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6 papers · 2 filters
Selective continuous-variable quantum process tomography
Virginia Feldman, Ariel Bendersky
Quantum process tomography is a useful tool for characterizing quantum processes. This task is essential for the development of different areas, such as quantum information process…
Selective quantum state tomography for continuous-variable systems
Virginia Feldman, Ariel Bendersky
We present a protocol that allows the estimation of any density matrix element for continuous-variable quantum states, without resorting to the complete reconstruction of the full…
Impact of chaos on the excited-state quantum phase transition of the Kerr parametric oscillator
Ignacio García-Mata, Miguel A. Prado Reynoso, Rodrigo G. Cortiñas +4
The driven Kerr parametric oscillator, of interest to fundamental physics and quantum technologies, exhibits an excited state quantum phase transition (ESQPT) originating in an uns…
Exploring quantum ergodicity of unitary evolution through the Krylov approach
Gastón F. Scialchi, Augusto J. Roncaglia, Carlos Pineda +1
In recent years, there has been growing interest in characterizing the complexity of quantum evolutions of interacting many-body systems. When a time-independent Hamiltonian govern…
dc atomtronic quantum interference device: quantum superposition of persistent-current states and a parity-protected qubit
H. M. Cataldo
A generalized Bose-Hubbard model in a two-mode approximation is applied to study the rotational dynamics of a direct-current atomtronic quantum interference device. Modified values…
Geometric Phase of a Transmon in a Dissipative Quantum Circuit
Ludmila Viotti, Fernando C. Lombardo, Paula I. Villar
Superconducting circuits reveal themselves as promising physical devices with multiple uses. Within those uses, the fundamental concept of the geometric phase accumulated by the st…