Abstract Identifying which candidate sites on a solid-state sample are single-photon emitters requires a Hanbury Brown–Twiss (HBT) measurement of the second-order correlation function g(2)(τ), which is slow because photon coincidences accumulate at a rate proportional to the square of the detected count rate. We examin...
Tanvir M. Mahim, Md Nahin Islam, M. Mosaddequr Rahman et al.· ACS Photonics· 0 citations
Code and circuit-level results for the article "Device-physics design rules for wide-temperature enhancement-mode gallium nitride integrated circuits, revealed by transistor-anchored machine learning" (T. M. Mahim, M. M. Rahman, N. Chowdhury; submitted). The probe circuit is a monolithic e-mode GaN-on-SOI fractional-N...
Tanvir M. Mahim, Md. Mosaddequr Rahman, Nadim Chowdhury· Zenodo (CERN European Organi...· 0 citations
Overlapping peaks, pixels without a peak, gaps in smoothed maps, and calibration uncertainty for any number of modes. Added fit_two_modes(..., joint=True) and fit_map(..., joint=True): the two peaks are fitted together (two Lorentzians on one shared constant or linear baseline) over the range spanned by both windows, s...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
Measured-data release: less biased tomography fits, error bars that hold for non-Gaussian detection noise, an exact Voigt width, moments of the trajectory solver at the requested times, and input checks where bad inputs used to give silent nan or unphysical numbers. Added estimate_squeezing(..., shot_noise="empirical")...
Tanvir M. Mahim, M. Mosaddequr Rahman, Abu S. M. Mohsin· Zenodo (CERN European Organi...· 0 citations
Fixed Model.jacobian (used by information, design and fit) took its finite-difference step as 1e-6 * max(|theta|, 1e-3). For a parameter smaller than 1e-3 in its own units the step, 1e-9, was too coarse; for a time constant of 1e-9 s it was the size of the parameter itself. The planned error bars then depended on the u...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
Fixed Model.jacobian (used by information, design and fit) took its finite-difference step as 1e-6 * max(|theta|, 1e-3). For a parameter smaller than 1e-3 in its own units the step, 1e-9, was too coarse; for a time constant of 1e-9 s it was the size of the parameter itself. The planned error bars then depended on the u...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
0.2.0 reported that, with a delta-sigma divider, the edge-level loop shows in-band noise that the exact linear sampled-data model misses, even with perfectly matched pumps, and that its mechanism was not identified. 0.3.0 identifies it, computes it and tests it. The mechanism A PFD/charge-pump pulse is a rectangle of c...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
First release: the charge-pump fractional-N loop, noise, delta-sigma, tuning-curve, lock and measurement-planning machinery distilled from a monolithic GaN-on-SOI HEMT-varactor PLL co-design study, generalized to any technology that fits a charge-pump loop -- CMOS, SiGe, GaN or board-level. The physics-informed-ML and...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
First release: the charge-pump fractional-N loop, noise, delta-sigma, tuning-curve, lock and measurement-planning machinery distilled from a monolithic GaN-on-SOI HEMT-varactor PLL co-design study, generalized to any technology that fits a charge-pump loop -- CMOS, SiGe, GaN or board-level. The physics-informed-ML and...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
Experimental-conditions release: the two knobs every measurement actually has -- a temperature and lab units -- plus an honest convergence report. Added Finite-temperature subband filling. fill_subbands_thermal implements the closed form n_i = dos_i kT ln(1 + exp((E_i - E_F)/kT)) for 2D parabolic hole subbands, and tem...
Tanvir M. Mahim· Zenodo (CERN European Organi...· 0 citations
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