Collective Quantum Entanglement in Molecular Cavity Optomechanics

• URL: http://arxiv.org/abs/2405.12102v3
• Date: Sat, 25 May 2024 13:09:09 GMT
• Title: Collective Quantum Entanglement in Molecular Cavity Optomechanics
• Authors: Jian Huang, Dangyuan Lei, Girish S. Agarwal, Zhedong Zhang,
• Abstract summary: We propose an optomechanical scheme for reaching quantum entanglement in vibration polaritons. We find that the vibration-photon entanglement can exist at room temperature and is robust against thermal noise.
• Score: 2.112879345526381
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose an optomechanical scheme for reaching quantum entanglement in vibration polaritons. The system involves $N$ molecules, whose vibrations can be fairly entangled with plasmonic cavities. We find that the vibration-photon entanglement can exist at room temperature and is robust against thermal noise. We further demonstrate the quantum entanglement between the vibrational modes through the plasmonic cavities, which shows a delocalized nature and an incredible enhancement with the number of molecules. The underlying mechanism for the entanglement is attributed to the strong vibration-cavity coupling which possesses collectivity. Our results provide a molecular optomechanical scheme which offers a promising platform for the study of noise-free quantum resources and macroscopic quantum phenomena.

Related papers

• Nonreciprocal entanglement in molecular optomechanical system [0.0]
  We find that nonreciprocal photon-vibration entanglement and nonreciprocal vibration-vibration entanglement can exist in our system at high temperatures. Our work finds applications in quantum information transmission.
  arXiv  Detail & Related papers  (2025-01-23T19:23:06Z)
• Steering Non-Equilibrium Molecular Dynamics in Optical Cavities [11.581137921729066]
  We study cooperative vibrational strong coupling in an open quantum system. Our work offers a pathway to steer stability of chemical bonds for chemical reactivity under cooperative vibrational strong coupling.
  arXiv  Detail & Related papers  (2024-12-10T15:28:00Z)
• Quantum-induced Stochastic Optomechanical Dynamics [0.0]
  Quantum fluctuations lead to state-dependent non-equilibrium noise, which is exponentially enhanced by wavepacket delocalization. For the case of nanoparticles coupled by the Coulomb interaction such noise can imprint potentially measurable signatures in multiparticle levitation experiments.
  arXiv  Detail & Related papers  (2024-01-29T19:30:21Z)
• Resolving nonclassical magnon composition of a magnetic ground state via a qubit [44.99833362998488]
  We show that a direct dispersive coupling between a qubit and a noneigenmode magnon enables detecting the magnonic number states' quantum superposition. This unique coupling is found to enable control over the equilibrium magnon squeezing and a deterministic generation of squeezed even Fock states.
  arXiv  Detail & Related papers  (2023-06-08T09:30:04Z)
• Probing the symmetry breaking of a light--matter system by an ancillary qubit [50.591267188664666]
  Hybrid quantum systems in the ultrastrong, and even more in the deep-strong, coupling regimes can exhibit exotic physical phenomena. We experimentally observe the parity symmetry breaking of an ancillary Xmon artificial atom induced by the field of a lumped-element superconducting resonator. This result opens a way to experimentally explore the novel quantum-vacuum effects emerging in the deep-strong coupling regime.
  arXiv  Detail & Related papers  (2022-09-13T06:14:08Z)
• 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)
• Fano Resonances in Quantum Transport with Vibrations [50.591267188664666]
  Quantum mechanical scattering continuum states coupled to a scatterer with a discrete spectrum gives rise to Fano resonances. We consider scatterers that possess internal vibrational degrees of freedom in addition to discrete states.
  arXiv  Detail & Related papers  (2021-08-07T12:13:59Z)
• Visualizing spinon Fermi surfaces with time-dependent spectroscopy [62.997667081978825]
  We propose applying time-dependent photo-emission spectroscopy, an established tool in solid state systems, in cold atom quantum simulators. We show in exact diagonalization simulations of the one-dimensional $t-J$ model that the spinons start to populate previously unoccupied states in an effective band structure. The dependence of the spectral function on the time after the pump pulse reveals collective interactions among spinons.
  arXiv  Detail & Related papers  (2021-05-27T18:00:02Z)
• Quantum control of a nanoparticle optically levitated in cryogenic free space [0.0]
  Tests of quantum mechanics on a macroscopic scale require extreme control over mechanical motion and its decoherence. In this work, we optically levitate a femto-gram dielectric particle in cryogenic free space. We cool its center-of-mass motion by measurement-based feedback to an average occupancy of 0.65 motional quanta, corresponding to a state purity of 43%.
  arXiv  Detail & Related papers  (2021-03-05T18:12:50Z)
• Spin Entanglement and Magnetic Competition via Long-range Interactions in Spinor Quantum Optical Lattices [62.997667081978825]
  We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter. We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios. These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
  arXiv  Detail & Related papers  (2020-11-16T08:03:44Z)
• Molecule-photon interactions in phononic environments [0.0879626117219674]
  Liquid quantum optical systems can interface photons, electronic degrees of freedom, localized mechanical vibrations and phonons. In particular, the strong vibronic interaction between electrons and nuclear motion in a molecule resembles the optomechanical radiation pressure Hamiltonian. We take here an open quantum system approach to the non-equilibrium dynamics of molecules embedded in a crystal.
  arXiv  Detail & Related papers  (2019-12-05T15:11:46Z)

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.