GHZ-like states in the Qubit-Qudit Rabi Model

• URL: http://arxiv.org/abs/2104.12341v2
• Date: Mon, 5 Jul 2021 08:37:51 GMT
• Title: GHZ-like states in the Qubit-Qudit Rabi Model
• Authors: Yuan Shen, Giampiero Marchegiani, Gianluigi Catelani, Luigi Amico, Ai Qun Liu, Weijun Fan and Leong-Chuan Kwek
• Abstract summary: We study a Rabi type Hamiltonian system in which a qubit and a d-level quantum system (qudit) are coupled through a common resonator. The analysis show that the presence of the multilevels of the qudit effectively enhance the qubit-qudit interaction.
• Score: 21.370076704793373
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study a Rabi type Hamiltonian system in which a qubit and a d-level quantum system (qudit) are coupled through a common resonator. In the weak and strong coupling limits the spectrum is analysed through suitable perturbative schemes. The analysis show that the presence of the multilevels of the qudit effectively enhance the qubit-qudit interaction. The ground state of the strongly coupled system is a found of Greenberger-Horne-Zeilinger (GHZ) type. Therefore, despite the qubit-qudit strong coupling, the nature of the specific tripartite entanglement of the GHZ state suppress the bipartite entanglement. We analyze the system dynamics under quenching and adiabatic switching of the qubit-resonator and qudit-resonator couplings. In the quench case, we found that the non-adiabatic generations of photons in the resonator is enhanced by the number of levels in the qudit. The adiabatic control represents a possible route for preparation of GHZ states. Our analysis provides relevant information for future studies on coherent state transfer in qubit-qudit systems.

Related papers

• Efficiency of Dynamical Decoupling for (Almost) Any Spin-Boson Model [44.99833362998488]
  We analytically study the dynamical decoupling of a two-level system coupled with a structured bosonic environment. We find sufficient conditions under which dynamical decoupling works for such systems. Our bounds reproduce the correct scaling in various relevant system parameters.
  arXiv  Detail & Related papers  (2024-09-24T04:58:28Z)
• Longitudinal (curvature) couplings of an $N$-level qudit to a superconducting resonator at the adiabatic limit and beyond [0.0]
  We investigate the coupling between a multi-level system, or qudit, and a superconducting (SC) resonator's electromagnetic field. For the first time, we derive Hamiltonians describing the longitudinal multi-level interactions in a general dispersive regime. We provide examples illustrating the transition from adiabatic to dispersive coupling in different qubit systems.
  arXiv  Detail & Related papers  (2023-12-05T20:33:59Z)
• Dissipative stabilization of maximal entanglement between non-identical emitters via two-photon excitation [49.1574468325115]
  Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement. We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
  arXiv  Detail & Related papers  (2023-06-09T16:49:55Z)
• Characterising Polariton States in Non-Dispersive Regime of Circuit Quantum Electrodynamics [0.0]
  We fabricated and measured a superconducting transmon-resonator system in the non-dispersive regime. We report experimental studies of transitions between polariton states at varying driving powers and frequencies.
  arXiv  Detail & Related papers  (2023-02-09T09:31:12Z)
• Unconditional Wigner-negative mechanical entanglement with linear-and-quadratic optomechanical interactions [62.997667081978825]
  We propose two schemes for generating Wigner-negative entangled states unconditionally in mechanical resonators. We show analytically that both schemes stabilize a Wigner-negative entangled state that combines the entanglement of a two-mode squeezed vacuum with a cubic nonlinearity. We then perform extensive numerical simulations to test the robustness of Wigner-negative entanglement attained by approximate CPE states stabilized in the presence of thermal decoherence.
  arXiv  Detail & Related papers  (2023-02-07T19:00:08Z)
• Quantum emulation of the transient dynamics in the multistate Landau-Zener model [50.591267188664666]
  We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity. Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
  arXiv  Detail & Related papers  (2022-11-26T15:04:11Z)
• Quantum vibrational mode in a cavity confining a massless spinor field [91.3755431537592]
  We analyse the reaction of a massless (1+1)-dimensional spinor field to the harmonic motion of one cavity wall. We demonstrate that the system is able to convert bosons into fermion pairs at the lowest perturbative order.
  arXiv  Detail & Related papers  (2022-09-12T08:21:12Z)
• Characterization of an atom interferometer in the quasi-Bragg regime [58.720142291102135]
  We focus on an intermediate regime between the Raman-Nath and the Bragg regimes, the so-called quasi-Bragg regime. The experimental results are in a good agreement with a full numerical integration of the Schr"odinger equation.
  arXiv  Detail & Related papers  (2021-12-06T14:49:45Z)
• Dissipative entanglement generation between two driven qubits in circuit quantum electrodynamics [0.0]
  We explain the mechanism of entanglement generation in terms of an interplay between unitary Landau-Zener-Stuckelberg transitions. In this way, we found that the steady state of the system can be tuned to be arbitrarily close to a Bell state.
  arXiv  Detail & Related papers  (2021-11-16T23:05:22Z)
• Nonclassicality of open circuit QED systems in the deep-strong coupling regime [0.0]
  We investigate how the ground state of a qubit-resonator system is affected by the coupling to an environment. We show that the reduced density matrix of the qubit-resonator system strongly depends on how the system is coupled to the environment.
  arXiv  Detail & Related papers  (2020-06-30T13:21:07Z)
• Landau-Zener-St\"uckelberg Interferometry in dissipative Circuit Quantum Electrodynamics [0.0]
  We study Landau-Zener-St"uckelberg (LZS) interferometry in a cQED architecture under effects of dissipation. We unveil important differences in the resonant patterns between the Strong Coupling and Ultra Strong Coupling regimes in the qubit-resonator interaction.
  arXiv  Detail & Related papers  (2020-02-25T12:38:35Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.