Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Ultracold atoms in ring traps: from fundamentals to atomtronics applications

Anna Minguzzi

Published Jun 18, 2023• 0 citations
OpenAlex

Abstract

Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter-wave circuits for fundamental studies in both quantum science and technological applications.I will present the principles of persistent currents for atoms subjected to artificial gauge fields. For the case of a tight transverse confinement, where the system is effectively one-dimensional, I will detail the theoretical models we use to account for the effects of interactions, from weak to strong. I will then present our results on the persistent currents for both bosons and multi-component Fermi gases, as well as the readout protocols envisaged. Finally, I will discuss possible applications to quantum technologies.

Related papers

Atomtronic circuits: from basic research in many-body physics to applications for quantum technologies

Luigi Amico A, Dana Anderson, M. G. Boshier +4 more

Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter wave circuits for both fundamental studies in quantum science and technological applications. In this colloquium, we review recent progress in matter-wave circuitry and atomtronics-based quantum technology. After a short introduction to the basic physical principles and the key experimental techniques needed to realize atomtronic systems, we describe the physics of matter-waves in simple circuits such as ring traps and two-terminal systems. The main experimental observations and outstanding questions are discussed. We also present possible applications to a broad range of quantum technologies, from quantum sensing with atom interferometry to future quantum simulation and quantum computation architectures.

arXiv:2107.08561•Jul 18, 2021•10 citations

Colloquium : Atomtronic circuits: From many-body physics to quantum technologies

Luigi Amico A, Dana Z. Anderson, M. G. Boshier +4 more

Atomtronics refers to the use of ultracold atoms for building circuits that rely on the coherent propagation of matter waves in waveguides. While still in its infancy, this new quantum technology is promising both for applications and for probing the correlated atomic matter itself. This Colloquium explains the current state of the field and discusses possible applications.

Reviews of Modern Physics•Nov 18, 2022•155 citations

Quantum Transport of Ultracold Fermions in Optical Potentials

Mekena Metcalf

A new millennia ushered in novel experimental capabilities to investigate engineered quantum systems. Gases consisting of charge neutral atoms are cooled to the ground state and by exploiting the dipole interaction can be trapped by laser light. In ultracold atomic systems the tunneling and interactions are controllable, and the system is absent of disorder. Disorder and interactions in solid-state systems inhibits a complete understanding of transport phenomena. Theoretical investigations into non-equilibrium and equilibrium dynamics of fermions in discretized potentials and in continuum are presented. The affect of controllable, external system parameters is evaluated and exploited to reveal new properties of fermion dynamics. My thesis will begin with an overview of the physics associated with many-body fermion and the models used to obtain results, followed by my thesis research on how matter-waves can be manipulated by lattice geometry and tunneling strengths. Next, I present how dissipation affects current in a continuous ring, demonstrating rate-dependent hysteresis as the particles are driven by an artificial gauge field. After presenting the continuous ring, I will then focus on persistent current and corresponding quantum current fluctuations in a discretized ring. Lissajous curves are found in the system whose area strongly depends on the presence and absence of interactions. Lastly, I will discuss dynamical detection methods for one-dimensional topological insulators using ultracold fermions. All of the results are supported with discussion on how they can be realized using current experimental technology.

•Jan 1, 2018•0 citations

Persistent currents in ultracold gases

Juan Polo, Wayne Jordan Chetcuti, Tobias Haug +3 more

Persistent currents flowing in spatially closed tracks define one of the most iconic concepts in mesoscopic physics . They have been studied in solid-state platforms such as superfluids , superconductors and metals. Cold atoms trapped in magneto-optical toroidal circuits and driven by suitable artificial gauge fields allow us to study persistent currents with unprecedented control and flexibility of the system’s physical conditions. Here, we review persistent currents of ultracold matter. Capitalizing on the remarkable progress in driving different atomic species to quantum degeneracy, persistent currents of single or multicomponent bosons/fermions, and their mixtures can be addressed within the present experimental know-how. This way, fundamental concepts of quantum science and many-body physics , like macroscopic quantum coherence, solitons , vortex dynamics, fermionic pairing and BEC-BCS crossover can be studied from a novel perspective. Finally, we discuss how persistent currents can form the basis of new technological applications like matter-wave gyroscopes and interferometers.

arXiv:2410.17318•Physics Reports•Jul 8, 2025•20 citations

Persistent Currents in Atomtronic Circuits of SU(N) Fermions

Wayne Jordan Chetcuti

Ultracold atomic systems have emerged as strong contenders amongst the various quantum systems relevant for developing and implementing quantum technologies due to their enhanced control and flexibility of the operating conditions. In this thesis, we explore persistent currents generated in a ring-shaped quantum gas of strongly interacting \textit{N}-component fermions, specifically the so-called SU(\textit{N}) fermions. Our results, apart from being a relevant contribution to many-body physics, prove the `primum mobile' for a new concept of matter-wave circuits based on SU(\textit{N}) fermionic platforms, opening an exciting chapter in the field of atomtronics. Indeed, the specific properties of quantization are expected to provide the core to fabricate quantum devices with enhanced sensitivity like interferometers. At the same time, SU(\textit{N}) fermionic circuits show promise in engineering cold atoms quantum simulators with this artificial fermionic matter.

arXiv:2311.03072•Nov 6, 2023•2 citations

Roadmap on Atomtronics

Luigi Amico A, M. G. Boshier, G. Birkl +54 more

Atomtronics is an emerging field of quantum technology dealing with matter-wave circuits of ultra-cold atoms manipulated in magnetic or laser-generated guides of different shapes and intensity. Atomtronic circuits are promised to define quantum networks of new types in which coherent fluids can be feasibly controlled with the know how of the atomic and molecular physics quantum technology. This way, atomtronics can provide the basis for new quantum devices with enhanced precision, control and flexibility. At the same time, new quantum simulators and emulators harnessing coherent current flows can be defined. Here, we survey the atomtronics-enabled quantum technology and we draw a roadmap on the field for the years to come. The latest progress achieved in matter-wave circuits design and atom-chips are reviewed. Atomtronic networks have been used as platforms to study many-body physics in a new way, both at equilibrium and at non-equilibrium. Relevant problems in mesoscopic physics, like persistent currents and quantum transport in circuits of fermionic or bosonic atoms, have been studied with a new twist. We discuss the state of the art and the perspectives for the quantum devices and sensors implied by coherent matter-wave physics principles. Finally, we discuss alkali-earth and Rydberg atoms as great potential platforms for the realization of atomtronic circuits of a new type.

•Nov 5, 2020•7 citations
Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter-wave circuits for fundamental studies in both quantum science and technological applications.I will present the principles of persistent currents for atoms subjected to artificial gauge fields. For the case of a tight transverse confinement, where the system is effectively one-dimensional, I will detail the theoretical models we use to account for the effects of interactions, from weak to strong. I will then present our results on the persistent currents for both bosons and multi-component Fermi gases, as well as the readout protocols envisaged. Finally, I will discuss possible applications to quantum technologies.
Atomtronics is an emerging field that aims to manipulate ultracold atom moving in matter wave circuits for both fundamental studies in quantum science and technological applications. In this colloquium, we review recent progress in matter-wave circuitry and atomtronics-based quantum technology. After a short introduction to the basic physical principles and the key experimental techniques needed to realize atomtronic systems, we describe the physics of matter-waves in simple circuits such as ring traps and two-terminal systems. The main experimental observations and outstanding questions are discussed. We also present possible applications to a broad range of quantum technologies, from quantum sensing with atom interferometry to future quantum simulation and quantum computation architectures.
A new millennia ushered in novel experimental capabilities to investigate engineered quantum systems. Gases consisting of charge neutral atoms are cooled to the ground state and by exploiting the dipole interaction can be trapped by laser light. In ultracold atomic systems the tunneling and interactions are controllable, and the system is absent of disorder. Disorder and interactions in solid-state systems inhibits a complete understanding of transport phenomena. Theoretical investigations into non-equilibrium and equilibrium dynamics of fermions in discretized potentials and in continuum are presented. The affect of controllable, external system parameters is evaluated and exploited to reveal new properties of fermion dynamics. My thesis will begin with an overview of the physics associated with many-body fermion and the models used to obtain results, followed by my thesis research on how matter-waves can be manipulated by lattice geometry and tunneling strengths. Next, I present how dissipation affects current in a continuous ring, demonstrating rate-dependent hysteresis as the particles are driven by an artificial gauge field. After presenting the continuous ring, I will then focus on persistent current and corresponding quantum current fluctuations in a discretized ring. Lissajous curves are found in the system whose area strongly depends on the presence and absence of interactions. Lastly, I will discuss dynamical detection methods for one-dimensional topological insulators using ultracold fermions. All of the results are supported with discussion on how they can be realized using current experimental technology.
Persistent currents flowing in spatially closed tracks define one of the most iconic concepts in mesoscopic physics . They have been studied in solid-state platforms such as superfluids , superconductors and metals. Cold atoms trapped in magneto-optical toroidal circuits and driven by suitable artificial gauge fields allow us to study persistent currents with unprecedented control and flexibility of the system’s physical conditions. Here, we review persistent currents of ultracold matter. Capitalizing on the remarkable progress in driving different atomic species to quantum degeneracy, persistent currents of single or multicomponent bosons/fermions, and their mixtures can be addressed within the present experimental know-how. This way, fundamental concepts of quantum science and many-body physics , like macroscopic quantum coherence, solitons , vortex dynamics, fermionic pairing and BEC-BCS crossover can be studied from a novel perspective. Finally, we discuss how persistent currents can form the basis of new technological applications like matter-wave gyroscopes and interferometers.
Ultracold atomic systems have emerged as strong contenders amongst the various quantum systems relevant for developing and implementing quantum technologies due to their enhanced control and flexibility of the operating conditions. In this thesis, we explore persistent currents generated in a ring-shaped quantum gas of strongly interacting \textit{N}-component fermions, specifically the so-called SU(\textit{N}) fermions. Our results, apart from being a relevant contribution to many-body physics, prove the `primum mobile' for a new concept of matter-wave circuits based on SU(\textit{N}) fermionic platforms, opening an exciting chapter in the field of atomtronics. Indeed, the specific properties of quantization are expected to provide the core to fabricate quantum devices with enhanced sensitivity like interferometers. At the same time, SU(\textit{N}) fermionic circuits show promise in engineering cold atoms quantum simulators with this artificial fermionic matter.
Atomtronics is an emerging field of quantum technology dealing with matter-wave circuits of ultra-cold atoms manipulated in magnetic or laser-generated guides of different shapes and intensity. Atomtronic circuits are promised to define quantum networks of new types in which coherent fluids can be feasibly controlled with the know how of the atomic and molecular physics quantum technology. This way, atomtronics can provide the basis for new quantum devices with enhanced precision, control and flexibility. At the same time, new quantum simulators and emulators harnessing coherent current flows can be defined. Here, we survey the atomtronics-enabled quantum technology and we draw a roadmap on the field for the years to come. The latest progress achieved in matter-wave circuits design and atom-chips are reviewed. Atomtronic networks have been used as platforms to study many-body physics in a new way, both at equilibrium and at non-equilibrium. Relevant problems in mesoscopic physics, like persistent currents and quantum transport in circuits of fermionic or bosonic atoms, have been studied with a new twist. We discuss the state of the art and the perspectives for the quantum devices and sensors implied by coherent matter-wave physics principles. Finally, we discuss alkali-earth and Rydberg atoms as great potential platforms for the realization of atomtronic circuits of a new type.