Bath‐Induced Collective Phenomena on Superconducting Qubits: Synchronization, Subradiance, and Entanglement Generation
Year: 2021
Type: article
Abstract: A common environment acting on a pair of qubits gives rise to a plethora of different phenomena, such as the generation of qubit–qubit entanglement, quantum synchronization, and subradiance. Here, time‐independent figures of merit for entanglement generation, quantum synchronization, and subradiance are defined, and an extensive analytical and numerical study of their dependence on model parameters is performed. A recently proposed measure of the collectiveness of the dynamics driven by the bath is also addressed, and it is found that it almost perfectly witnesses the behavior of entanglement generation. The results show that synchronization and subradiance can be employed as reliable local signatures of an entangling common‐bath in a general scenario. Finally, an experimental implementation of the model based on two transmon qubits capacitively coupled to a common resistor is proposed, which provides a versatile quantum simulation platform of the open system in any regime.
Source: Annalen der Physik
Authors: Marco Cattaneo, Gian Luca Giorgi, Sabrina Maniscalco, Gheorghe Sorin Paraoanu, Roberta Zambrini
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,800
Awards: G1175115578, G171761713, G1722860036, G2262748287, G2373305540, G257223322, G2601397997, G300979063, G3020228430, G3480869486, G3610682808, G3681454997, G4042783231, G425668148, G434337789, G5080475149, G5195188938, Quantum readout techniques and technologies, G615368651, G7084143925, Finnish Centre of Excellence in Quantum Technology, G8255908834, G8684520763, G916329020
OpenAlex ID: W3121267918