Papers

Hsuan-Hao Lu, J. Lukens, N. Peters +3 more·Mar 28, 2018

Quantum information is the next frontier in information science, promising unconditionally secure communications, enhanced channel capacities, and computing capabilities far beyond their classical counterparts. And as quantum information processing d...

K. Fujii·Mar 27, 2018

Quantum computation provides exponential speedup for solving certain mathematical problems against classical computers. Motivated by current rapid experimental progress on quantum computing devices, various models of quantum computation have been inv...

L. Arrachea, Rosa López·Mar 27, 2018

We formulate a general theory to study the time-dependent charge and energy transport of an adiabatically driven quantum dot in contact to normal and superconducting reservoirs at T = 0. This setup is a generalization of a quantum RC circuit, with ca...

Jonas Zeuner, I. Pitsios, Si-Hui Tan +4 more·Mar 27, 2018

Quantum computers promise not only to outperform classical machines for certain important tasks, but also to preserve privacy of computation. For example, the blind quantum computing protocol enables secure delegated quantum computation, where a clie...

R. Mori·Mar 27, 2018

In this work, we consider a new type of Fourier-like representation of Boolean function f\colon\{+1,-1\}^n\to\{+1,-1\}: f(x) = \cos(\pi\sum_{S\subseteq[n]}\phi_S \prod_{i\in S} x_i). This representation, which we call the periodic Fourier representat...

Rongxin Xia, S. Kais·Mar 27, 2018

Considering recent advancements and successes in the development of efficient quantum algorithms for electronic structure calculations—alongside impressive results using machine learning techniques for computation—hybridizing quantum computing with m...

Cornelius Hempel, C. Maier, J. Romero +10 more·Mar 27, 2018

Quantum-classical hybrid algorithms are emerging as promising candidates for near-term practical applications of quantum information processors in a wide variety of fields ranging from chemistry to physics and materials science. We report on the expe...

Theerapat Tansuwannont, C. Chamberland, D. Leung·Mar 26, 2018

Flag qubits have recently been proposed in syndrome extraction circuits to detect high-weight errors arising from fewer faults. The use of flag qubits allows the construction of fault-tolerant protocols with the fewest number of ancillas known to-dat...

F. Yan, P. Krantz, Youngkyu Sung +6 more·Mar 26, 2018

The prospect of computational hardware with quantum advantage relies critically on the quality of quantum gate operations. Imperfect two-qubit gates is a major bottleneck for achieving scalable quantum information processors. Here, we propose a gener...

Yuhan Liu, Xiao Zhang, M. Lewenstein +1 more·Mar 24, 2018

It is a hot topic how entanglement, a quantity from quantum information theory, can assist machine learning. In this work, we implement numerical experiments to classify patterns/images by representing the classifiers as matrix product states (MPS). ...

C. Wang, Leonard Wossnig·Mar 22, 2018

We present a quantum algorithm for simulating the dynamics of Hamiltonians that are not necessarily sparse. Our algorithm is based on the input model where the entries of the Hamiltonian are stored in a data structure in a quantum random access memor...

Adam C. Keith, Adam C. Keith, C. Baldwin +3 more·Mar 22, 2018

Estimation of quantum states and measurements is crucial for the implementation of quantum information protocols. The standard method for each is quantum tomography. However, quantum tomography suffers from systematic errors caused by imperfect knowl...

T. Platini, R. J. Low·Mar 22, 2018

Inspired by the algorithm of Barnsley’s chaos game, we construct an open quantum system model based on the repeated interaction process. We show that the quantum dynamics of the appropriate fermionic/bosonic system (in interaction with an environment...

Yiruo Lin, A. Leggett·Mar 21, 2018

Majorana zero modes are predicted to exist in p+ip (either inherent or effective due to proximity effect) superfluids and are proposed to be used for constructing topological qubits for topologically protected quantum computing. Existing theories on ...

Barak Shoshany·Mar 19, 2018

We present a conceptually clear introduction to quantum theory, deriving the theory from scratch from the point of view of quantum information. Different subsets of these lectures were taught to a wide variety of audiences, including exceptional high...

Kyle E. C. Booth, M. Do, J. Christopher Beck +3 more·Mar 19, 2018

Recently, the makespan-minimization problem of compiling a general class of quantum algorithms into near-term quantum processors has been introduced to the AI community. The research demonstrated that temporal planning is a strong approach for a ...

M. Mochol-Grzelak, A. Dauphin, A. Celi +1 more·Mar 19, 2018

Topological insulators are exotic material that possess conducting surface states protected by the topology of the system. They can be classified in terms of their properties under discrete symmetries and are characterized by topological invariants. ...

Narayanan Rengaswamy, R. Calderbank, H. Pfister +1 more·Mar 19, 2018

Quantum error-correcting codes can be used to protect qubits involved in quantum computation. This requires that logical operators acting on protected qubits be translated to physical operators (circuits) acting on physical quantum states. We propose...

M. Schuld, N. Killoran·Mar 19, 2018

A basic idea of quantum computing is surprisingly similar to that of kernel methods in machine learning, namely, to efficiently perform computations in an intractably large Hilbert space. In this Letter we explore some theoretical foundations of this...

T. Morimae·Mar 18, 2018

Blind quantum computing enables a client, who does not have enough quantum technologies, to delegate her quantum computing to a remote quantum server in such a way that her privacy is protected against the server. Some blind quantum computing protoco...