1.5k citations · 2.2k across the 15 of their papers we have counts for
15 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…
Quantum state tomography of undetected photons
Jorge Fuenzalida, Jaroslav Kysela, Krishna Dovzhik +4
The measurement of quantum states is one of the most important problems in quantum mechanics. We introduce a quantum state tomography technique in which the state of a qubit is rec…
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…
Resolution of Quantum Imaging with Undetected Photons
Jorge Fuenzalida, Armin Hochrainer, Gabriela Barreto Lemos +4
Quantum imaging with undetected photons is a recently introduced technique that goes significantly beyond what was previously possible. In this technique, images are formed without…
Characterizing mixed state entanglement through single-photon interference
Mayukh Lahiri, Radek Lapkiewicz, Armin Hochrainer +2
Entanglement verification and measurement is essential for experimental tests of quantum mechanics and also for quantum communication and information science. Standard methods of v…
One-photon measurement of two-photon entanglement
Gabriela Barreto Lemos, Radek Lapkiewicz, Armin Hochrainer +2
Entanglement is a fundamental feature of quantum mechanics, considered a key resource in quantum information processing. Measuring entanglement is an essential step in a wide range…
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…
Cosmic Bell Test using Random Measurement Settings from High-Redshift Quasars
Dominik Rauch, Johannes Handsteiner, Armin Hochrainer +17
In this Letter, we present a cosmic Bell experiment with polarization-entangled photons, in which measurement settings were determined based on real-time measurements of the wavele…
Nonclassicality of induced coherence without induced emission
M. Lahiri, A. Hochrainer, R. Lapkiewicz +2
Interference of two beams produced at separate biphoton sources was first observed more than two decades ago. The phenomenon, often called "induced coherence without induced emissi…
Quantifying the Momentum Correlation between Two Light Beams by Detecting One
Armin Hochrainer, Mayukh Lahiri, Radek Lapkiewicz +2
We report a measurement of the transverse momentum correlation between two photons by detecting only one of them. Our method uses two identical sources in an arrangement, in which…
Interference Fringes Controlled by Non-Interfering Photons
Armin Hochrainer, Mayukh Lahiri, Radek Lapkiewicz +2
We observe spatial fringes in the interference of two beams, which are controlled by a third beam through the phenomenon of induced coherence without induced emission. We show that…
Twin Photon Correlations in Single-Photon Interference
Mayukh Lahiri, Armin Hochrainer, Radek Lapkiewicz +2
We show that it is possible to generate a novel single-photon fringe pattern by using two spatially separated identical bi-photon sources. The fringes are similar to the ones obser…
Entanglement by Path Identity
Mario Krenn, Armin Hochrainer, Mayukh Lahiri +1
Quantum entanglement is one of the most prominent features of quantum mechanics and forms the basis of quantum information technologies. Here we present a novel method for the crea…
Significant-loophole-free test of Bell's theorem with entangled photons
Marissa Giustina, Marijn A. M. Versteegh, Sören Wengerowsky +19
Local realism is the worldview in which physical properties of objects exist independently of measurement and where physical influences cannot travel faster than the speed of light…
Partial Polarization by Quantum Distinguishability
Mayukh Lahiri, Armin Hochrainer, Radek Lapkiewicz +2
Partial polarization is the manifestation of the correlation between two mutually orthogonal transverse field components associated with a light beam. We show both theoretically an…