Papers

Xinyu Zhao, Xuedong Hu·Mar 2, 2018

With silicon being the go-to material for spin qubits, and motivated by the demand of a scalable quantum computer architecture for fast and reliable quantum information transfer on-chip, we study coherent electron transport in a silicon double quantu...

Vahid Azimi Mousolou, E. Sjöqvist·Mar 1, 2018

Entanglement is one of the main resources of quantum computation, and entangling power of a quantum system is a crucial element in the universality and efficiency of a proposed architecture for realization of quantum processing. Our goal here is to s...

Z. Minev, Z. Minev, S. Mundhada +8 more·Mar 1, 2018

In quantum physics, measurements can fundamentally yield discrete and random results. Emblematic of this feature is Bohr’s 1913 proposal of quantum jumps between two discrete energy levels of an atom1. Experimentally, quantum jumps were first observe...

M. Friedl, Kris Cerveny, P. Weigele +15 more·Mar 1, 2018

Topological qubits based on Majorana Fermions have the potential to revolutionize the emerging field of quantum computing by making information processing significantly more robust to decoherence. Nanowires are a promising medium for hosting these ki...

Hao Zhang, A. Alsaedi, T. Hayat +1 more·Mar 1, 2018

We present a theoretical proposal for a physical implementation of entanglement concentration and purification protocols for two-mode squeezed microwave photons in circuit quantum electrodynamics (QED). First, we give the description of the cross-Ker...

Serge Rosenblum, P. Reinhold, M. Mirrahimi +4 more·Feb 28, 2018

Fault-tolerant quantum coding Noise and imperfections in a quantum system can result in the presence and propagation of errors through the system. A reliable quantum processor will need to be able to correct for these errors and error syndromes. Rose...

Robert Rand, Jennifer Paykin, Steve Zdancewic·Feb 27, 2018

We describe an embedding of the QWIRE quantum circuit language in the Coq proof assistant. This allows programmers to write quantum circuits using high-level abstractions and to prove properties of those circuits using Coq's theorem proving features....

B. Royer, S. Puri, A. Blais·Feb 27, 2018

Large-scale quantum error correction is now more practical owing to novel method for qubit parity readout. Multiqubit parity measurements are essential to quantum error correction. Current realizations of these measurements often rely on ancilla qubi...

Daniel Jaschke, L. Carr·Feb 27, 2018

Tensor network methods as presented in our open source matrix product states software have opened up the possibility to study many-body quantum physics in one and quasi-one-dimensional systems in an easily accessible package similar to density functi...

M. Hastings·Feb 27, 2018

We give a quantum algorithm to exactly solve certain problems in combinatorial optimization, including weighted MAX-2-SAT as well as problems where the objective function is a weighted sum of products of Ising variables, all terms of the same degree ...

V. Smelyanskiy, K. Kechedzhi, S. Boixo +3 more·Feb 27, 2018

We analyze the role of coherent tunneling that gives rise to bands of delocalized quantum states providing a coherent pathway for population transfer (PT) between computational states with similar energies. Given an energy function ${\cal E}(z)$ of a...

A. Glos, Jaroslaw Adam Miszczak·Feb 27, 2018

In this paper, we demonstrate that the efficiency of quantum spatial search can be significantly altered by malicious manipulation of the input data in the client–server model. We achieve this by exploiting exceptional configuration effect on Szegedy...

A. Hammond, I. Frank, R. Camacho·Feb 27, 2018

Quantum green machines using integrated optics may enable better communication in photon-starved environments, but fabrication inconsistencies induce unpredictable internal phase errors, making them difficult to construct. We describe and experimenta...

M. Kounalakis, C. Dickel, A. Bruno +3 more·Feb 27, 2018

Analog quantum simulations offer rich opportunities for exploring complex quantum systems and phenomena through the use of specially engineered, well-controlled quantum systems. A critical element, increasing the scope and flexibility of such experim...

Lantian Feng, Ming Zhang, X. Xiong +7 more·Feb 27, 2018

Integrated entangled photon pair source is an essential resource for both fundamental investigations and practical applications of quantum information science. Currently there have been several types of entanglement, among which the transverse-mode e...

Xiao-Ming Zhang, Zi-Wei Cui, Xin Wang +1 more·Feb 26, 2018

One of the ambitious goals of artificial intelligence is to build a machine that outperforms human, even if limited knowledge and data are provided. Reinforcement Learning (RL) provides one such possibility to reach this goal. In this work, we consid...

D. Egger, M. Werninghaus, M. Ganzhorn +4 more·Feb 25, 2018

Improving coherence times of quantum bits is a fundamental challenge in the field of quantum computing. With long-lived qubits it becomes, however, inefficient to wait until the qubits have relaxed to their ground state after completion of an experim...

K. Svore, Alan Geller, M. Troyer +7 more·Feb 24, 2018

Quantum computing exploits quantum phenomena such as superposition and entanglement to realize a form of parallelism that is not available to traditional computing. It offers the potential of significant computational speed-ups in quantum chemistry, ...

D. Sexty, C. Wetterich·Feb 23, 2018

We simulate static memory materials on a two-dimensional lattice. The bulk properties of such materials depend on boundary conditions. Considerable information can be stored in various local patterns. We observe local probabilities oscillating with t...

Yvonne Y Gao, B. Lester, Yaxing Zhang +6 more·Feb 23, 2018

Interference experiments provide a simple yet powerful tool to unravel fundamental features of quantum physics. Here we engineer an RF-driven, time-dependent bilinear coupling that can be tuned to implement a robust 50:50 beamsplitter between station...