Multipartite entangled states with two bosonic modes and qubits

Abstract

We theoretically investigate the role of different phases of coupling constants in the dynamics of atoms and two cavity modes, observing deterministic generation of prototype or hybrid Bell, W, GHZ, and cluster states. Commonly induced dipole-dipole interactions (far-off resonance) are inhibited between particular pairs of qubits under suitable choice of those phases. We evaluate the generation fidelities when imperfections such as dissipative environments and time precision errors are considered. We show violation of local realism for the generated cluster state under such imperfections, even when approaching the weak coupling regime.

Dissipative two-mode Tavis-Cummings model with time-delayed feedback control

“…To generate a lasing behavior and the interesting dynamics we add decay channels and incoherent pumping to the system. We note in passing that two-mode Jaynes-Cummings models were studied in the past either with mode degeneracy [28,29] or without dissipative effects [30] or without pumping of the atomic system but in presence of additional driving of the cavity mode [31,32]. Following Ref.…”

Entangled network and quantum communication

“…[4] discussed the entanglement evolution of multi-qubit systems when one of its qubits is subjected to a general noisy channel. Multipartite entangled states with two bosonic modes and qubits have been discussed by Munhoz and Semião [5]. Perseguers and et.al.…”

Unitary decoupling treatment of a quadratic bimodal cavity quantum electrodynamics model

“…This explains the growing theoretical and experimental interest toward such systems [20], [28], [31], [32], [33], [34], [35], [36], [37], [38]. It is of relevance that quite recently a maximally entangled state of two modes of a high-Q cavity has been experimentally demonstrated [27], [32]. The scope of this paper is to show that the Hamiltonian model of bimodal degenerate cavity resonantly coupled by two-photon processes to a single two-level atom is unitarily equivalent to a generalized exactly solvable quadratic JCM and a further collective quantized free evolving mode.…”

“…The aim is to drive and to reveal the appearance of quantum correlations [17], [28], [29] which might be useful also for implementing quantum information protocols [28], [30]. This explains the growing theoretical and experimental interest toward such systems [20], [28], [31], [32], [33], [34], [35], [36], [37], [38]. It is of relevance that quite recently a maximally entangled state of two modes of a high-Q cavity has been experimentally demonstrated [27], [32].…”