Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,857 papers in 12 months (-35% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Noise-tolerant parity learning with one quantum bit
D. Park, J. Rhee, S. Lee·Dec 16, 2017
Demonstrating quantum advantage with less powerful but more realistic devices is of great importance in modern quantum information science. Recently, a significant quantum speedup was achieved in the problem of learning a hidden parity function with ...
A Spectrometer as Simple as a CCD Detector
Tuo Li, Yishi Shi·Dec 15, 2017
Spectroscopy is the most fundamental instruments in almost every field of modern science. Conventional spectrometer is based on the dispersion elements such as various gratings. An alternative way is based on the filters such as interference filters,...
Unsupervised Machine Learning on a Hybrid Quantum Computer
J. Otterbach, R. Manenti, N. Alidoust +27 more·Dec 15, 2017
Machine learning techniques have led to broad adoption of a statistical model of computing. The statistical distributions natively available on quantum processors are a superset of those available classically. Harnessing this attribute has the potent...
On-demand quantum state transfer and entanglement between remote microwave cavity memories
C. Axline, Luke D. Burkhart, Wolfgang Pfaff +10 more·Dec 15, 2017
Coupling isolated quantum systems through propagating photons is a central theme in quantum science1,2, with the potential for groundbreaking applications such as distributed, fault-tolerant quantum computing3–5. To date, photons have been used widel...
Deterministic Remote Entanglement of Superconducting Circuits through Microwave Two-Photon Transitions.
P. Campagne-Ibarcq, E. Zalys-Geller, A. Narla +8 more·Dec 15, 2017
Large-scale quantum information processing networks will most probably require the entanglement of distant systems that do not interact directly. This can be done by performing entangling gates between standing information carriers, used as memories ...
Nondestructive discrimination of a new family of highly entangled states in IBM quantum computer
Saipriya Satyajit, K. Srinivasan, B. K. Behera +1 more·Dec 15, 2017
Measurement-based quantum computation (MQC) is a leading paradigm for building a quantum computer. Cluster states being used in this context act as one-way quantum computers. Here, we consider Z-states as a type of highly entangled states like cluste...
Simulation of low-depth quantum circuits as complex undirected graphical models
S. Boixo, S. Isakov, V. Smelyanskiy +1 more·Dec 14, 2017
Near term quantum computers with a high quantity (around 50) and quality (around 0.995 fidelity for two-qubit gates) of qubits will approximately sample from certain probability distributions beyond the capabilities of known classical algorithms on s...
Quantum simulation of ferromagnetic Heisenberg model
Yiping Wang, Minh C. Tran, Jacob M. Taylor·Dec 14, 2017
Large quantum simulators, with sufficiently many qubits to be impossible to simulate classically, become hard to experimentally validate. We propose two tests of a quantum simulator with Heisenberg interaction in a linear chain of spins. In the first...
A quantum algorithm to train neural networks using low-depth circuits
Guillaume Verdon, M. Broughton, J. Biamonte·Dec 14, 2017
The question has remained open if near-term gate model quantum computers will offer a quantum advantage for practical applications in the pre-fault tolerance noise regime. A class of algorithms which have shown some promise in this regard are the so-...
Measuring and Suppressing Error Correlations in Quantum Circuits
C. Edmunds, Cornelius Hempel, R. Harris +4 more·Dec 13, 2017
Quantum error correction provides a path to large-scale quantum computers, but is built on challenging assumptions about the characteristics of the underlying errors. In particular, the mathematical assumption of independent errors in quantum logic o...
The influence of quantum noise on the Grover algorithm and quantum Fourier transform: quantum operations theory approach
Y. Bogdanov, A. Chernyavskiy, B. Bantysh +2 more·Dec 13, 2017
The method of noisy multiqubit quantum circuits modeling is proposed. The analytical formulas for the dependence of quantum algorithms accuracy on qubits count and noise level are obtained for Grover algorithm and quantum Fourier transform. It is sho...
An Efficient Methodology for Mapping Quantum Circuits to the IBM QX Architectures
Alwin Zulehner, A. Paler, R. Wille·Dec 13, 2017
In the past years, quantum computers more and more have evolved from an academic idea to an upcoming reality. IBM’s project IBM ${Q}$ can be seen as evidence of this progress. Launched in March 2017 with the goal to provide access to quantum computer...
Machine learning techniques for state recognition and auto-tuning in quantum dots
Sandesh S. Kalantre, J. P. Zwolak, Stephen Ragole +4 more·Dec 13, 2017
Recent progress in building large-scale quantum devices for exploring quantum computing and simulation has relied upon effective tools for achieving and maintaining good experimental parameters, i.e., tuning up devices. In many cases, including quant...
Eliminating reservoir density-of-states fingerprints in Coulomb blockade spectroscopy
Arnab Manna, B. Muralidharan, S. Mahapatra·Dec 12, 2017
The differential conductance map of a single electron transistor (SET) provides information about a variety of parameters related to (quantum) dots, relevant for semiconductor-based quantum computing schemes. However, in ultra-scaled device architect...
Synthetic three-dimensional atomic structures assembled atom by atom
D. Barredo, Vincent Lienhard, S. Léséleuc +2 more·Dec 7, 2017
A great challenge in current quantum science and technology research is to realize artificial systems of a large number of individually controlled quantum bits for applications in quantum computing and quantum simulation. Many experimental platforms ...
Gouy Phase Radial Mode Sorter for Light: Concepts and Experiments.
Xuemei Gu, Mario Krenn, Manuel Erhard +1 more·Dec 7, 2017
We present an in principle lossless sorter for radial modes of light, using accumulated Gouy phases. The experimental setups have been found by a computer algorithm, and can be intuitively understood in a geometric way. Together with the ability to s...
Bulk entanglement gravity without a boundary: Towards finding Einstein's equation in Hilbert space
ChunJun Cao, S. Carroll·Dec 7, 2017
We consider the emergence from quantum entanglement of spacetime geometry in a bulk region. For certain classes of quantum states in an appropriately factorized Hilbert space, a spatial geometry can be defined by associating areas along codimension-o...
Majorana-Based Fermionic Quantum Computation.
T. O’Brien, P. Rożek, A. Akhmerov·Dec 6, 2017
Because Majorana zero modes store quantum information nonlocally, they are protected from noise, and have been proposed as a building block for a quantum computer. We show how to use the same protection from noise to implement universal fermionic qua...
Quantum error correction of continuous-variable states with realistic resources
Josephine Dias, T. Ralph·Dec 6, 2017
Gaussian noise induced by loss on Gaussian states may be corrected by distributing Einstein-Podolsky-Rosen entanglement through the loss channel, purifying the entanglement using a noiseless linear amplifier (NLA), and then using it for continuous-va...
Adaptive Weight Estimator for Quantum Error Correction in a Time‐Dependent Environment
Stephen T. Spitz, B. Tarasinski, C. Beenakker +1 more·Dec 6, 2017
Quantum error correction of a surface code or repetition code requires the pairwise matching of error events in a space‐time graph of qubit measurements, such that the total weight of the matching is minimized. The input weights follow from a physica...