Zobrazeno 1 - 10
of 1 114
pro vyhledávání: '"Fazio, Rosario"'
We investigate the use of a boundary time crystals (BTCs) as sensors of AC fields. Boundary time crystals are non-equilibrium phases of matter in contact to an environment, for which a macroscopic fraction of the many-body system breaks the time tran
Externí odkaz:
http://arxiv.org/abs/2406.06273
We introduce a stochastic spin-wave theory tailored to describe quantum trajectories in continuously monitored long-range interacting spin systems. Our method, based on the bosonization of spin-wave excitations on top of a strong collective polarizat
Externí odkaz:
http://arxiv.org/abs/2405.12124
Typical measures of nonstabilizerness of a system of $N$ qubits require computing $4^N$ expectation values, one for each Pauli string in the Pauli group, over a state of dimension $2^N$. For permutationally invariant systems, this exponential overhea
Externí odkaz:
http://arxiv.org/abs/2402.08551
We investigate the dissipative phase transitions of the anisotropic quantum Rabi model with cavity decay and demonstrate that large spin fluctuations persist in the stationary state, having important consequences on the phase diagram and the critical
Externí odkaz:
http://arxiv.org/abs/2312.06376
Magic describes the distance of a quantum state to its closest stabilizer state. It is -- like entanglement -- a necessary resource for a potential quantum advantage over classical computing. We study magic, quantified by stabilizer entropy, in a hyb
Externí odkaz:
http://arxiv.org/abs/2312.02039
Repeated measurements can induce entanglement phase transitions in the dynamics of quantum systems. Interacting models, both chaotic and integrable, generically show a stable volume-law entangled phase at low measurement rates which disappears for fr
Externí odkaz:
http://arxiv.org/abs/2311.09043
Quantum many-body scars (QMBS) are exceptional energy eigenstates of quantum many-body systems associated with violations of thermalization for special non-equilibrium initial states. Their various systematic constructions require fine-tuning of loca
Externí odkaz:
http://arxiv.org/abs/2309.12504
Publikováno v:
Phys. Rev. B 109, L060302 (2024)
Interspersing unitary dynamics with local measurements results in measurement-induced phases and transitions in many-body quantum systems. When the evolution is driven by a local Hamiltonian, two types of transitions have been observed, characterized
Externí odkaz:
http://arxiv.org/abs/2308.09133
Publikováno v:
Physical Review A 108 (3), 032219 (2023)
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 domain by coupling quantum interacting rotors to external baths followi
Externí odkaz:
http://arxiv.org/abs/2306.09956
Publikováno v:
Phys. Rev. A 109, L050203 (2024)
The long range spatial and temporal ordering displayed by discrete time crystals, can become advantageous properties when used for sensing extremely weak signals. Here, we investigate their performance as quantum sensors of weak AC-fields and demonst
Externí odkaz:
http://arxiv.org/abs/2306.03927