activity
20212026
most citedExact recursive calculation of circulant permanents: A band of different diagonals inside a uniform matrix

7 citations · 12 across the 7 of their papers we have counts for

collaborators

7 papers

quant-ph2026

Quantum-advantage resource of a two-mode Gaussian state: Analytical theory of convex optimization and a Galois no-go for the closed-form solution

Kunwar Kalra, V. V. Kocharovsky

We study the problem of extracting a quantum complexity resource from a mixed Gaussian state of the multimode light. We present the first complete, certificate-checked solution to…

quant-ph2026

Quantum complexity resource in Gaussian boson sampling: Core structure of the semidefinite program

Kunwar Kalra, Vitaly Kocharovsky

We present a rigorous analysis of the algebraic and geometric structure of the quantum complexity resource of a system of bosonic modes in Gaussian boson sampling. This resource un…

quant-ph2026

The quantum-advantage resource in multimode OPA light: Identification, optimization, extraction

Vitaly Kocharovsky, Kunwar Kalra

We introduce the notion and reveal remarkable properties of quantum complexity resource contained in a mixed multimode Gaussian state and providing universal quantitative character…

quant-ph2024

Hybrid boson sampling

V. V. Kocharovsky

We propose boson sampling from a system of coupled photons and Bose-Einstein condensed atoms placed inside a multi-mode cavity as a simulation process testing quantum advantage of…

cond-mat.quant-gas2023

Towards the simplest model of quantum supremacy: Atomic boson sampling in a box trap

V. V. Kocharovsky, Vl. V. Kocharovsky, W. D. Shannon +1

We describe boson sampling of interacting atoms from the noncondensed fraction of Bose-Einstein-condensed (BEC) gas confined in a box trap as a new platform for studying computatio…

physics.plasm-ph2021★ 5 cited

Multi-scale magnetic field structures in an expanding elongated plasma cloud with hot electrons subject to an external magnetic field

Mikhail Garasev, Anton Nechaev, Andrey Stepanov +2

We carry out 3D and 2D PIC-simulations of the expansion of a magnetized plasma that initially uniformly fills a half-space and contains a semi-cylindrical region of heated electron…

cond-mat.stat-mech2021★ 7 cited

Exact recursive calculation of circulant permanents: A band of different diagonals inside a uniform matrix

Vitaly V. Kocharovsky, Vladimir V. Kocharovsky, Vladimir Yu. Martyanov +1

We present a finite-order system of recurrence relations for a permanent of circulant matrices containing a band of k any-value diagonals on top of a uniform matrix (for k = 1, 2,…