Editorial – Quantum

Quantum Views publishes Perspectives, Editorials, and Leaps on research papers and other issues of relevance for Quantum.

Quantum Decision Making

Nicolai Friis,

Quantum Views 7, 72 (2023).

No, what you are about to read is not about the latest quantum-research band waggon to jump on. Instead, this editorial is intended to give an inside view on the editorial process at Quantum…

Universality in quantum snapshots

Pieter W. Claeys,

Quantum Views 7, 71 (2023).

Thermalization and random matrices One of the main challenges in quantum mechanics lies in understanding the dynamical behaviour of many-body systems. How do isolated quantum systems relax t…

Extending Quantum topological data analysis to persistent homology

Sam McArdle,

Quantum Views 7, 70 (2023).

It is an open challenge to design quantum algorithms for machine learning that do not need access to large amounts of data – the efficient loading of which would require challenging-t…

High-performance Photonic Entanglement Generation

Xiongfeng Ma,

Quantum Views 6, 69 (2022).

Background With decades of development progress in quantum science and technology, we are at the dawn of entanglement-based quantum networks [1]. Theoretical research has gone deep into the…

Quantum thermal machines: a simple scheme with realistic bath modelling

Felipe Barra,

Quantum Views 6, 68 (2022).

Thermal machines interact with two or more heat reservoirs to perform work on a third system or use work to cool down the hot reservoir. In the first case, the machine works as an engine, an…

A Quantum Theory for Bose–Einstein Condensation of the Ideal Gas

Fabrice P. Laussy,

Quantum Views 6, 67 (2022).

Historical background: insights of a genius. The achievements of Einstein in formulating the laws governing nothing short of space and time are so monumental that they often overshadow his…

The signaling dimension of physical systems

Michele Dall’Arno,

Quantum Views 6, 66 (2022).

The question we start our analysis from is whether a quantum system can outperform a classical system of the same dimension for some communication scenarios. By “communication scenario'', w…

Designing algorithms for estimating ground state properties on early fault-tolerant quantum computers

Yu Tong,

Quantum Views 6, 65 (2022).

Estimating ground-state properties in quantum chemistry, e.g., the ground-state energy and observable expectation values, has been considered a promising candidate for demonstrating a useful…

Randomized benchmarking with a tractable continuously generated group

Martin Kliesch,

Quantum Views 6, 64 (2022).

1 Background For any given implementation of a quantum computer one would like to have a precise description of what its logical components are. Ideally, this information would include full…

Towards practical quantum LDPC codes

Joschka Roffe,

Quantum Views 5, 63 (2021).

In quantum computing there is no such thing as a perfect qubit; interaction with the environment is inevitable and quantum error correction must be used to ensure fault tolerance. Fortunatel…

Fast-Forwardable Quantum Evolution and Where to Find Them

Yuan Su,

Quantum Views 5, 62 (2021).

Simulating the time evolution of a quantum system is one of the major applications of quantum computers. The apparent intractability of this problem on a classical computer has led Feynman […

Fisher Information: A Crucial Tool for NISQ Research

Kishor Bharti,

Quantum Views 5, 61 (2021).

Quantum computers available today consist of around a few dozen qubits. Each quantum gate operation is afflicted by a certain level of noise, and hence the computations are restricted…

Gate set tomography is not just hyperaccurate, it’s a different way of thinking

Gregory A. L. White,

Quantum Views 5, 60 (2021).

Characterising quantum gates When a quantum computation breaks down, where — and how — did the error occur? We often take for granted the diversity of intricate noise in quantum informatio…

Poisson states in quantum information

Cosmo Lupo,

Quantum Views 5, 59 (2021).

A Poisson process is a mathematical model used to describe random events occurring in time or space. It has a wide range of applications, including natural sciences, operation research, and…

Atomic quantum memories boost quantum imaging and sensing

Erhan Saglamyurek,

Quantum Views 5, 58 (2021).

Quantum technologies rely on the generation, manipulation and measurements of quantum superposition states in a highly controlled and coherent fashion using various physical systems, such as…

Making fermionic quantum simulators more affordable

Daniel Leykam,

Quantum Views 5, 57 (2021).

One of the most promising applications of future quantum computers is the ab-initio calculation of chemical properties including ground state energies [1]. The required number of qubits and…