Tootfinder

This https://arxiv.org/abs/2312.13921 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csIT_…

Hulls of projective Reed-Muller codes over the projective plane
By solving a problem regarding polynomials in a quotient ring, we obtain the relative hull and the Hermitian hull of projective Reed-Muller codes over the projective plane. The dimension of the hull determines the minimum number of maximally entangled pairs required for the corresponding entanglement-assisted quantum error-correcting code. Hence, by computing the dimension of the hull we now have all the parameters of the symmetric and asymmetric entanglement-assisted quantum error-correcting c…

#LB A comunidade acadêmica deveria valorizar mais as participações femininas na história da matemštica. Eu obviamente jš conhecia os aneis noetherianos, mas eu só descobri que Noether era uma mulher muitos anos depois.
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This https://arxiv.org/abs/2402.12972 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

The kinematics of multiple Compton scattering of two-photon systems
We present a Stokes-Mueller method to calculate the cross sections associated with multiple Compton scattering of an arbitrary two-photon system. This method is used to calculate the cross section in the scenario in which one of the maximally entangled annihilation photons undergoes intermediate Compton scattering followed by the detection of both photons using a pair of Compton polarimeters. The method accounts for potential quantum-decoherence effects caused by Compton scattering. Despite bei…

Coherent Acoustic Control of Defect Orbital States in the Strong-Driving Limit
B. A. McCullian, V. Sharma, H. Y. Chen, J. C. Crossman, E. J. Mueller, G. D. Fuchs
https://arxiv.org/abs/2403.10989

Coherent Acoustic Control of Defect Orbital States in the Strong-Driving Limit
We use a bulk acoustic wave resonator to demonstrate coherent control of the excited orbital states in a diamond nitrogen-vacancy (NV) center at cryogenic temperature. Coherent quantum control is an essential tool for understanding and mitigating decoherence. Moreover, characterizing and controlling orbital states is a central challenge for quantum networking, where optical coherence is tied to orbital coherence. We study resonant multi-phonon orbital Rabi oscillations in both the frequency and…

Two-axis twisting using Floquet-engineered XYZ spin models with polar molecules
Calder Miller, Annette N. Carroll, Junyu Lin, Henrik Hirzler, Haoyang Gao, Hengyun Zhou, Mikhail D. Lukin, Jun Ye
https://arxiv.org/abs/2404.18913

Two-axis twisting using Floquet-engineered XYZ spin models with polar molecules
Polar molecules confined in an optical lattice are a versatile platform to explore spin-motion dynamics based on strong, long-range dipolar interactions. The precise tunability of Ising and spin-exchange interactions with both microwave and dc electric fields makes the molecular system particularly suitable for engineering complex many-body dynamics. Here, we used Floquet engineering to realize interesting quantum many-body systems of polar molecules. Using a spin encoded in the two lowest rota…

Quantum radiation reaction: Analytical approximations and obtaining the spectrum from moments
Greger Torgrimsson
https://arxiv.org/abs/2404.04152 https://<…

Quantum radiation reaction: Analytical approximations and obtaining the spectrum from moments
We derive analytical $χ\ll1$ approximations for spin-dependent quantum radiation reaction for locally constant and locally monochromatic fields. We show how to factor out fast spin oscillations and obtain the degree of polarization in the plane orthogonal to the magnetic field from the Frobenius norm of the Mueller matrix. We show that spin effects lead to a transseries in $χ$, with powers $χ^k$, logarithms $(\lnχ)^k$ and oscillating terms, $\cos(\dots/χ)$ and $\sin(\dots/χ)$. In our appr…

Raman scattering by carbon nanotubes coupled to quantum dots via dipolar excitonic interaction
Anna Wroblewska, Niclas S. Mueller, Mariusz Zdrojek, Stephanie Reich, Georgy Gordeev
https://arxiv.org/abs/2404.05450

Raman scattering by carbon nanotubes coupled to quantum dots via dipolar excitonic interaction
The dipole-dipole interactions between excitons are of paramount importance in the nanoscale structures. When two excitons are placed together they can exchange the energy can manifest in the resonant Raman cross sections. We provide theoretical framework for such effects by combining the coupled oscillator model and perturbation theory. We apply this theory to a hybrid film comprising semiconducting quantum dots and metallic carbon nanotubes. The quantum dots exciton has a fixed energy, while …

Quantum tomography of molecules using ultrafast electron diffraction
Jiayang Jiang, Ming Zhang, Aosheng Gu, R. J. Dwayne Miller, Zheng Li
https://arxiv.org/abs/2403.05320

Quantum tomography of molecules using ultrafast electron diffraction
We propose a quantum tomography (QT) approach to retrieve the temporally evolving reduced density matrix in elecotronic state basis, where the populations and coherence between ground state and excited state are reconstructed from the ultrafast electron diffraction signal. In order to showcase the capability of the proposed QT approach, we simulate the nuclear wavepacket dynamics and ultrafast electron diffraction of photoexcited pyrrole molecules using ab initio quantum chemical CASSCF method.…

Dynamics of spin helices in the diluted one-dimensional $XX$ model
Darren Pereira, Erich J. Mueller
https://arxiv.org/abs/2404.17558 https://

Dynamics of spin helices in the diluted one-dimensional $XX$ model
Motivated by discrepancies between recent cold atom experiments and the associated theory, we explore the effect of immobile holes on the quantum dynamics of $x$-$z$ spin helices in the one-dimensional $XX$ model. We calculate the exact spin dynamics by mapping onto a system of non-interacting fermions, averaging over the distribution of holes. At small hole densities we find that the helical spin pattern decays exponentially, with a pitch dependence that agrees with the experiments. At large h…