A5048339883- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Black Holes and Theoretical Physics
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Quantum many-body systems
- Noncommutative and Quantum Gravity Theories
- Quantum Information and Cryptography
- Quantum Computing Algorithms and Architecture
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Muon and positron interactions and applications
- Nuclear Physics and Applications
- Physics of Superconductivity and Magnetism
- Radiation Detection and Scintillator Technologies
- Robotic Path Planning Algorithms
- Astrophysics and Cosmic Phenomena
- Sensor Technology and Measurement Systems
- Calibration and Measurement Techniques
- Tensor decomposition and applications
- Parallel Computing and Optimization Techniques
- Advanced NMR Techniques and Applications
California Institute of Technology
2021-2025
Freie Universität Berlin
2017-2023
Max Planck Institute for Physics
1989-2022
Dongseo University
2018
Schmalkalden University of Applied Sciences
2014-2017
Universidade Federal de Minas Gerais
2016
Seoul National University
2014
Folkwang University of the Arts
1992
University of Siegen
1992
Max Planck Innovation
1990-1991
Abstract The emergence of a local effective theory from more fundamental quantum gravity with seemingly fewer degrees freedom is major puzzle theoretical physics. A recent approach to this problem consider general features the Hilbert space maps relating these theories. In work, we construct approximately observables, or overlapping qubits, such non-isometric maps. We show that processes in theories can be spoofed system freedom, deviations actual locality identifiable as gravity. For...
We study the entanglement of purification (EOP), a measure total correlation between two subsystems $A$ and $B$, for free scalar field theory on lattice transverse-field Ising model by numerical methods. In both these models, we find that EOP becomes nonmonotonic function distance $B$ when number sites is small. When it large, monotonic shows plateaulike behavior. Moreover, also show original reflection symmetry which exchanges can get broken in optimally purified systems. provide an...
The authors study quantum information-theoretic quantities in Gaussian mixed states, identifying universal properties and providing a comparison with existing results from conformal field theory holography.
We explore tensor network models of holography through an efficiently contractible framework matchgate tensors.
The study of critical quantum many-body systems through conformal field theory (CFT) is one the pillars modern physics. Certain CFTs are also understood to be dual higher-dimensional theories gravity via anti-de Sitter/conformal (AdS/CFT) correspondence. To reproduce various features AdS/CFT, a large number discrete models based on tensor networks have been proposed. Some recent models, most notably including toy holographic error correction, constructed regular time-slice discretizations...
This paper shows how a class of Hyperbolic tensor network models is described by Majorana dimers, nonlocal fermionic modes whose entanglement structure directly determines physical correlations the underlying interacting system. These are also shown to realize an effective bit thread model, thus relating different approaches holography in single framework.
Quantifying entanglement properties of mixed states in quantum field theory via purification and reflected entropy is a new challenging subject. In this work, we study both quantities for two spherical subregions far away from each other the vacuum conformal any number dimensions. Using lattice techniques, find an elementary proof that decay enhanced with respect to mutual information behavior by logarithm distance between subregions. case Ising spin chain at criticality related free fermion...
Central to the AdS/CFT correspondence is a precise relationship between curvature of an anti--de Sitter (AdS) space-time and central charge dual conformal field theory (CFT) on its boundary. Our work shows that such can also be established for tensor network models based regular bulk geometries, leading analytical form maximal charges exhibited by boundary states. We identify class tensors Majorana dimer states saturate these bounds in large limit, while realizing perfect block-perfect...
We exploit insights into the geometry of bosonic and fermionic Gaussian states to develop an efficient local optimization algorithm extremize arbitrary functions on these families states. The method is based notions gradient descent attuned which also allows for implementation constraints. natural group action symplectic orthogonal enables us compute geometric efficiently. While our parametrization covariance matrices linear complex structures, we provide compact formulas easily convert from...
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-dimensional bulk geometry is associated with code's logical degrees freedom. Previous discrete holographic based on tensor networks have reproduced general code properties expected from continuum AdS/CFT, complementary recovery. However, boundary states typically do not exhibit correlation functions CFT states. In this...
In this work, multiple robots circulate around the boundary of a desired region in order to create virtual fence. The aim fence is avoid internal or external agents crossing through delimited area. paper, we propose distributed technique that allows team plan deformation shape escort safe from one place goal. Our proposal composed two parts. First, present planning method for dynamic boundary. We model resulting as twice differentiable function. Second, use obtained function guide robot...
A bstract Key aspects of the AdS/CFT correspondence can be captured in terms tensor network models on hyperbolic lattices. For tensors fulfilling matchgate constraint, these have previously been shown to produce disordered boundary states whose site-averaged ground state properties match translation-invariant critical Ising model. In this work, we substantially sharpen relationship by deriving local Hamiltonians generalizing model and low-energy excited are accurately represented ansatz...
Anti-inflammatory effect of advanced adipose stem cell derived protein extract (AAPE) could be improved by minimising degradation.To develop a proliposomal formulation AAPE for the treatment topical atopic dermatitis.Proliposomal powder was manufactured evaporating solution soy phosphatidyl choline, and Poloxamer 407 in ethanol under vacuum on sorbitol powder. Characterisation proliposomes (zeta potential, diameter, stability flowability) as well vivo efficacy dermatitis mouse model...
Understanding quantum entanglement in interacting higher-dimensional conformal field theories is a challenging task, as direct analytical calculations are often impossible to perform. With holographic entropy, of entropy turn into problem finding extremal surfaces curved spacetime, which we tackle with numerical finite-element approach. In this paper, compute the between two half-spaces resulting from local quench, triggered by operator insertion CFT$_3$. We find that growth at early time...
Measuring the level of liquid in a container plays an important role various process industries. This paper introduces design and implementation novel approach using itself to determine with just one piezoelectric transmitter, receiver interfacing microcontroller. The system was successfully tested evaluated different tanks shows simple, efficient, low cost, non-destructive non-intrusive sensor monitor continuously fluid levels. measurement results are analyzed discussed.
We introduce a new class of qubit codes that we call Evenbly codes, building on previous proposal hyperinvariant tensor networks. Its network description consists local, non-perfect tensors describing CSS interspersed with Hadamard gates, placed hyperbolic $\{p,q\}$ geometry even $q\geq 4$, yielding an infinitely large subsystem codes. construct example for $\{5,4\}$ manifold and describe strategies logical gauge fixing lead to different rates $k/n$ distances $d$, which calculate...
Several recent techniques for modifying topological codes with single-qubit Clifford operators have shown high resilience against pure Pauli noise. Paramount to these findings has been the demonstration that several variants exhibit error thresholds often attaining or exceeding zero-rate hashing bound, a known benchmark code-capacity noise channels, biased Additionally, direct comparison bound outperform at points of finite biases. Motivated by observations, we study holographic quantum...
Discrete models of holographic dualities, typically modeled by tensor networks on hyperbolic tilings, produce quantum states with a characteristic quasiperiodic disorder not present in continuum holography. In this work, we study the behavior XXZ spin chains such symmetries, showing that lessons learned from previous non-interacting (matchgate) generalize to more generic Hamiltonians under disorder: While breaks translation invariance, site-averaged correlations and entanglement...
Quantum error correction (QEC) is a crucial prerequisite for future large-scale quantum computation. Finding and analyzing new QEC codes, along with efficient decoding fault-tolerance protocols, central to this effort. Holographic codes are recent class of subsystem derived from holographic bulk/boundary dualities. In addition exploring the physics such dualities, these possess useful properties as tunable encoding rates, distance scaling competitive topological excellent recovery...
This paper describes the combination of artificial, circulating vector fields based on implicit curves as proposed in Gonçalves et al. (2010) with a sampling navigation technique same spirit VFRRT (vector field rapidly exploring random tree) from Ko (2014). The resulting two stage strategy outputs feasible paths considering Dubins airplane model Owen (2015), that avoids known static obstacles three dimensional space. In simulations algorithm outperforms pure approach.
The readout system for the Aleph central tracking detector, a large time projection chamber (TPC), consists of more than 100 FASTBUS crates with approximately 1000 modules. detector and its associated electronics are briefly presented, followed by detailed description control system. discussion covers sector readout, calibration, front-end data acquisition, pipelining, service request handling. Experiences discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...