Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,851 papers in 12 months (-35% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
A Quantum Algorithm for Finding Common Matches between Databases with Reliable Behavior
Khaled El-Wazan·Apr 4, 2017
Given $\kappa$ databases of unstructured entries, we propose a quantum algorithm to find the common entries between those databases. The proposed algorithm requires $\mathcal{O}(\kappa \sqrt{N})$ queries to find the common entries, where $N$ is the n...
Quantum advantage with shallow circuits
S. Bravyi, David Gosset, R. König·Apr 3, 2017
Quantum outperforms classical Quantum computers are expected to be better at solving certain computational problems than classical computers. This expectation is based on (well-founded) conjectures in computational complexity theory, but rigorous com...
Problem of quantifying quantum correlations with non-commutative discord
A. P. Majtey, D. Bussandri, T. Osán +2 more·Apr 3, 2017
In this work we analyze a non-commutativity measure of quantum correlations recently proposed by Guo (Sci Rep 6:25241, 2016). By resorting to a systematic survey of a two-qubit system, we detected an undesirable behavior of such a measure related to ...
Information Theoretically Secure Hypothesis Test for Temporally Unstructured Quantum Computation (Extended Abstract)
Daniel Mills, Anna Pappa, Theodoros Kapourniotis +1 more·Apr 1, 2017
The efficient certification of classically intractable quantum devices has been a central research question for some time. However, to observe a "quantum advantage", it is believed that one does not need to build a large scale universal quantum compu...
Implementation of a quantum controlled-SWAP gate with photonic circuits
T. Ono, R. Okamoto, Masato Tanida +2 more·Mar 31, 2017
Quantum information science addresses how the processing and transmission of information are affected by uniquely quantum mechanical phenomena. Combination of two-qubit gates has been used to realize quantum circuits, however, scalability is becoming...
Quantum supremacy in constant-time measurement-based computation: A unified architecture for sampling and verification
J. Miller, Stephen Sanders, A. Miyake·Mar 31, 2017
While quantum speed-up in solving certain decision problems by a fault-tolerant universal quantum computer has been promised, a timely research interest includes how far one can reduce the resource requirement to demonstrate a provable advantage in q...
Implementing a distance-based classifier with a quantum interference circuit
M. Schuld, M. Fingerhuth, Francesco Petruccione·Mar 31, 2017
Lately, much attention has been given to quantum algorithms that solve pattern recognition tasks in machine learning. Many of these quantum machine learning algorithms try to implement classical models on large-scale universal quantum computers that ...
Complete 3-Qubit Grover search on a programmable quantum computer
C. Figgatt, D. Maslov, D. Maslov +4 more·Mar 30, 2017
The Grover quantum search algorithm is a hallmark application of a quantum computer with a well-known speedup over classical searches of an unsorted database. Here, we report results for a complete three-qubit Grover search algorithm using the scalab...
Experimental realization of single-shot nonadiabatic holonomic gates in nuclear spins
Hang Li, Yang Liu, Guilu Long·Mar 30, 2017
Nonadiabatic holonomic quantum computation has received increasing attention due to its robustness against control errors. However, all the previous schemes have to use at least two sequentially implemented gates to realize a general one-qubit gate. ...
On the role of dealing with quantum coherence in amplitude amplification
A. Rastegin·Mar 29, 2017
Amplitude amplification is one of primary tools in building algorithms for quantum computers. This technique generalizes key ideas of the Grover search algorithm. Potentially useful modifications are connected with changing phases in the rotation ope...
Freezing dynamics of genuine entanglement and loss of genuine nonlocality under collective dephasing
Mazhar N. Ali·Mar 29, 2017
We study the dynamics of genuine multipartite entanglement for quantum systems upto four qubits interacting with general collective dephasing process. Using a computable entanglement monotone for multipartite systems, we observe the feature of freezi...
Nonadaptive fault-tolerant verification of quantum supremacy with noise
Theodoros Kapourniotis, A. Datta·Mar 28, 2017
Quantum samplers are believed capable of sampling efficiently from distributions that are classically hard to sample from. We consider a sampler inspired by the classical Ising model. It is nonadaptive and therefore experimentally amenable. Under a p...
Error-Transparent Quantum Gates for Small Logical Qubit Architectures.
E. Kapit·Mar 28, 2017
One of the largest obstacles to building a quantum computer is gate error, where the physical evolution of the state of a qubit or group of qubits during a gate operation does not match the intended unitary transformation. Gate error stems from a com...
Depth-Optimal Quantum Circuit Placement for Arbitrary Topologies
Debjyoti Bhattacharjee, A. Chattopadhyay·Mar 24, 2017
A significant hurdle towards realization of practical and scalable quantum computing is to protect the quantum states from inherent noises during the computation. In physical implementation of quantum circuits, a long-distance interaction between two...
Tailored codes for small quantum memories
Alan Robertson, C. Granade, S. Bartlett +1 more·Mar 23, 2017
We demonstrate that small quantum memories, realized via quantum error correction in multi-qubit devices, can benefit substantially by choosing a quantum code that is tailored to the relevant error model of the system. For a biased noise model, with ...
Solving Systems of Linear Equations with a Superconducting Quantum Processor.
Yarui Zheng, Yarui Zheng, Chao Song +18 more·Mar 20, 2017
Superconducting quantum circuits are a promising candidate for building scalable quantum computers. Here, we use a four-qubit superconducting quantum processor to solve a two-dimensional system of linear equations based on a quantum algorithm propose...
Holographic coherent states from random tensor networks
X. Qi, Zhao Yang, Yi-Zhuang You·Mar 19, 2017
Random tensor networks provide useful models that incorporate various important features of holographic duality. A tensor network is usually defined for a fixed graph geometry specified by the connection of tensors. In this paper, we generalize the r...
Features of the Photon Pulse Detection Algorithm in the Quantum Key Distribution System
A. Pljonkin·Mar 17, 2017
A two-pass fiber-optic quantum key distribution system with phase-encoded photon states in synchronization mode has been investigated. The possibility of applying the analytical expressions for the calculation of the correct detection probability of ...
Al transmon qubits on silicon-on-insulator for quantum device integration
A. Keller, Paul B. Dieterle, M. Fang +3 more·Mar 17, 2017
We present the fabrication and characterization of an aluminum transmon qubit on a silicon-on-insulator substrate. Key to the qubit fabrication is the use of an anhydrous hydrofluoric vapor process which selectively removes the lossy silicon oxide bu...
Finite-temperature density matrix embedding theory
Chong Sun, Ushnish Ray, Z. Cui +3 more·Mar 17, 2017
Density Matrix Embedding Theory (DMET) provides a powerful and less expensive framework to treat strongly correlated ground-state problems in both solids and molecules, by reproducing the entanglement between the fragment and its environment at mean-...