100 citations · 450 across the 18 of their papers we have counts for
18 papers
Optical depth dictates universal bounds on many-body decay in atomic ensembles
Cosimo C. Rusconi, Eric Sierra, Wai-Keong Mok +3
Cooperative emission is well understood for idealized symmetric systems, but its fundamental limits in spatially extended, free-space ensembles remain an open question. Here, we de…
Polaron-Polaritons in Subwavelength Arrays of Trapped Atoms
Kristian Knakkergaard Nielsen, Lukas Wangler, David Castells-Graells +4
Subwavelength arrays of atoms trapped in optical lattices or tweezers are inherently susceptible to deformations: Optomechanical forces displace atoms within their trapping potenti…
Optomechanical self-organization in a mesoscopic atom array
Jacquelyn Ho, Yue-Hui Lu, Tai Xiang +5
Increasing the number of particles in a system often leads to qualitative changes in its properties, such as breaking of symmetries and the appearance of phase transitions. This re…
Universal scaling laws for correlated decay of many-body quantum systems
Wai-Keong Mok, Avishi Poddar, Eric Sierra +3
Quantum systems are open, continually exchanging energy and information with the surrounding environment. This interaction leads to decoherence and decay of quantum states. In comp…
Collectively enhanced ground-state cooling in subwavelength atomic arrays
Oriol Rubies-Bigorda, Raphael Holzinger, Ana Asenjo-Garcia +6
Subwavelength atomic arrays feature strong light-induced dipole-dipole interactions, resulting in subradiant collective resonances characterized by narrowed linewidths. In this wor…
Spin Read-out of the Motion of Levitated Electrically Rotated Diamonds
Maxime Perdriat, Cosimo C. Rusconi, Tom Delord +4
Recent advancements with trapped nano- and micro-particles have enabled the exploration of motional states on unprecedented scales. Rotational degrees of freedom stand out due to t…
Spin-Controlled Quantum Interference of Levitated Nanorotors
Cosimo C. Rusconi, Maxime Perdriat, Gabriel Hétet +2
We describe how to prepare an electrically levitated nanodiamond in a superposition of orientations via microwave driving of a single embedded nitrogen-vacancy (NV) center. Suitabl…
Atomic waveguide QED with atomic dimers
David Castells-Graells, Daniel Malz, Cosimo C. Rusconi +1
Quantum emitters coupled to a waveguide is a paradigm of quantum optics, whose essential properties are described by waveguide quantum electrodynamics (QED). We study the possibili…
Exploiting the Photonic Non-linearity of Free Space Subwavelength Arrays of Atoms
Cosimo C. Rusconi, Tao Shi, J. Ignacio Cirac
Ordered ensembles of atoms, such as atomic arrays, exhibit distinctive features from their disordered counterpart. In particular, while collective modes in disordered ensembles sho…
Stability of a Magnetically Levitated Nanomagnet in Vacuum: Effects of Gas and Magnetization Damping
Katja Kustura, Vanessa Wachter, Adrián E. Rubio López +1
In the absence of dissipation a non-rotating magnetic nanoparticle can be stably levitated in a static magnetic field as a consequence of the spin origin of its magnetization. Here…
Single-Spin Magnetomechanics with Levitated Micromagnets
Jan Gieseler, Aaron Kabcenell, Emma Rosenfeld +7
We demonstrate a new mechanical transduction platform for individual spin qubits. In our approach, single micro-magnets are trapped using a type-II superconductor in proximity of s…
Quadratic Quantum Hamiltonians: General Canonical Transformation to a Normal Form
Katja Kustura, Cosimo C. Rusconi, Oriol Romero-Isart
A system of linearly coupled quantum harmonic oscillators can be diagonalized when the system is dynamically stable using a Bogoliubov canonical transformation. However, this is ju…
Hybrid Architecture for Engineering Magnonic Quantum Networks
C. C. Rusconi, M. J. A. Schuetz, J. Gieseler +2
We show theoretically that a network of superconducting loops and magnetic particles can be used to implement magnonic crystals with tunable magnonic band structures. In our approa…
Quantum Spin Stabilized Magnetic Levitation
Cosimo C. Rusconi, Vera Pöchhacker, Katja Kustura +2
We theoretically show that, despite Earnshaw's theorem, a non-rotating single magnetic domain nanoparticle can be stably levitated in an external static magnetic field. The stabili…
Ultrasensitive Inertial and Force Sensors with Diamagnetically Levitated Magnets
J. Prat-Camps, C. Teo, C. C. Rusconi +2
We theoretically show that a magnet can be stably levitated on top of a punctured superconductor sheet in the Meissner state without applying any external field. The trapping poten…
Linear Stability Analysis of a Levitated Nanomagnet in a Static Magnetic Field: Quantum Spin Stabilized Magnetic Levitation
Cosimo C. Rusconi, Vera Pöchhacker, J. Ignacio Cirac +1
We theoretically study the levitation of a single magnetic domain nanosphere in an external static magnetic field. We show that apart from the stability provided by the mechanical…
Magnetic Rigid Rotor in the Quantum Regime: Theoretical Toolbox
Cosimo C. Rusconi, Oriol Romero-Isart
We describe the quantum dynamics of a magnetic rigid rotor in the mesoscopic scale where the Einstein-De Haas effect is predominant. In particular, we consider a single-domain magn…
State estimation: direct state measurement vs. tomography
Lorenzo Maccone, Cosimo C. Rusconi
We compare direct state measurement (DST or weak state tomography) to conventional state reconstruction (tomography) through accurate Monte-Carlo simulations. We show that DST is s…