Simultaneous Quantum Squeezing of Light Polarizations and Atomic Spins
in a Cold Atomic Gas
- URL: http://arxiv.org/abs/2303.08547v1
- Date: Wed, 15 Mar 2023 12:02:27 GMT
- Title: Simultaneous Quantum Squeezing of Light Polarizations and Atomic Spins
in a Cold Atomic Gas
- Authors: Jinzhong Zhu, Yue Mu and Guoxiang Huang
- Abstract summary: We present a scheme to realize simultaneous quantum squeezing of light polarizations and atomic spins via a double electromagnetically induced transparency (DEIT)
We derive two coupled quantum nonlinear Schr"odinger equations from Maxwell-Heisenberg-Langevin equations describing the quantum dynamics of the atoms and the probe pulse.
The results of the simultaneous squeezing of light polarizations and atomic spins by using only a coherent probe pulse reported here opens a route for uncovering the unique property of the quantum interface between light and atomic ensembles.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We present a scheme to realize simultaneous quantum squeezing of light
polarizations and atomic spins via a perturbed double electromagnetically
induced transparency (DEIT) in a cold four-level atomic ensemble coupled with a
probe laser pulse of two polarization components. We derive two coupled quantum
nonlinear Schr\"odinger equations from Maxwell-Heisenberg-Langevin equations
describing the quantum dynamics of the atoms and the probe pulse, and develop a
quantum theory of vector optical soliton (VOS), which have ultraslow
propagation velocity and extremely low generation power. We solve the
non-Hermitian eigenvalue problem describing the quantum fluctuations on the
background of the VOS, and rigorously prove that all fluctuation eigenmodes
(including continuous modes and four zero modes) obtained constitute a
bi-orthonormal and complete set. We find that, due to the giant self- and
cross-Kerr nonlinearities contributed by the perturbed DEIT, a large
polarization squeezing of the probe pulse can be realized. We also find that,
together with the polarization squeezing of the probe pulses, a significant
squeezing of atomic spins also occurs simultaneously. The results of the
simultaneous squeezing of light polarizations and atomic spins by using only a
coherent probe pulse reported here opens a route for uncovering the unique
property of the quantum interface between light and atomic ensembles, and also
for applications in quantum information and precision measurement.
Related papers
- Coherent control of orbital wavefunctions in the quantum spin liquid
$Tb_{2}Ti_{2}O_{7}$ [0.0]
We show coherent control of orbital wavefunctions in pyrochlore $Tb_2Ti_2O_7$.
We show that resonant excitation with a strong THz pulse creates a coherent superposition of the lowest energy Tb 4f states.
arXiv Detail & Related papers (2023-09-22T09:53:13Z) - Engineering quantum control with twisted-light fields induced optical
transitions [0.0]
A novel form of quantum control is proposed by applying twisted-light also known as optical vortex beams.
This method introduces spatially tailored electric and magnetic fields to rewrite atomic selection rules.
Engineering light-matter interaction by optical vortices will benefit to experimental atomic and molecular platforms.
arXiv Detail & Related papers (2023-06-30T12:51:23Z) - Trapped-Ion Quantum Simulation of Collective Neutrino Oscillations [55.41644538483948]
We study strategies to simulate the coherent collective oscillations of a system of N neutrinos in the two-flavor approximation using quantum computation.
We find that the gate complexity using second order Trotter- Suzuki formulae scales better with system size than with other decomposition methods such as Quantum Signal Processing.
arXiv Detail & Related papers (2022-07-07T09:39:40Z) - Quantum Squeezing of Slow-Light Dark Solitons via Electromagnetically
Induced Transparency [0.0]
We consider the quantum effect of slow light dark soliton (SLDS) in a cold atomic gas with defocuing Kerr nonlinearity via electromagnetically induced transparency (EIT)
We calculate the quantum fluctuations of the SLDS by solving the relevant non-Hermitian eigenvalue problem describing the quantum fluctuations.
We demonstrate that, due to the large Kerr nonlinearity contributed from the EIT effect, a significant quantum squeezing of the SLDS can be realized.
arXiv Detail & Related papers (2022-02-21T05:33:48Z) - Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear
qudit with an electronic ancilla [50.002949299918136]
We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising system suitable to implement quantum computation algorithms.
It embeds an electronic spin 1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both characterized by remarkable coherence.
arXiv Detail & Related papers (2021-03-15T21:38:41Z) - Waveguide quantum electrodynamics: collective radiance and photon-photon
correlations [151.77380156599398]
Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters.
We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
arXiv Detail & Related papers (2021-03-11T17:49:52Z) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - Quantum Zeno effect under continuous spin noise measurement in a quantum
dot-micropillar cavity [0.0]
We describe the quantum Zeno effect in a spin-photon interface represented by a charged quantum dot in a micropillar cavity.
We obtain a microscopic expression for the spin measurement rate and calculate the second and fourth order correlation functions of the spin noise.
We demonstrate, that the quantum limit for the spin measurement can be reached for any probe frequency using the homodyne nondemolition spin measurement.
arXiv Detail & Related papers (2020-08-14T16:07:05Z) - General quantum-mechanical solution for twisted electrons in a uniform
magnetic field [68.8204255655161]
A theory of twisted (and other structured) paraxial electrons in a uniform magnetic field is developed.
The observable effect of a different behavior of relativistic Laguerre-Gauss beams with opposite directions of the orbital angular momentum penetrating from the free space into a magnetic field is predicted.
arXiv Detail & Related papers (2020-05-13T16:35:10Z) - Theory of waveguide-QED with moving emitters [68.8204255655161]
We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace.
We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
arXiv Detail & Related papers (2020-03-20T12:14:10Z)
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.