Quantum

Paper

Yao.jl: Extensible, Efficient Framework for Quantum Algorithm Design

Xiu-Zhe Luo, Jin-Guo Liu, Pan Zhang, and Lei Wang,

Quantum 4, 341 (2020).

We introduce $\texttt{Yao}$, an extensible, efficient open-source framework for quantum algorithm design. $\texttt{Yao}$ features generic and differentiable programming of quantum circuits. It a…

Paper

Transfer learning in hybrid classical-quantum neural networks

Andrea Mari, Thomas R. Bromley, Josh Izaac, Maria Schuld, and Nathan Killoran,

Quantum 4, 340 (2020).

We extend the concept of transfer learning, widely applied in modern machine learning algorithms, to the emerging context of hybrid neural networks composed of classical and quantum elements…

Paper

Weak-ergodicity-breaking via lattice supersymmetry

Federica Maria Surace, Giuliano Giudici, and Marcello Dalmonte,

Quantum 4, 339 (2020).

We study the spectral properties of $D$-dimensional $N=2$ supersymmetric lattice models. We find systematic departures from the eigenstate thermalization hypothesis (ETH) in the form of a degene…

Paper

Morphophoric POVMs, generalised qplexes, and 2-designs

Wojciech Słomczyński and Anna Szymusiak,

Quantum 4, 338 (2020).

We study the class of quantum measurements with the property that the image of the set of quantum states under the measurement map transforming states into probability distributions is simil…

Paper

Self-testing of quantum systems: a review

Ivan Šupić and Joseph Bowles,

Quantum 4, 337 (2020).

Self-testing is a method to infer the underlying physics of a quantum experiment in a black box scenario. As such it represents the strongest form of certification for quantum systems. In re…

Paper

Shortcuts to Adiabaticity in Driven Open Quantum Systems: Balanced Gain and Loss and Non-Markovian Evolution

Sahar Alipour, Aurelia Chenu, Ali T. Rezakhani, and Adolfo del Campo,

Quantum 4, 336 (2020).

A universal scheme is introduced to speed up the dynamics of a driven open quantum system along a prescribed trajectory of interest. This framework generalizes counterdiabatic driving to ope…

Paper

Thermodynamics of ultrastrongly coupled light-matter systems

Philipp Pilar, Daniele De Bernardis, and Peter Rabl,

Quantum 4, 335 (2020).

We study the thermodynamic properties of a system of two-level dipoles that are coupled ultrastrongly to a single cavity mode. By using exact numerical and approximate analytical methods, we…

Paper

De-Signing Hamiltonians for Quantum Adiabatic Optimization

Elizabeth Crosson, Tameem Albash, Itay Hen, and A. P. Young,

Quantum 4, 334 (2020).

Quantum fluctuations driven by non-stoquastic Hamiltonians have been conjectured to be an important and perhaps essential missing ingredient for achieving a quantum advantage with adiabatic…

Paper

Communication through coherent control of quantum channels

Alastair A. Abbott, Julian Wechs, Dominic Horsman, Mehdi Mhalla, and Cyril Branciard,

Quantum 4, 333 (2020).

A completely depolarising quantum channel always outputs a fully mixed state and thus cannot transmit any information. In a recent Letter[3], it was however shown that if a quantum state pas…

Paper

Informationally restricted quantum correlations

Armin Tavakoli, Emmanuel Zambrini Cruzeiro, Jonatan Bohr Brask, Nicolas Gisin, and Nicolas Brunner,

Quantum 4, 332 (2020).

Quantum communication leads to strong correlations, that can outperform classical ones. Complementary to previous works in this area, we investigate correlations in prepare-and-measure scena…

Paper

Kitaev’s quantum double model as an error correcting code

Shawn X. Cui, Dawei Ding, Xizhi Han, Geoffrey Penington, Daniel Ranard, Brandon C. Rayhaun, and Zhou Shangnan,

Quantum 4, 331 (2020).

Kitaev's quantum double models in 2D provide some of the most commonly studied examples of topological quantum order. In particular, the ground space is thought to yield a quantum error-corr…

Paper

Distillation of maximally correlated bosonic matter from many-body quantum coherence

Tyler J. Volkoff,

Quantum 4, 330 (2020).

We construct quantum coherence resource theories in symmetrized Fock space (QCRTF), thereby providing an information-theoretic framework that connects analyses of quantum coherence in discre…

Paper

Additive-error fine-grained quantum supremacy

Tomoyuki Morimae and Suguru Tamaki,

Quantum 4, 329 (2020).

It is known that several sub-universal quantum computing models, such as the IQP model, the Boson sampling model, the one-clean qubit model, and the random circuit model, cannot be classical…

Paper

Efficient variational contraction of two-dimensional tensor networks with a non-trivial unit cell

A. Nietner, B. Vanhecke, F. Verstraete, J. Eisert, and L. Vanderstraeten,

Quantum 4, 328 (2020).

Tensor network states provide an efficient class of states that faithfully capture strongly correlated quantum models and systems in classical statistical mechanics. While tensor networks ca…

Paper

Quantum computing with neutral atoms

Loïc Henriet, Lucas Beguin, Adrien Signoles, Thierry Lahaye, Antoine Browaeys, Georges-Olivier Reymond, and Christophe Jurczak,

Quantum 4, 327 (2020).

The manipulation of neutral atoms by light is at the heart of countless scientific discoveries in the field of quantum physics in the last three decades. The level of control that has been a…

Paper

Completely Positive, Simple, and Possibly Highly Accurate Approximation of the Redfield Equation

Dragomir Davidović,

Quantum 4, 326 (2020).

Here we present a Lindblad master equation that approximates the Redfield equation, a well known master equation derived from first principles, without significantly compromising the range o…

Category: Paper