105 citations · 376 across the 13 of their papers we have counts for
14 papers
Critical spin models from holographic disorder
Dimitris Saraidaris, Alexander Jahn
Discrete models of holographic dualities, typically modeled by tensor networks on hyperbolic tilings, produce quantum states with a characteristic quasiperiodic disorder not presen…
Holographic Codes from Hyperinvariant Tensor Networks
Matthew Steinberg, Sebastian Feld, Alexander Jahn
Holographic quantum-error correcting codes are models of bulk/boundary dualities such as the anti-de Sitter/conformal field theory (AdS/CFT) correspondence, where a higher-dimensio…
Overlapping qubits from non-isometric maps and de Sitter tensor networks
ChunJun Cao, Wissam Chemissany, Alexander Jahn +1
We construct approximately local observables, or "overlapping qubits", using non-isometric maps and show that processes in local effective theories can be spoofed with a quantum sy…
Boundary theories of critical matchgate tensor networks
Alexander Jahn, Marek Gluza, Charlotte Verhoeven +2
Key aspects of the AdS/CFT correspondence can be captured in terms of tensor network models on hyperbolic lattices. For tensors fulfilling the matchgate constraint, these have prev…
Holographic tensor network models and quantum error correction: A topical review
Alexander Jahn, Jens Eisert
Recent progress in studies of holographic dualities, originally motivated by insights from string theory, has led to a confluence with concepts and techniques from quantum informat…
Long-distance entanglement of purification and reflected entropy in conformal field theory
Hugo A. Camargo, Lucas Hackl, Michal P. Heller +2
Quantifying entanglement properties of mixed states in quantum field theory via entanglement of purification and reflected entropy is a new and challenging subject. In this work, w…
Local optimization on pure Gaussian state manifolds
Bennet Windt, Alexander Jahn, Jens Eisert +1
We exploit insights into the geometry of bosonic and fermionic Gaussian states to develop an efficient local optimization algorithm to extremize arbitrary functions on these famili…
Entanglement and Complexity of Purification in (1+1)-dimensional free Conformal Field Theories
Hugo A. Camargo, Lucas Hackl, Michal P. Heller +3
Finding pure states in an enlarged Hilbert space that encode the mixed state of a quantum field theory as a partial trace is necessarily a challenging task. Nevertheless, such puri…
Tensor network models of AdS/qCFT
Alexander Jahn, Zoltán Zimborás, Jens Eisert
The study of critical quantum many-body systems through conformal field theory (CFT) is one of the pillars of modern quantum physics. Certain CFTs are also understood to be dual to…
Central charges of aperiodic holographic tensor network models
Alexander Jahn, Zoltán Zimborás, Jens Eisert
Central to the AdS/CFT correspondence is a precise relationship between the curvature of an anti-de Sitter (AdS) spacetime and the central charge of the dual conformal field theory…
Majorana dimers and holographic quantum error-correcting codes
Alexander Jahn, Marek Gluza, Fernando Pastawski +1
Holographic quantum error-correcting codes have been proposed as toy models that describe key aspects of the AdS/CFT correspondence. In this work, we introduce a versatile framewor…
Entanglement of Purification in Many Body Systems and Symmetry Breaking
Arpan Bhattacharyya, Alexander Jahn, Tadashi Takayanagi +1
We study the entanglement of purification (EoP), a measure of total correlation between two subsystems and , for free scalar field theory on a lattice and the transverse-fie…
Holography and criticality in matchgate tensor networks
Alexander Jahn, Marek Gluza, Fernando Pastawski +1
The AdS/CFT correspondence conjectures a holographic duality between gravity in a bulk space and a critical quantum field theory on its boundary. Tensor networks have come to provi…
Holographic Entanglement Entropy of Local Quenches in AdS/CFT: A Finite-Element Approach
Alexander Jahn, Tadashi Takayanagi
Understanding quantum entanglement in interacting higher-dimensional conformal field theories is a challenging task, as direct analytical calculations are often impossible to perfo…