Papers
Live trends in quantum computing research, updated daily from arXiv.
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15,735 papers in 12 months (-37% vs prior quarter)
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Resource-efficient verification of quantum computing using Serfling’s bound
Yuki Takeuchi, A. Mantri, T. Morimae +2 more·Jun 24, 2018
Verifying quantum states is central to certifying the correct operation of various quantum information processing tasks. In particular, in measurement-based quantum computing, checking whether correct graph states are generated is essential for relia...
Formal Verification using Second-Quantized Horn Clauses
R. Balu·Jun 23, 2018
In our previous work [1] we described quantized computation using Horn clauses and based the semantics, dubbed as entanglement semantics as a generalization of denotational and distribution semantics, and founded it on quantum probability by exploiti...
Quantum codes from neural networks
Johannes Bausch, Felix Leditzky·Jun 22, 2018
We examine the usefulness of applying neural networks as a variational state ansatz for many-body quantum systems in the context of quantum information-processing tasks. In the neural network state ansatz, the complex amplitude function of a quantum ...
Quantum computing cryptography: Finding cryptographic Boolean functions with quantum annealing by a 2000 qubit D-wave quantum computer
Feng Hu, L. Lamata, M. Sanz +4 more·Jun 22, 2018
As the building block in symmetric cryptography, designing Boolean functions satisfying multiple properties is an important problem in sequence ciphers, block ciphers, and hash functions. However, the search of $n$-variable Boolean functions fulfilli...
Physics-Inspired Optimization for Quadratic Unconstrained Problems Using a Digital Annealer
Maliheh Aramon, G. Rosenberg, Elisabetta Valiante +3 more·Jun 22, 2018
The Fujitsu Digital Annealer is designed to solve fully connected quadratic unconstrained binary optimization (QUBO) problems. It is implemented on application-specific CMOS hardware and currently solves problems of up to 1024 variables. The Digital ...
Entanglement spectroscopy with a depth-two quantum circuit
Yiğit Subaşı, L. Cincio, Patrick J. Coles·Jun 22, 2018
Noisy intermediate-scale quantum (NISQ) computers have gate errors and decoherence, limiting the depth of circuits that can be implemented on them. A strategy for NISQ algorithms is to reduce the circuit depth at the expense of increasing the qubit c...
Quantum Kitchen Sinks: An algorithm for machine learning on near-term quantum computers
C. Wilson, J. Otterbach, N. Tezak +7 more·Jun 21, 2018
Noisy intermediate-scale quantum computing devices are an exciting platform for the exploration of the power of near-term quantum applications. Performing nontrivial tasks in such devices requires a fundamentally different approach than what would be...
Experimental quantification of spatial correlations in quantum dynamics
L. Postler, Á. Rivas, P. Schindler +6 more·Jun 21, 2018
Correlations between different partitions of quantum systems play a central role in a variety of many-body quantum systems, and they have been studied exhaustively in experimental and theoretical research. Here, we investigate dynamical correlations ...
Recovering noise-free quantum observables
M. Otten, S. Gray·Jun 20, 2018
We introduce a technique for recovering noise-free observables in noisy quantum systems by combining the results of many slightly different experiments. Our approach is applicable to a variety of quantum systems but we illustrate it with applications...
Engineering cryogenic setups for 100-qubit scale superconducting circuit systems
S. Krinner, S. Storz, P. Kurpiers +6 more·Jun 20, 2018
A robust cryogenic infrastructure in form of a wired, thermally optimized dilution refrigerator is essential for solid-state based quantum processors. Here, we engineer a cryogenic setup, which minimizes passive and active heat loads, while guarantee...
Controlling distilleries in fault-tolerant quantum circuits: problem statement and analysis towards a solution
A. Paler·Jun 19, 2018
The failure susceptibility of the quantum hardware will force quantum computers to execute fault-tolerant quantum circuits. These circuits are based on quantum error correcting codes, and there is increasing evidence that one of the most practical ch...
Entanglement of bosonic modes through an engineered exchange interaction
Yvonne Y Gao, B. Lester, K. Chou +5 more·Jun 19, 2018
Quantum computation presents a powerful new paradigm for information processing. A robust universal quantum computer can be realized with any well controlled quantum system, but a successful platform will ultimately require the combination of highly ...
A Universal Quantum Computing Virtual Machine
Qiantan Hong, Zi-Yong Ge, Wen Wang +8 more·Jun 18, 2018
A medium-scale quantum computer with full universal quantum computing capability is necessary for various practical aims and testing applications. Here we report a 34-qubit quantum virtual machine (QtVM) based on a medium server. Our QtVM can run qua...
Quantum State Merging for Arbitrarily Small-Dimensional Systems
H. Yamasaki, M. Murao·Jun 18, 2018
Recent advances in quantum technology facilitate the realization of information processing using quantum computers at least on the small and intermediate scales of up to several dozens of qubits. We investigate entanglement cost required for one-shot...
Simulation of Nonequilibrium Dynamics on a Quantum Computer.
Henry Lamm, S. Lawrence·Jun 18, 2018
We present a hybrid quantum-classical algorithm for the time evolution of out-of-equilibrium thermal states. The method depends on classically computing a sparse approximation to the density matrix and, then, time-evolving each matrix element via the...
Quantum risk analysis
Stefan Woerner, D. Egger·Jun 18, 2018
We present a quantum algorithm that analyzes risk more efficiently than Monte Carlo simulations traditionally used on classical computers. We employ quantum amplitude estimation to price securities and evaluate risk measures such as Value at Risk and...
From Probabilistic Graphical Models to Generalized Tensor Networks for Supervised Learning
I. Glasser, Nicola Pancotti, J. I. Cirac·Jun 15, 2018
Tensor networks have found a wide use in a variety of applications in physics and computer science, recently leading to both theoretical insights as well as practical algorithms in machine learning. In this work we explore the connection between tens...
Markov process simulation on a real quantum computer
Petar Nikolov·Jun 15, 2018
This paper shows a novel way of simulating a Markov process by a quantum computer. The main purpose of the paper is to show a particular application of quantum computing in the field of stochastic processes analysis. Using a Quantum computer, the pro...
Quantum computing with classical bits
C. Wetterich·Jun 15, 2018
Abstract A bit-quantum map relates probabilistic information for Ising spins or classical bits to quantum spins or qubits. Quantum systems are subsystems of classical statistical systems. The Ising spins can represent macroscopic two-level observable...
Variational quantum algorithms for discovering Hamiltonian spectra
Suguru Endo, Tyson Jones, Sam McArdle +2 more·Jun 14, 2018
Calculating the energy spectrum of a quantum system is an important task, for example to analyse reaction rates in drug discovery and catalysis. There has been significant progress in developing algorithms to calculate the ground state energy of mole...