Light-matter interaction inside an optical cavity: A perspective

• URL: http://arxiv.org/abs/2504.14266v2
• Date: Sun, 27 Apr 2025 13:34:07 GMT
• Title: Light-matter interaction inside an optical cavity: A perspective
• Authors: Anneswa Paul, Upendra Harbola,
• Abstract summary: We have categorized the light-matter coupling into four regimes depending on the validity of the RWA as moderate, strong, $0.1 leq lambda/omega_cleq 0.5$, ultra-strong, $0.5 leqlambda/omega_cleq 1.0$ and deep-strong, $lambda/omega_cgeq 1.0$.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Light-matter interaction inside an optical cavity and formation of polaritonic states have gained interest in the past decades as it has direct applications in many research fields. Different regimes of light-matter coupling have been studied using different approximations, one of which is rotating wave approximation(RWA), which is said to be valid for weak coupling and near resonant regimes. In this study, we have categorized the light-matter coupling into four regimes depending on the validity of the RWA as moderate, $\lambda/\omega_c\leq 0.1$, strong, $0.1 \leq \lambda/\omega_c\leq 0.5$, ultra-strong, $0.5 \leq\lambda/\omega_c\leq 1.0$ and deep-strong, $\lambda/\omega_c\geq 1.0$ coupling, where $\lambda$ is the coupling strength and $\omega_c$ is the cavity frequency. In experiments, vacuum Rabi-splitting has been observed which is a clear indication of formation of polaritonic states. It is a common misunderstanding that the cavity remains in vacuum state when the coupled system is in the ground state. Here we show that upon coupling, the cavity has non-zero excitation even in the ground state, which is not captured by RWA. In fact, RWA breaks down completely to predict the ground state properties as it fails to capture the interaction between the matter and the cavity field.

Related papers

• Ancilla quantum measurements on interacting chains: Sensitivity of entanglement dynamics to the type and concentration of detectors [46.76612530830571]
  We consider a quantum many-body lattice system that is coupled to ancillary degrees of freedom (detectors'') We explore the dynamics of density and of entanglement entropy in the chain, for various values of $rho_a$ and $M$.
  arXiv  Detail & Related papers  (2023-11-21T21:41:11Z)
• Vibropolaritonic Reaction Rates in the Collective Strong Coupling Regime: Pollak-Grabert-H\"anggi Theory [0.0]
  We show that the Pollak-Grabert-H"anggi (PGH) theory fails to capture the ensemble effects present in experiments. We show how this model succumbs to the polariton "large $N$ problem", that is, the situation whereby the single reacting molecule feels only a tiny $1/N$ part of the collective light-matter interaction intensity.
  arXiv  Detail & Related papers  (2022-11-10T19:22:03Z)
• On parametric resonance in the laser action [91.3755431537592]
  We consider the selfconsistent semiclassical Maxwell--Schr"odinger system for the solid state laser. We introduce the corresponding Poincar'e map $P$ and consider the differential $DP(Y0)$ at suitable stationary state $Y0$.
  arXiv  Detail & Related papers  (2022-08-22T09:43:57Z)
• Spin-zero bound states on the 2D Klein-Gordon equation under uniform magnetic field [0.0]
  We present an interaction modeling for the relativistic spin-0 charged particles moving in a uniform magnetic field. As a functional approach to the nuclear interaction, we consider particle bound states without antiparticle regime. Putting the approximation to spin-zero motion with $V(r)$$neq$$0$ and $S(r)$$=$$0$, one can introduced solvable model in the 2D polar space.
  arXiv  Detail & Related papers  (2022-08-09T13:28:23Z)
• Deep anharmonicity to relativistic spin-0 particles in the spherical regime [0.0]
  We present an approximation of the relativistic spin-0 charges moving in the quantum states with minimum coupling of electromagnetic fields. We find that the potential depth of the charged particle affects the relativistic energy levels where we have found about 200 MeV being for particles and nearly -10 MeV being for anti-particles.
  arXiv  Detail & Related papers  (2022-08-07T11:02:52Z)
• Full counting statistics of interacting lattice gases after an expansion: The role of the condensate depletion in the many-body coherence [55.41644538483948]
  We study the full counting statistics (FCS) of quantum gases in samples of thousands of interacting bosons. FCS reveals the many-body coherence from which we characterize iconic states of interacting lattice bosons.
  arXiv  Detail & Related papers  (2022-07-28T13:21:57Z)
• Effects of disorder on polaritonic and dark states in a cavity using the disordered Tavis-Cummings model [0.0]
  We consider molecules confined to a microcavity whose dimensions are such that an excitation of the molecule is nearly resonant with a cavity mode. We find the conditions for the existence of the polaritonic states, as well as expressions for their energies.
  arXiv  Detail & Related papers  (2022-02-14T11:53:53Z)
• Rapid generation of all-optical $^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance [58.720142291102135]
  We investigate the production of all-optical $39$K Bose-Einstein condensates with different scattering lengths using a Feshbach resonance near $33$ G. We are able to produce fully condensed ensembles with $5.8times104$ atoms within $850$ ms evaporation time at a scattering length of $232. Based on our findings we describe routes towards high-flux sources of ultra-cold potassium for inertial sensing.
  arXiv  Detail & Related papers  (2022-01-12T16:39:32Z)
• Rovibrational structure of the Ytterbium monohydroxide molecule and the $\mathcal{P}$,$\mathcal{T}$-violation searches [68.8204255655161]
  The energy gap between levels of opposite parity, $l$-doubling, is of a great interest. The influence of the bending and stretching modes on the sensitivities to the $mathcalP$,$mathcalT$-violation requires a thorough investigation.
  arXiv  Detail & Related papers  (2021-08-25T20:12:31Z)
• Nuclear spin squeezing by continuous quantum non-demolition measurement: a theoretical study [0.0]
  We take advantage of the weak coupling of ground-state helium-3 nuclear spin to its environment to produce macroscopic quantum states. We perform a quantum non-demolition measurement of a transverse component of the polarized collective nuclear spin. We find a limit $propto(gamma_alpha/Gamma_rm sq)1/2$ on the conditional variance reached in a time.
  arXiv  Detail & Related papers  (2020-12-29T09:56:30Z)
• $\mathcal{P}$,$\mathcal{T}$-odd effects for RaOH molecule in the excited vibrational state [77.34726150561087]
  Triatomic molecule RaOH combines the advantages of laser-coolability and the spectrum with close opposite-parity doublets. We obtain the rovibrational wave functions of RaOH in the ground electronic state and excited vibrational state using the close-coupled equations derived from the adiabatic Hamiltonian.
  arXiv  Detail & Related papers  (2020-12-15T17:08:33Z)
• Anisotropy-mediated reentrant localization [62.997667081978825]
  We consider a 2d dipolar system, $d=2$, with the generalized dipole-dipole interaction $sim r-a$, and the power $a$ controlled experimentally in trapped-ion or Rydberg-atom systems. We show that the spatially homogeneous tilt $beta$ of the dipoles giving rise to the anisotropic dipole exchange leads to the non-trivial reentrant localization beyond the locator expansion.
  arXiv  Detail & Related papers  (2020-01-31T19:00:01Z)

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.