Quantum

Jordi R. Weggemans, Alexander Urech, Alexander Rausch, Robert Spreeuw, Richard Boucherie, Florian Schreck, Kareljan Schoutens, Jiří Minář, and Florian Speelman,

Quantum 6, 687 (2022).

We study the correlation clustering problem using the quantum approximate optimization algorithm (QAOA) and qudits, which constitute a natural platform for such non-binary problems. Specific…

Paper

Atom-Mechanical Hong-Ou-Mandel Interference

Alisa D. Manukhova, Andrey A. Rakhubovsky, and Radim Filip,

Quantum 6, 686 (2022).

Quantum coupling between mechanical oscillators and atomic gases generating entanglement has been recently experimentally demonstrated using their subsequent interaction with light. The next…

Paper

Entropy production and fluctuation theorems in a continuously monitored optical cavity at zero temperature

Michael J. Kewming and Sally Shrapnel,

Quantum 6, 685 (2022).

Fluctuation theorems allow one to make generalised statements about the behaviour of thermodynamic quantities in systems that are driven far from thermal equilibrium. In this article we use…

Paper

Environment-assisted strong coupling regime

Timofey T. Sergeev, Ivan V. Vovcenko, Alexander A. Zyablovsky, and Evgeny S. Andrianov,

Quantum 6, 684 (2022).

Strong coupling regime takes place in open hybrid systems consisting of two or more physical subsystems when the coupling strength between subsystems exceeds the relaxation rate. The relaxat…

Paper

Flow of time during energy measurements and the resulting time-energy uncertainty relations

Ismael L. Paiva, Augusto C. Lobo, and Eliahu Cohen,

Quantum 6, 683 (2022).

Uncertainty relations play a crucial role in quantum mechanics. Well-defined methods exist for the derivation of such uncertainties for pairs of observables. Other approaches also allow the…

Paper

Bounds on the recurrence probability in periodically-driven quantum systems

Tanmoy Pandit, Alaina M. Green, C. Huerta Alderete, Norbert M. Linke, and Raam Uzdin,

Quantum 6, 682 (2022).

Periodically-driven systems are ubiquitous in science and technology. In quantum dynamics, even a small number of periodically-driven spins leads to complicated dynamics. Hence, it is of int…

Paper

Canonical quantisation of telegrapher’s equations coupled by ideal nonreciprocal elements

Adrian Parra-Rodriguez and Iñigo L. Egusquiza,

Quantum 6, 681 (2022).

We develop a systematic procedure to quantise canonically Hamiltonians of light-matter models of transmission lines coupled through lumped linear lossless ideal nonreciprocal elements, that…

Paper

A Logarithmic Bayesian Approach to Quantum Error Detection

Ian Convy and K. Birgitta Whaley,

Quantum 6, 680 (2022).

We consider the problem of continuous quantum error correction from a Bayesian perspective, proposing a pair of digital filters using logarithmic probabilities that are able to achieve near-…

Paper

Deterministic transformations between unitary operations: Exponential advantage with adaptive quantum circuits and the power of indefinite causality

Marco Túlio Quintino and Daniel Ebler,

Quantum 6, 679 (2022).

This work analyses the performance of quantum circuits and general processes to transform $k$ uses of an arbitrary unitary operation $U$ into another unitary operation $f(U)$. When the desired fun…

Paper

Hybrid quantum-classical algorithms for approximate graph coloring

Sergey Bravyi, Alexander Kliesch, Robert Koenig, and Eugene Tang,

Quantum 6, 678 (2022).

We show how to apply the recursive quantum approximate optimization algorithm (RQAOA) to MAX-$k$-CUT, the problem of finding an approximate $k$-vertex coloring of a graph. We compare this propos…

Category: Paper