Linear cross-entropy certification of quantum computational advantage in Gaussian boson sampling

J Martínez-Cifuentes, H de Guise, N Quesada - PRX Quantum, 2024 - APS
Validation of quantum advantage claims in the context of Gaussian boson sampling (GBS)
currently relies on providing evidence that the experimental samples genuinely follow their …

[HTML][HTML] Hybrid boson sampling

V Kocharovsky - Entropy, 2024 - mdpi.com
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 the …

Boson sampling with self-generation of squeezing via interaction of photons and atoms

SV Tarasov, VV Kocharovsky - arxiv preprint arxiv:2409.09027, 2024 - arxiv.org
We suggest a novel scheme for generating multimode squeezed states for the boson
sampling implementation. The idea is to replace a commonly used linear interferometer by a …

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

VV Kocharovsky, VV Kocharovsky, WD Shannon… - Entropy, 2023 - mdpi.com
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 …

Universal nature of quantum supremacy

V Kocharovsky - Journal of Physics: Conference Series, 2024 - iopscience.iop.org
We disclose the universal nature of computational# P-hardness and quantum supremacy of
quantum many-body systems. We do so by means of the new powerful technique (the …

Two-mode squeezing and entanglement in atomic boson sampling

W Shannon, V Kocharovsky - Journal of Physics: Conference …, 2024 - iopscience.iop.org
Recently, atomic boson sampling of excited atom occupations in an equilibrium interacting
gas with a Bose-Einstein condensate (BEC) has been suggested as a process that could …

Multi-qubit BEC trap for atomic boson sampling

W Shannon, V Kocharovsky - Journal of Physics: Conference …, 2023 - iopscience.iop.org
We suggest a new platform for examination of quantum statistical phenomena in many-body
interacting systems–a multi-qubit Bose-Einstein-condensate (BEC) trap. Ideally, it is suitable …

[PDF][PDF] Squeezing in Bose-Einstein condensate of weakly interacting atoms: non-Gaussian fluctuations of the order parameter and# p-complexity of the joint particle …

S Tarasov, V Kocharovsky - sigmaphi.polito.it
The talk is devoted to new results on the statistics of Bose-Einstein condensate (BEC) in a
weakly interacting gas confined in a mesoscopic trap in an equilibrium state. Detailed …