Direct observation of time-dependent coherent chiral tunneling dynamics

• URL: http://arxiv.org/abs/2412.06682v1
• Date: Mon, 09 Dec 2024 17:25:36 GMT
• Title: Direct observation of time-dependent coherent chiral tunneling dynamics
• Authors: Wenhao Sun, Denis S. Tikhonov, Melanie Schnell,
• Abstract summary: Superpositions of handed molecular states give rise to achiral eigenstates, delocalized across a double-well potential via tunneling. A coherent superposition of these energy eigenstates could dynamically relocalize the molecules into chiral states. We present a microwave six-wave mixing pump-probe study to create and probe coherent chiral tunneling dynamics in a rotational state.
• Score: 0.20482269513546458
• License:
• Abstract: Superpositions of handed molecular states give rise to achiral eigenstates, delocalized across a double-well potential via tunneling. A coherent superposition of these energy eigenstates could dynamically relocalize the molecules into chiral states, which has only been addressed theoretically. Here, we present a microwave six-wave mixing pump-probe study to create and probe coherent chiral tunneling dynamics in a rotational state. Through a time-resolved scheme, we uncover the periodic time evolution of the induced chiral wavepacket under field-free conditions. Moreover, we demonstrate precise phase control of this coherence via phase modulation during pump excitation.

Related papers

• Self-interaction induced phase modulation for directed current, energy diffusion and quantum scrambling in a Floquet ratchet system [0.0]
  We investigate the dynamics of directed current, mean energy, and quantum scrambling in an interacting Floquet system with a ratchet potential. The directed current is controlled by the phase of the ratchet potential and remains independent of the self-interaction strength. The phase modulation induced by self-interaction dominates the quadratic growth of both mean energy and Out-of-Time-Ordered Correlators (OTOCs)
  arXiv  Detail & Related papers  (2024-11-01T22:17:24Z)
• The manifestations of 'l-Doubling' in gas-phase rotational dynamics [0.0]
  The 'l-Doubling' phenomenon emanates from the coupling between molecular rotations and perpendicular vibrations (bending modes) in polyatomic molecules. Here we explore and unveil the ramifications of 'l-Doubling' to the coherent rotational dynamics of triatomic molecules at ambient temperatures and above. The observed 'l-Doubling' dynamics may be wrongly considered as collisional decay throughout the first few hundreds of picoseconds past excitation.
  arXiv  Detail & Related papers  (2024-10-09T10:32:26Z)
• Flipping electric dipole in the vibrational wave packet dynamics of carbon monoxide [0.0]
  Recently Rydberg atom-ion bound states have been observed using a high resolution ion microscope. We investigate whether a similar behavior can also occur for ground state diatomic molecules.
  arXiv  Detail & Related papers  (2024-03-06T21:32:22Z)
• Quantum control of ro-vibrational dynamics and application to light-induced molecular chirality [39.58317527488534]
  Achiral molecules can be made temporarily chiral by excitation with electric fields. We go beyond the assumption of molecular orientations to remain fixed during the excitation process.
  arXiv  Detail & Related papers  (2023-10-17T20:33:25Z)
• Tuning long-range fermion-mediated interactions in cold-atom quantum simulators [68.8204255655161]
  Engineering long-range interactions in cold-atom quantum simulators can lead to exotic quantum many-body behavior. Here, we propose several tuning knobs, accessible in current experimental platforms, that allow to further control the range and shape of the mediated interactions.
  arXiv  Detail & Related papers  (2022-03-31T13:32:12Z)
• Self-oscillating pump in a topological dissipative atom-cavity system [55.41644538483948]
  We report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator. Due to dissipation, the cavity field evolves between its two quadratures, each corresponding to a different centrosymmetric crystal configuration. This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models.
  arXiv  Detail & Related papers  (2021-12-21T19:57:30Z)
• 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)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)
• 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)
• Zitterbewegung and Klein-tunneling phenomena for transient quantum waves [77.34726150561087]
  We show that the Zitterbewegung effect manifests itself as a series of quantum beats of the particle density in the long-time limit. We also find a time-domain where the particle density of the point source is governed by the propagation of a main wavefront. The relative positions of these wavefronts are used to investigate the time-delay of quantum waves in the Klein-tunneling regime.
  arXiv  Detail & Related papers  (2020-03-09T21:27:02Z)

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.