Quantum state tomography of molecules by ultrafast diffraction
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-25770-6
Abstract: Ultrafast electron diffraction and time-resolved serial crystallography are the basis of the ongoing revolution in capturing at the atomic level of detail the structural dynamics of molecules. However, most experiments capture only the probability density… read more here.
Keywords: diffraction; quantum; state tomography; quantum state ... See more keywords
Quantum state tomography across the exceptional point in a single dissipative qubit
Sign Up to like & getrecommendations! Published in 2019 at "Nature Physics"
DOI: 10.1038/s41567-019-0652-z
Abstract: Open systems with gain and loss, described by non-trace-preserving, non-Hermitian Hamiltonians, have been a subject of intense research recently. The effect of exceptional-point degeneracies on the dynamics of classical systems has been observed through remarkable… read more here.
Keywords: point; exceptional point; state tomography; quantum state ... See more keywords
Bidirectional Information Flow Quantum State Tomography
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/38/4/040303
Abstract: The exact reconstruction of many-body quantum systems is one of the major challenges in modern physics, because it is impractical to overcome the exponential complexity problem brought by high-dimensional quantum many-body systems. Recently, machine learning… read more here.
Keywords: quantum state; physics; state tomography; quantum ... See more keywords
Linking entanglement detection and state tomography via quantum 2-designs
Sign Up to like & getrecommendations! Published in 2019 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aaf8cf
Abstract: We present an experimentally feasible and efficient method for detecting entangled states with measurements that extend naturally to a tomographically complete set. Our detection criterion is based on measurements from subsets of a quantum 2-design,… read more here.
Keywords: quantum; linking entanglement; detection; state tomography ... See more keywords
Efficient Bayesian credible-region certification for quantum-state tomography
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.012345
Abstract: Standard Bayesian credible-region theory for constructing an error region on the unique estimator of an unknown state in general quantum-state tomography to calculate its size and credibility relies on heavy Monte~Carlo sampling of the state… read more here.
Keywords: quantum state; region; state tomography; bayesian credible ... See more keywords
Neural-network quantum state tomography in a two-qubit experiment
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.042604
Abstract: We study the performance of efficient quantum state tomography methods based on neural network quantum states using measured data from a two-photon experiment. Machine learning inspired variational methods provide a promising route towards scalable state… read more here.
Keywords: state; quantum; state tomography; quantum state ... See more keywords
Implementing positive-operator-valued-measurement elements in photonic circuits for performing minimum quantum state tomography of path qudits
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.062324
Abstract: Manipulation of qudits in optical tables is a difficult and nonscalable task. The use of integrated optical circuits opens new possibilities for the generation, manipulation, and characterization of high dimensional states besides the ease of… read more here.
Keywords: quantum state; tomography; minimum quantum; state tomography ... See more keywords
Quantum State Tomography with Conditional Generative Adversarial Networks
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.140502
Abstract: Quantum state tomography (QST) is a challenging task in intermediate-scale quantum devices. Here, we apply conditional generative adversarial networks (CGANs) to QST. In the CGAN framework, two dueling neural networks, a generator and a discriminator,… read more here.
Keywords: quantum state; generative adversarial; conditional generative; state tomography ... See more keywords
Direct Parameter Estimations from Machine Learning-Enhanced Quantum State Tomography
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14050874
Abstract: With the power to find the best fit to arbitrarily complicated symmetry, machine-learning (ML)-enhanced quantum state tomography (QST) has demonstrated its advantages in extracting complete information about the quantum states. Instead of using the reconstruction… read more here.
Keywords: state; quantum state; learning enhanced; enhanced quantum ... See more keywords
Local Stochastic Factored Gradient Descent for Distributed Quantum State Tomography
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Control Systems Letters"
DOI: 10.48550/arxiv.2203.11579
Abstract: We propose a distributed Quantum State Tomography (QST) protocol, named Local Stochastic Factored Gradient Descent (Local SFGD), to learn the low-rank factor of a density matrix over a set of local machines. QST is the… read more here.
Keywords: state; quantum state; stochastic factored; local stochastic ... See more keywords