177 citations · 1.1k across the 29 of their papers we have counts for
29 papers
Active Quantum Particles from Engineered Dissipation
Jeanne Gipouloux, Matteo Brunelli, Leticia Cugliandolo +2
We introduce and characterize different models for an active quantum particle where activity arises from engineered dissipation-- specifically, from a suitably coupled nonequilibri…
Optomechanical realization of the bosonic Kitaev-Majorana chain
Jesse J. Slim, Clara C. Wanjura, Matteo Brunelli +3
The fermionic Kitaev chain is a canonical model featuring topological Majorana zero modes. We report the experimental realization of its bosonic analogue in a nano-optomechanical n…
The Wave-Particle Duality in a Quantum Heat Engine
Marcelo Janovitch, Matteo Brunelli, Patrick P. Potts
According to the wave-particle duality (WPD), quantum systems show both particle- and wave-like behavior, and cannot be described using only one of these classical concepts. Identi…
Unconditional Wigner-negative mechanical entanglement with linear-and-quadratic optomechanical interactions
Peter McConnell, Oussama Houhou, Matteo Brunelli +1
The generation of entangled states that display negative values of the Wigner function in the quantum phase space is a challenging task, particularly elusive for massive, and possi…
The non-reciprocal Dicke model
Ezequiel I. Rodríguez Chiacchio, Andreas Nunnenkamp, Matteo Brunelli
We investigate the physics of an open two-component Dicke model, where the light field mediates non-reciprocal interactions between two spin species. We show that the model, which…
Optical coherent feedback control of a mechanical oscillator
Maryse Ernzer, Manel Bosch Aguilera, Matteo Brunelli +5
Feedback is a powerful and ubiquitous technique both in classical and quantum system control. Its standard implementation relies on measuring the state of a system, processing the…
Restoration of the non-Hermitian bulk-boundary correspondence via topological amplification
Matteo Brunelli, Clara C. Wanjura, Andreas Nunnenkamp
Non-Hermitian (NH) lattice Hamiltonians display a unique kind of energy gap and extreme sensitivity to boundary conditions. Due to the NH skin effect, the separation between edge a…
Quadrature nonreciprocity: unidirectional bosonic transmission without breaking time-reversal symmetry
Clara C. Wanjura, Jesse J. Slim, Javier del Pino +3
Nonreciprocity means that the transmission of a signal depends on its direction of propagation. Despite vastly different platforms and underlying working principles, the realisatio…
Unified Collision Model of Coherent and Measurement-based Quantum Feedback
Alfred Harwood, Matteo Brunelli, Alessio Serafini
We introduce a general framework, based on collision models and discrete CP-maps, to describe on an equal footing coherent and measurement-based feedback control of quantum mechani…
Stabilization of multi-mode Schrodinger cat states via normal-mode dissipation engineering
Petr Zapletal, Andreas Nunnenkamp, Matteo Brunelli
Non-Gaussian quantum states have been deterministically prepared and autonomously stabilized in single- and two-mode circuit quantum electrodynamics architectures via engineered di…
Unconditional mechanical squeezing via back-action evading measurements and non-optimal feedback control
Antonio Di Giovanni, Matteo Brunelli, Marco G. Genoni
Backaction-evading (BAE) measurements of a mechanical resonator, by continuously monitoring a single quadrature of motion, can achieve precision below the zero-point uncertainty. W…
Cavity optomechanics assisted by optical coherent feedback
Alfred Harwood, Matteo Brunelli, Alessio Serafini
We consider a wide family of optical coherent feedback loops acting on an optomechanical system operating in the linearized regime. We assess the efficacy of such loops in improvin…
Correspondence between non-Hermitian topology and directional amplification in the presence of disorder
Clara C. Wanjura, Matteo Brunelli, Andreas Nunnenkamp
In order for non-Hermitian (NH) topological effects to be relevant for practical applications, it is necessary to study disordered systems. In the absence of disorder, certain driv…
Assessing the role of initial correlations in the entropy production rate for non-equilibrium harmonic dynamics
Giorgio Zicari, Matteo Brunelli, Mauro Paternostro
Entropy production provides a general way to state the second law of thermodynamics for non-equilibrium scenarios. In open quantum system dynamics, it also serves as a useful quant…
Stroboscopic quantum optomechanics
Matteo Brunelli, Daniel Malz, Albert Schliesser +1
We consider an optomechanical cavity that is driven stroboscopically by a train of short pulses. By suitably choosing the inter-pulse spacing we show that ground-state cooling and…
Quantum correlations in -symmetric systems
Federico Roccati, Salvatore Lorenzo, G. Massimo Palma +3
We study the dynamics of correlations in a paradigmatic setup to observe -symmetric physics: a pair of coupled oscillators, one subject to a gain one to a loss. Start…
Topological framework for directional amplification in driven-dissipative cavity arrays
Clara C. Wanjura, Matteo Brunelli, Andreas Nunnenkamp
Directional amplification, in which signals are selectively amplified depending on their propagation direction, has attracted much attention as key resource for applications, inclu…
Conditional dynamics of optomechanical two-tone backaction-evading measurements
Matteo Brunelli, Daniel Malz, Andreas Nunnenkamp
Backaction-evading measurements of mechanical motion can achieve precision below the zero-point uncertainty and quantum squeezing, which makes them a resource for quantum metrology…
Dissipative synthesis of mechanical Fock-like states
Matteo Brunelli, Oussama Houhou
The observation of genuine quantum features of nano-mechanical motion is a key goal for both fundamental and applied quantum science. To this end, a promising approach is the stabi…
Linear-and-quadratic reservoir engineering of non-Gaussian states
Matteo Brunelli, Oussama Houhou
We study the dissipative preparation of pure non-Gaussian states of a target mode which is coupled both linearly and quadratically to an auxiliary damped mode. We show that any pur…
Unconditional preparation of nonclassical states via linear-and-quadratic optomechanics
Matteo Brunelli, Oussama Houhou, Darren W. Moore +3
Reservoir engineering enables the robust preparation of pure quantum states in noisy environments. We show how a new family of quantum states of a mechanical oscillator can be stab…
Detecting Gaussian entanglement via extractable work
Matteo Brunelli, Marco G. Genoni, Marco Barbieri +1
We show how the presence of entanglement in a bipartite Gaussian state can be detected by the amount of work extracted by a continuos variable Szilard-like device, where the bipart…
Irreversibility and correlations in coupled quantum oscillators
Matteo Brunelli, Mauro Paternostro
We investigate the link between the irreversibility generated by a stationary dissipative process and the correlations established within a composite quantum system. We provide two…
Quantum-limited estimation of continuous spontaneous localization
Sam McMillen, Matteo Brunelli, Matteo Carlesso +4
We apply the formalism of quantum estimation theory to extract information about potential collapse mechanisms of the continuous spontaneous localisation (CSL) form. In order to es…