609 citations · 3.3k across the 23 of their papers we have counts for
23 papers
Subjective nature of path information in quantum mechanics
Xinhe Jiang, Armin Hochrainer, Jaroslav Kysela +4
Common sense suggests that a particle must have a definite origin if its full path information is available. In quantum mechanics, the knowledge of path information is captured thr…
L00L entanglement and the twisted quantum eraser
Dylan Danese, Sabine Wollmann, Saroch Leedumrongwatthanakun +4
We demonstrate the generation of unbalanced two-photon entanglement in the Laguerre-Gaussian (LG) transverse-spatial degree-of-freedom, where one photon carries a fundamental (Gaus…
Quantum interference between distant creation processes
Johannes Pseiner, Manuel Erhard, Mario Krenn
The search for macroscopic quantum phenomena is a fundamental pursuit in quantum mechanics. It allows us to test the limits quantum physics and provides new avenues for exploring t…
A proposal for practical multidimensional quantum networks
Davide Bacco, Jacob F. F. Bulmer, Manuel Erhard +2
A Quantum Internet, i.e., a global interconnection of quantum devices, is the long term goal of quantum communications, and has so far been based on two-dimensional systems (qubits…
Quantum Indistinguishability by Path Identity: The awakening of a sleeping beauty
Armin Hochrainer, Mayukh Lahiri, Manuel Erhard +2
Two photon-pair creation processes can be arranged such that the paths of the emitted photons are identical. Thereby the path information is not erased but is never born in the fir…
Quantum teleportation of physical qubits into logical code-spaces
Yi-Han Luo, Ming-Cheng Chen, Manuel Erhard +13
Quantum error correction is an essential tool for reliably performing tasks for processing quantum information on a large scale. However, integration into quantum circuits to achie…
Super-Sensitive Quantum Metrology with Separable States
Mayukh Lahiri, Manuel Erhard
We introduce a super-sensitive phase measurement technique that yields the Heisenberg limit without using either a squeezed state or a many-particle entangled state. Instead, we us…
Computer-inspired Quantum Experiments
Mario Krenn, Manuel Erhard, Anton Zeilinger
The design of new devices and experiments in science and engineering has historically relied on the intuitions of human experts. This credo, however, has changed. In many disciplin…
Advances in High Dimensional Quantum Entanglement
Manuel Erhard, Mario Krenn, Anton Zeilinger
Since its discovery in the last century, quantum entanglement has challenged some of our most cherished classical views, such as locality and reality. Today, the second quantum rev…
Quantum Optical Experiments Modeled by Long Short-Term Memory
Thomas Adler, Manuel Erhard, Mario Krenn +3
We demonstrate how machine learning is able to model experiments in quantum physics. Quantum entanglement is a cornerstone for upcoming quantum technologies such as quantum computa…
Computer-inspired concept for high-dimensional multipartite quantum gates
Xiaoqin Gao, Manuel Erhard, Anton Zeilinger +1
An open question in quantum optics is how to manipulate and control complex quantum states in an experimentally feasible way. Here we present concepts for transformations of high-d…
Quantum teleportation in high dimensions
Yi-Han Luo, Han-Sen Zhong, Manuel Erhard +9
Precise measurement or perfect cloning of unknown quantum states is forbidden by the laws of quantum mechanics. Yet, quantum teleportation in principle allows for a faithful and di…
Experimental High-Dimensional Entanglement by Path Identity
Jaroslav Kysela, Manuel Erhard, Armin Hochrainer +2
Versatile and high-brightness sources of high-dimensional entangled photon pairs are important for emerging quantum technologies such as secure quantum communication. Here, we expe…
Quantum Experiments and Graphs II: Quantum Interference, Computation and State Generation
Xuemei Gu, Manuel Erhard, Anton Zeilinger +1
We present a conceptually new approach to describe state-of-the-art photonic quantum experiments using Graph Theory. There, the quantum states are given by the coherent superpositi…
Gouy Phase Radial Mode Sorter for Light: Concepts and Experiments
Xuemei Gu, Mario Krenn, Manuel Erhard +1
We present an in principle lossless sorter for radial modes of light, using accumulated Gouy phases. The experimental setups have been found by a computer algorithm, and can be int…
Twisted Photons: New Quantum Perspectives in High Dimensions
Manuel Erhard, Robert Fickler, Mario Krenn +1
Quantum information science and quantum information technology have seen a virtual explosion world-wide. It is all based on the observation that fundamental quantum phenomena on th…
Experimental GHZ Entanglement beyond Qubits
Manuel Erhard, Mehul Malik, Mario Krenn +1
The Greenberger-Horne-Zeilinger (GHZ) argument provides an all-or-nothing contradiction between quantum mechanics and local-realistic theories. In its original formulation, GHZ inv…
Generation of the Complete Four-dimensional Bell Basis
Feiran Wang, Manuel Erhard, Amin Babazadeh +3
The Bell basis is a distinctive set of maximally entangled two-particle quantum states that forms the foundation for many quantum protocols such as teleportation, dense coding and…
High-Dimensional Single-Photon Quantum Gates: Concepts and Experiments
Amin Babazadeh, Manuel Erhard, Feiran Wang +4
Transformations on quantum states form a basic building block of every quantum information system. From photonic polarization to two-level atoms, complete sets of quantum gates for…
Orbital angular momentum of photons and the entanglement of Laguerre-Gaussian modes
Mario Krenn, Mehul Malik, Manuel Erhard +1
The identification of orbital angular momentum (OAM) as a fundamental property of a beam of light nearly twenty-five years ago has led to an extensive body of research around this…
A quantum router for high-dimensional entanglement
Manuel Erhard, Mehul Malik, Anton Zeilinger
In addition to being a workhorse for modern quantum technologies, entanglement plays a key role in fundamental tests of quantum mechanics. The entanglement of photons in multiple l…
Multi-photon entanglement in high dimensions
Mehul Malik, Manuel Erhard, Marcus Huber +3
Entanglement lies at the heart of quantum mechanics as a fundamental tool for testing its deep rift with classical physics, while also providing a key resource for quantum tech…
Real-time imaging of spin-to-orbital angular momentum quantum state teleportation
Manuel Erhard, Hammam Qassim, Harjaspreet Mand +2
Quantum teleportation is a process in which an unknown quantum state is transferred between two spatially separated subspaces of a bipartite quantum system which share an entangled…