Phase transition and multistability in Dicke dimer

• URL: http://arxiv.org/abs/2405.19633v1
• Date: Thu, 30 May 2024 02:34:41 GMT
• Title: Phase transition and multistability in Dicke dimer
• Authors: Yilun Xu, Feng-Xiao Sun, Wei Zhang, Qiongyi He, Han Pu,
• Abstract summary: Photon hopping between two Dicke cavities induces rich quantum phases for steady states and dynamic process. We show that photon hopping is a convenient and powerful tool to manipulate the quantum phases and induce multistable behavior in this system.
• Score: 9.457884028844415
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The exotic phase transitions and multistabilities in atom-cavity coupled systems have attracted tremendous interests recently. In this work, we investigate the effect of photon hopping between two Dicke cavities, which induces rich quantum phases for steady states and dynamic process. Starting from a generic dimer system where the two cavities are not necessarily identical, we analytically prove all possible steady-state phases, which are confirmed by numerical calculations. We then focus on the special case with two identical cavities, where all the steady states are confirmed by exact solutions. We show that photon hopping is a convenient and powerful tool to manipulate the quantum phases and induce multistable behavior in this system.

Related papers

• A dissipation-induced superradiant transition in a strontium cavity-QED system [0.0]
  In cavity quantum electrodynamics (QED), emitters and a resonator are coupled together to enable precise studies of quantum light-matter interactions. Here we provide an observation of the continuous superradiant phase transition predicted in the CRF model using an ensemble of ultracold $88$Sr atoms. Our observations are a first step towards finer control of driven-dissipative systems, which have been predicted to generate quantum states.
  arXiv  Detail & Related papers  (2024-08-20T18:00:00Z)
• Dynamics of a Generalized Dicke Model for Spin-1 Atoms [0.0]
  The Dicke model is a staple of theoretical cavity Quantum Electrodynamics (cavity QED) It demonstrates a rich variety of dynamics such as phase transitions, phase multistability, and chaos. The varied and complex behaviours admitted by the model highlights the need to more rigorously map its dynamics.
  arXiv  Detail & Related papers  (2024-03-04T04:09:35Z)
• Dynamics of spin-momentum entanglement from superradiant phase transitions [0.0]
  We consider an experimentally feasible many-body cavity QED model describing a four-level system. The resulting model comprises a pair of Dicke Hamiltonians constructed from pseudo-spin operators. We discuss the role of cavity losses in steering the system's dynamics into such entangled states.
  arXiv  Detail & Related papers  (2023-12-06T19:00:01Z)
• Nonequilibrium dynamics of the Jaynes-Cummings dimer [0.0]
  We investigate the nonequilibrium dynamics of a Josephson-coupled Jaynes-Cummings dimer in the presence of Kerr nonlinearity. Different types of transitions between the dynamical states lead to the self-trapping phenomenon. For a particular "self-trapped" state, the mutual information between the atomic qubits exhibits a direct correlation with the photon population imbalance.
  arXiv  Detail & Related papers  (2023-07-02T16:49:10Z)
• 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)
• Experimental Realization and Characterization of Stabilized Pair Coherent States [4.486044407450978]
  PCS is an interesting class of non-Gaussian continuous-variable entangled state. PCS is at the heart of a promising quantum error correction code: the pair cat code. We report an experimental demonstration of the pair coherent state of microwave photons in two superconducting cavities.
  arXiv  Detail & Related papers  (2022-09-23T15:24:25Z)
• Photon generation and entanglement in a double superconducting cavity [105.54048699217668]
  We study the dynamical Casimir effect in a double superconducting cavity in a quantum electrodynamics architecture. We study the creation of photons when the walls oscillate harmonically with a small amplitude.
  arXiv  Detail & Related papers  (2022-07-18T16:43:47Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Superposition of two-mode squeezed states for quantum information processing and quantum sensing [55.41644538483948]
  We investigate superpositions of two-mode squeezed states (TMSSs) TMSSs have potential applications to quantum information processing and quantum sensing.
  arXiv  Detail & Related papers  (2021-02-01T18:09:01Z)
• Engineering multipartite entangled states in doubly pumped parametric down-conversion processes [68.8204255655161]
  We investigate the quantum state generated by optical parametric down-conversion in a $chi(2) $ medium driven by two modes. The analysis shows the emergence of multipartite, namely 3- or 4-partite, entangled states in a subset of the modes generated by the process.
  arXiv  Detail & Related papers  (2020-07-23T13:53:12Z)

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.