Albert, Kyungjoo Noh, K. Duivenvoorden +9 more·Aug 16, 2017
The early Gottesman, Kitaev, and Preskill (GKP) proposal for encoding a qubit in an oscillator has recently been followed by cat- and binomial-code proposals. Numerically optimized codes have also been proposed, and we introduce codes of this type he...
Braiding by Majorana tracking and long-range CNOT gates with color codes
D. Litinski, F. Oppen·Aug 16, 2017
Color-code quantum computation seamlessly combines Majorana-based hardware with topological error correction. Specifically, as Clifford gates are transversal in two-dimensional color codes, they enable the use of the Majoranas' non-Abelian statistics...
Combinatorial Optimization on Gate Model Quantum Computers: A Survey
E. Zahedinejad, Arman Zaribafiyan·Aug 16, 2017
The advent of quantum computing processors with possibility to scale beyond experimental capacities magnifies the importance of studying their applications. Combinatorial optimization problems can be one of the promising applications of these new dev...
Topological Qubits from Valence Bond Solids.
Dongsheng Wang, I. Affleck, R. Raussendorf·Aug 16, 2017
Topological qubits based on SU(N)-symmetric valence-bond solid models are constructed. A logical topological qubit is the ground subspace with twofold degeneracy, which is due to the spontaneous breaking of a global parity symmetry. A logical Z rotat...
Conditional displacement interaction in ultrastrong-coupling regime
Gangcheng Wang, Qingyong Wang, Yimin Wang +3 more·Aug 15, 2017
We investigate the realization of conditional displacement interaction in the transversal direction in ultrastrongly coupled circuit quantum electrodynamics by adjusting parameters of external magnetic fields. The special interaction is derived in th...
Qubit compatible superconducting interconnects
B. Foxen, J. Mutus, E. Lucero +29 more·Aug 14, 2017
We present a fabrication process for fully superconducting interconnects compatible with superconducting qubit technology. These interconnects allow for the three dimensional integration of quantum circuits without introducing lossy amorphous dielect...
Conditional Dispersive Readout of a CMOS Single-Electron Memory Cell
S. Schaal, Sylvain Barraud, J. Morton +1 more·Aug 14, 2017
Quantum computers require interfaces with classical electronics for efficient qubit control, measurement, and fast data processing. Fabricating the qubit and the classical control layer using the same technology is appealing because it will facilitat...
A programmable two-qubit quantum processor in silicon
T. Watson, S. Phillips, E. Kawakami +9 more·Aug 14, 2017
Now that it is possible to achieve measurement and control fidelities for individual quantum bits (qubits) above the threshold for fault tolerance, attention is moving towards the difficult task of scaling up the number of physical qubits to the larg...
Analysis of quantum information processors using quantum metrology
Mark J. Kandula, P. Kok·Aug 13, 2017
Physical implementations of quantum information processing devices are generally not unique, and we are faced with the problem of choosing the best implementation. Here, we consider the sensitivity of quantum devices to variations in their different ...