Category: Perspective

Shane Dooley,

Quantum Views 7, 75 (2023).

Summary Throughout the history of physics, exactly solvable models have provided valuable insight into various physical phenomena [1]. Conventional wisdom says that exact solutions are usual…

Pei Zeng,

Quantum Views 7, 74 (2023).

We live in a quantum world, yet, our everyday experiences seem to present themselves in terms of classical information. To examine large quantum systems, we can obtain classical information…

Marcus V. S. Bonança,

Quantum Views 7, 73 (2023).

The problem of quantifying the thermodynamic cost of bit erasure has received a great attention since its first proposal [1,2]. Its relation with previously considered problems of the thermo…

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…

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…

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…

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…

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…

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…

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…

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 […

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…

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…

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…