Papers

Jeffrey Marshall, L. Venuti, P. Zanardi·Jul 12, 2016

Dissipation can be used as a resource to control and simulate quantum systems. We discuss a modular model based on fast dissipation capable of performing universal quantum computation, and simulating arbitrary Lindbladian dynamics. The model consists...

A. Bolt, Guillaume Duclos-Cianci, David Poulin +1 more·Jul 9, 2016

We show how to construct a large class of quantum error-correcting codes, known as Calderbank-Steane-Shor codes, from highly entangled cluster states. This becomes a primitive in a protocol that foliates a series of such cluster states into a much la...

G. Dauphinais, D. Poulin·Jul 7, 2016

While topological quantum computation is intrinsically fault-tolerant at zero temperature, it loses its topological protection at any finite temperature. We present a scheme to protect the information stored in a system supporting non-cyclic anyons a...

Yuki Takeuchi, K. Fujii, T. Morimae +1 more·Jul 6, 2016

Verifiable blind quantum computing allows a client with poor quantum devices to delegate universal quantum computing to a remote quantum server in such a way that the client's privacy is protected and the honesty of the server is verified. In existin...

A. Lovas, Attila Andai·Jul 5, 2016

The simplest building blocks for quantum computations are the qbit-qbit quantum channels. In this paper we analyse the structure of these channels via their Choi representation. The restriction of a quantum channel to the space of classical states (i...

Shota Nagayama, A. Fowler, D. Horsman +2 more·Jul 3, 2016

The yield of physical qubits fabricated in the laboratory is much lower than that of classical transistors in production semiconductor fabrication. Actual implementations of quantum computers will be susceptible to loss in the form of physically faul...

T. Morimae·Jul 3, 2016

We show that the Quantum State Distinguishability (QSD), which is a QSZK-complete problem, and the Quantum Circuit Distinguishability (QCD), which is a QIP-complete problem, can be solved by the verifier who can perform only single-qubit measurements...

E. Aurell·Jun 30, 2016

The operation of a quantum computer is considered as a general quantum operation on a mixed state on many qubits followed by a measurement. The general quantum operation is further represented as a Feynman–Vernon double path integral over the histori...

C. C. Moran·Jun 29, 2016

In May 2016 IBM released access to its 5-qubit quantum computer to the scientific community, its "IBM Quantum Experience" since acquiring over 25,000 users from students, educators and researchers around the globe. In the short time since the "IBM Qu...

Xiao Yuan, Ke Liu, Yuan Xu +7 more·Jun 29, 2016

Coherently manipulating multipartite quantum correlations leads to remarkable advantages in quantum information processing. A fundamental question is whether such quantum advantages persist only by exploiting multipartite correlations, such as entang...

M. H. Goerz, M. H. Goerz, F. Motzoi +3 more·Jun 28, 2016

With recent improvements in coherence times, superconducting transmon qubits have become a promising platform for quantum computing. They can be flexibly engineered over a wide range of parameters, but also require us to identify an efficient operati...

D. Kafri, C. Quintana, Yu Chen +3 more·Jun 27, 2016

For a variety of superconducting qubits, tunable interactions are achieved through mutual inductive coupling to a coupler circuit containing a nonlinear Josephson element. In this paper, we derive the general interaction mediated by such a circuit un...

O. D. Matteo, M. Mosca·Jun 23, 2016

Quantum circuit synthesis is the process in which an arbitrary unitary operation is decomposed into a sequence of gates from a universal set, typically one which a quantum computer can implement both efficiently and fault-tolerantly. As physical impl...

T. Morimae·Jun 21, 2016

Verifiable blind quantum computing is a secure delegated quantum computing where a client with a limited quantum technology delegates her quantum computing to a server who has a universal quantum computer. The client's privacy is protected (blindness...

Jiaheng Yang, Xiaodong He, R. Guo +7 more·Jun 17, 2016

We demonstrate that the coherence of a single mobile atomic qubit can be well preserved during a transfer process among different optical dipole traps (ODTs). This is a prerequisite step in realizing a large-scale neutral atom quantum information pro...

Michel Boyer, Aharon Brodutch, T. Mor·Jun 16, 2016

The role of entanglement and quantum correlations in complex physical systems and quantum information processing devices has become a topic of intense study in the past two decades. In this work we present new tools for learning about entanglement an...

K. Tan, M. Partanen, R. Lake +3 more·Jun 15, 2016

Quantum technology promises revolutionizing applications in information processing, communications, sensing and modelling. However, efficient on-demand cooling of the functional quantum degrees of freedom remains challenging in many solid-state imple...

M. Khezri, E. Mlinar, J. Dressel +1 more·Jun 14, 2016

Measuring a transmon qubit in circuit QED: dressed squeezed states Mostafa Khezri, 1, 2, ∗ Eric Mlinar, 1 Justin Dressel, 3, 4 and Alexander N. Korotkov 1 arXiv:1606.04204v2 [quant-ph] 1 Aug 2016 Department of Electrical and Computer Engineering, Uni...

Chaoxuan Ma, W. Sacher, Zhiyuan Tang +5 more·Jun 14, 2016

We present a silicon optical transmitter for polarization-encoded quantum key distribution (QKD). The chip was fabricated in a standard silicon photonic foundry process and integrated a pulse generator, intensity modulator, variable optical attenuato...

A. Daskin, S. Kais·Jun 14, 2016

The success probability in an ancilla-based circuit generally decreases exponentially in the number of qubits consisted in the ancilla. Although the probability can be amplified through the amplitude amplification process, the input dependence of the...