284 citations · 2.4k across the 70 of their papers we have counts for
31 papers · 1 filter
Gradually opening Schrödinger's box reveals a cascade of sharp dynamical transitions
Barkay Guttel, Danielle Gov, Noam Netzer +9
Quantum mechanics predicts that unobserved systems may exist in a superposition of states, yet measurement produces definite outcomes, a tension at the heart of the quantum-to-clas…
Measurement-induced phase transition in interacting bosons from most likely quantum trajectory
Anna Delmonte, Zejian Li, Rosario Fazio +1
We propose a new theoretical method to describe the monitored dynamics of bosonic many-body systems based on the concept of the most likely trajectory. We show how such trajectory…
Theory of the correlated quantum Zeno effect in a monitored qubit dimer
Severino Zeni, Gobinda Chakraborty, Alessandro Romito +1
We theoretically investigate the stochastic dynamics of two qubits subject to one- and two-site correlated continuous weak measurements. When measurements dominate over the local u…
Entanglement and operator correlation signatures of many-body quantum Zeno phases in inefficiently monitored noisy systems
Chun Y. Leung, Alessandro Romito
The interplay between information-scrambling Hamiltonians and local continuous measurements hosts platforms for exotic measurement-induced phase transition in out-of-equilibrium st…
Controlling measurement-induced phase transitions with tunable detector coupling
Ritu Nehra, Alessandro Romito, Dganit Meidan
We study the evolution of a quantum many-body system driven by two competing measurements, which induces a topological entanglement transition between two distinct area law phases.…
Stochastic action for the entanglement of a noisy monitored two-qubit system
Dominic Shea, Alessandro Romito
We study the effect of local unitary noise on the entanglement evolution of a two-qubit system subject to local monitoring and inter-qubit coupling. We construct a stochastic Hamil…
Effect of the readout efficiency of quantum measurement on the system entanglement
Christian Carisch, Oded Zilberberg, Alessandro Romito
Monitored quantum systems evolve along stochastic trajectories correlated with the observer's knowledge of the system's state. Under such dynamics, certain quantum resources like e…
Action formalism for geometric phases from self-closing quantum trajectories
Dominic Shea, Alessandro Romito
When subject to measurements, quantum systems evolve along stochastic quantum trajectories that can be naturally equipped with a geometric phase observable via a post-selection in…
Theory of free fermions dynamics under partial post-selected monitoring
Chun Y. Leung, Dganit Meidan, Alessandro Romito
Monitored quantum systems undergo Measurement-induced Phase Transitions (MiPTs) stemming from the interplay between measurements and unitary dynamics. When the detector readout is…
Spectral chaos bounds from scaling theory of maximally efficient quantum-dynamical scrambling
Tara Kalsi, Alessandro Romito, Henning Schomerus
A key conjecture about the evolution of complex quantum systems towards an ergodic steady state, known as scrambling, is that this process acquires universal features when it is mo…
Quantum Effects on the Synchronization Dynamics of the Kuramoto Model
Anna Delmonte, Alessandro Romito, Giuseppe E. Santoro +1
The Kuramoto model serves as a paradigm for describing spontaneous synchronization in a system of classical interacting rotors. In this study, we extend this model to the quantum d…
Quantifying measurement-induced quantum-to-classical crossover using an open-system entanglement measure
Christian Carisch, Alessandro Romito, Oded Zilberberg
The evolution of a quantum system subject to measurements can be described by stochastic quantum trajectories of pure states. Instead, the ensemble average over trajectories is a m…
Dissipative preparation and stabilization of many-body quantum states in a superconducting qutrit array
Yunzhao Wang, Kyrylo Snizhko, Alessandro Romito +2
We present and analyze a protocol for driven-dissipatively preparing and stabilizing a manifold of quantum manybody entangled states with symmetry-protected topological order. Spec…
Topological transitions of the generalized Pancharatnam-Berry phase
Manuel F. Ferrer-Garcia, Kyrylo Snizhko, Alessio D'Errico +3
Distinct from the dynamical phase, in a cyclic evolution, a system's state may acquire an additional component, a.k.a. geometric phase. The latter is a manifestation of a closed pa…
Topological transitions with continuously monitored free fermions
Graham Kells, Dganit Meidan, Alessandro Romito
We study a free fermion model where two sets of non-commuting non-projective measurements stabilize area-law entanglement scaling phases of distinct topological order. We show the…
Diagnosing entanglement dynamics in noisy and disordered spin chains via the measurement-induced steady-state entanglement transition
T. Boorman, M. Szyniszewski, H. Schomerus +1
We utilize the concept of a measurement-induced entanglement transition to analyze the interplay and competition of processes that generate and destroy entanglement in a one-dimens…
Observing a Topological Transition in Weak-Measurement-Induced Geometric Phases
Yunzhao Wang, Kyrylo Snizhko, Alessandro Romito +2
Measurement plays a quintessential role in the control of quantum systems. Beyond initialization and readout which pertain to projective measurements, weak measurements in particul…
Quantum Zeno effect with partial measurement and noisy dynamics
Parveen Kumar, Alessandro Romito, Kyrylo Snizhko
We study the Quantum Zeno Effect (QZE) induced by continuous partial measurement in the presence of short-correlated noise in the system Hamiltonian. We study the survival probabil…
Quantum Zeno effect appears in stages
Kyrylo Snizhko, Parveen Kumar, Alessandro Romito
In the quantum Zeno effect, quantum measurements can block the coherent oscillation of a two level system by freezing its state to one of the measurement eigenstates. The effect is…
Topological transition in measurement-induced geometric phases
Valentin Gebhart, Kyrylo Snizhko, Thomas Wellens +3
The state of a quantum system, adiabatically driven in a cycle, may acquire a measurable phase depending only on the closed trajectory in parameter space. Such geometric phases are…
Efficiency of a cyclic quantum heat engine with finite-size baths
M. Hamed Mohammady, Alessandro Romito
In this paper we investigate the relationship between the efficiency of a cyclic quantum heat engine with the Hilbert space dimension of the thermal baths. By means of a general in…
Symmetry constrained decoherence of conditional expectation values
M. Hamed Mohammady, Alessandro Romito
Conditional expectation values of quantum mechanical observables reflect unique non-classical correlations, and are generally sensitive to decoherence. We consider the circumstance…
Conditional work statistics of quantum measurements
M. Hamed Mohammady, Alessandro Romito
In this paper we introduce a definition for conditional energy changes due to general quantum measurements, as the change in the conditional energy evaluated before, and after, the…
Information gain and loss for a quantum Maxwell's demon
M. Naghiloo, J. J. Alonso, A. Romito +2
We use continuous weak measurements of a driven superconducting qubit to experimentally study the information dynamics of a quantum Maxwell's demon. We show how information gained…