QUROPE Quantum Information Processing and Communication in Europe

Author(s): Taysa M. Mendonça, Lucas C. Céleri, Mauro Paternostro, and Diogo O. Soares-Pinto

This work sheds light on the mechanism that governs the propagation of quantum information from a system to its surrounding environment, highlighting the possibility of witnessing a quantum-to-classical transition in the process.

[Phys. Rev. A 110, L040401] Published Thu Oct 10, 2024

Author(s): Charles Day

Despite its intensity, the gravitational collapse of certain massive stars does not produce an abundance of heavy elements.

[Physics 17, s122] Published Wed Oct 09, 2024

Author(s): Bohdan Bilash, Youngrong Lim, Hyukjoon Kwon, Yosep Kim, Hyang-Tag Lim, Wooyeong Song, and Yong-Su Kim

Identifying Bell states without destroying them is frequently dealt with in quantum technologies nowadays, such as in quantum communication and quantum computing. In practice, quantum entangled states are often distributed among distant parties, and it might be required to determine them separately …

[Phys. Rev. A 110, 042407] Published Wed Oct 09, 2024

Author(s): Federico Carollo and Igor Lesanovsky

Understanding quantum many-body systems with long-range or infinite-range interactions is of relevance across a broad set of physical disciplines, including quantum optics, nuclear magnetic resonance, and nuclear physics. From a theoretical viewpoint, these systems are appealing since they can be ef…

[Phys. Rev. Lett. 133, 150401] Published Tue Oct 08, 2024

Author(s): Elisa Bäumer, Vinay Tripathi, Alireza Seif, Daniel Lidar, and Derek S. Wang

In dynamic quantum circuits, classical information from midcircuit measurements is fed forward during circuit execution. This emerging capability of quantum computers confers numerous advantages that can enable more efficient and powerful protocols by drastically reducing the resource requirements f…

[Phys. Rev. Lett. 133, 150602] Published Tue Oct 08, 2024

Author(s): Guoqing Wang (王国庆), Minh-Thi Nguyen, and Paola Cappellaro

Solid-state platforms based on electronuclear spin systems are attractive candidates for rotation sensing due to their excellent sensitivity, stability, and compact size, compatible with industrial applications. Conventional spin-based gyroscopes measure the accumulated phase of a nuclear spin super…

[Phys. Rev. Lett. 133, 150801] Published Tue Oct 08, 2024

The 2024 Nobel Prize in Physics honors pioneering work on artificial neural networks, which provided the foundation for many of the artificial intelligence technologies in use today.

[Physics 17, 146] Published Tue Oct 08, 2024

Author(s): Charles Day

When two laser beams converge on a volume of gas, their interference creates a diffraction grating made of plasma that can divert and shape a third beam.

[Physics 17, s123] Published Tue Oct 08, 2024

Author(s): Somshubhro Bandyopadhyay and Vincent Russo

We consider the problem of distinguishing between the elements of a bipartite maximally entangled orthonormal basis using local operations and classical communication (LOCC) and a partially entangled state acting as a resource. We derive an exact formula for the optimum success probability and find …

[Phys. Rev. A 110, 042406] Published Tue Oct 08, 2024

Author(s): Kazufumi Tanji, Hiroki Takahashi, Wojciech Roga, and Masahiro Takeoka

The qubit scalability imposes a paramount challenge in the field of quantum computing. Photonic interconnects between distinct quantum computing modules provide a solution to deal with this issue. The fundamental part of this approach is entanglement distribution via traveling photons emitted by mat…

[Phys. Rev. A 110, 042405] Published Tue Oct 08, 2024

Author(s): D. Petrosyan, S. Norrell, C. Poole, and M. Saffman

We propose and analyze an approach for fast syndrome measurements in an array of rubidium and cesium atomic qubits. The scheme works by implementing an interspecies controlled-not (cnotk) gate, entangling one cesium ancilla qubit with k≥1 rubidium qubits which are then used for state measurement. Ut…

[Phys. Rev. A 110, 042404] Published Tue Oct 08, 2024

Author(s): Huan Cao, Simon Morelli, Lee A. Rozema, Chao Zhang, Armin Tavakoli, and Philip Walther

Standard procedures for entanglement detection assume that experimenters can exactly implement specific quantum measurements. Here, we depart from such idealizations and investigate, in both theory and experiment, the detection of genuine multipartite entanglement when measurements are subject to sm…

[Phys. Rev. Lett. 133, 150201] Published Mon Oct 07, 2024

Author(s): T. L. M. Guedes, D. Winter, and M. Müller

Quantum cellular automata are alternative quantum-computing paradigms to quantum Turing machines and quantum circuits. Their working mechanisms are inherently automated, therefore measurement free, and they act in a translation invariant manner on all cells or qudits of a register, generating a glob…

[Phys. Rev. Lett. 133, 150601] Published Mon Oct 07, 2024

Author(s): Matteo Ciarchi and Ivan Di Terlizzi

Bacteria, cells, swarms, and other organisms pluck information from noisy environments with extraordinarily high precision.

[Physics 17, 143] Published Mon Oct 07, 2024

Author(s): Mark Buchanan

An infrared detector is sensitive to a wide range of intensities and could potentially pick up biomarkers from exoplanet atmospheres.

[Physics 17, 144] Published Mon Oct 07, 2024

Author(s): Ido Golding and Ariel Amir

Gene expression, that is, the way in which genes encoded in the genome determine a cell’s growth and biological function, is crucially influenced by growth-related processes, such as replication of the genome and the doubling of all cellular components. Historically, this interplay has been largely ignored. This Colloquium describes recent experiments designed to shed light on this important coupling and theoretical models that take it into account.

[Rev. Mod. Phys. 96, 041001] Published Fri Oct 04, 2024

Author(s): Mattia Moroder, Oisín Culhane, Krissia Zawadzki, and John Goold

We investigate the quantum Mpemba effect from the perspective of nonequilibrium quantum thermodynamics by studying relaxation dynamics of quantum systems coupled to a Markovian heat bath, which are described by Davies maps. Starting from a state with coherences in the energy eigenbasis, we demonstra…

[Phys. Rev. Lett. 133, 140404] Published Fri Oct 04, 2024

Author(s): Shuo Liu, Hao-Kai Zhang, Shuai Yin, and Shi-Xin Zhang

Entanglement asymmetry, which serves as a diagnostic tool for symmetry breaking and a proxy for thermalization, has recently been proposed and studied in the context of symmetry restoration for quantum many-body systems undergoing a quench. In this Letter, we investigate symmetry restoration in vari…

[Phys. Rev. Lett. 133, 140405] Published Fri Oct 04, 2024

Author(s): Michael Schirber

A short-lived combination of an electron and an antielectron has been cooled with lasers to near absolute zero—a step toward tackling fundamental questions about matter and antimatter.

[Physics 17, 145] Published Fri Oct 04, 2024

Author(s): Boning Huang (黄泊宁), Yongguan Ke (柯勇贯), Honghua Zhong (钟宏华), Yuri S. Kivshar, and Chaohong Lee (李朝红)

Bound states in the continuum (BICs) are localized modes residing in the radiation continuum. They were first predicted for single-particle states, and became a general feature of many wave systems. In many-body quantum physics, it is still unclear what would be a close analog of BICs, and whether i…

[Phys. Rev. Lett. 133, 140202] Published Thu Oct 03, 2024