Search Results for author: Anton Frisk Kockum

Found 5 papers, 3 papers with code

Gradient-descent quantum process tomography by learning Kraus operators

no code implementations1 Aug 2022 Shahnawaz Ahmed, Fernando Quijandría, Anton Frisk Kockum

The GD-QPT matches the performance of both compressed-sensing (CS) and projected least-squares (PLS) QPT in benchmarks with two-qubit random processes, but shines by combining the best features of these two methods.

Ultimate quantum limit for amplification: a single atom in front of a mirror

no code implementations17 Dec 2020 Emely Wiegand, Ping-Yi Wen, Per Delsing, Io-Chun Hoi, Anton Frisk Kockum

We investigate three types of amplification processes for light fields coupling to an atom near the end of a one-dimensional semi-infinite waveguide.

Quantum Physics

Classification and reconstruction of optical quantum states with deep neural networks

1 code implementation3 Dec 2020 Shahnawaz Ahmed, Carlos Sánchez Muñoz, Franco Nori, Anton Frisk Kockum

For pure states with additive or convolutional Gaussian noise, the QST-CGAN is able to adapt to the noise and reconstruct the underlying state.

General Classification Quantum State Tomography

Quantum State Tomography with Conditional Generative Adversarial Networks

1 code implementation7 Aug 2020 Shahnawaz Ahmed, Carlos Sánchez Muñoz, Franco Nori, Anton Frisk Kockum

We augment a CGAN with custom neural-network layers that enable conversion of output from any standard neural network into a physical density matrix.

Quantum State Tomography

Deep Q-learning decoder for depolarizing noise on the toric code

1 code implementation30 Dec 2019 David Fitzek, Mattias Eliasson, Anton Frisk Kockum, Mats Granath

We present an AI-based decoding agent for quantum error correction of depolarizing noise on the toric code.

Quantum Physics Disordered Systems and Neural Networks

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