**Research Profile:**

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Associate Professor and member of the faculty of the Masters and Doctorate program of the Physics Department at UdeC. He is currently researching **Quantum Optics and Quantum Information at the MIRO research center**.

**Email: **swalborn@udec.cl**Office: **CEFOP, FCFM

**Research Projects**

- Fondecyt 1200266 – ANID

**Papers**

**Exposure of subtle multipartite quantum nonlocality**npj Quantum Information

**Stimulated Parametric Down-Conversion with Vector Vortex Beams**Physical Review Applied

**Experimental demonstration of the advantage of using coherent measurements for phase estimation in the presence of depolarizing noise**Physical Review A

**Interferometric sensing of the tilt angle of a Gaussian beam**Physical Review Research

**Boosting Entanglement Generation in Down-Conversion with Incoherent Illumination**Physical Review Letters

**Detection of quantum non-Markovianity close to the Born-Markov approximation**Physical Review

**Distillation of Quantum Steering**Physical Review Letters

**Multi-core fiber integrated multi-port beam splitters for quantum information processing**Optica

**Quantum optical description of phase conjugation of vector vortex beams in stimulated parametric down-conversion**Physical Review Applied

**Real-time phase conjugation of vector vortex beams**ACS Photonics

**Robust interferometric sensing using two-photon interference**Physical Review Applied

**Experimental investigation of linear-optics-based quantum target detection**Physical Review A

**Optical simulation of the free Dirac equation**Physical Review A

**Phase Conjugation and Mode Conversion in Stimulated Parametric Down-Conversion with Orbital Angular Momentum: a Geometrical Interpretation**Brazilian Journal of Physics

**Experimental quantum information processing with the Talbot effect**Journal of Optics (United Kingdom)

**Klyshko’s advanced-wave picture in stimulated parametric down-conversion with a spatially structured pump beam**Physical Review A

**Mutual Unbiasedness in Coarse-Grained Continuous Variables**Physical Review Letters

**Mutually unbiased coarse-grained measurements of two or more phase-space variables**Physical Review A

**Quantum erasure in the near-field**Journal of Physics B: Atomic, Molecular and Optical Physics

**Quantum-enhanced sensing from hyperentanglement**Physical Review A

**Testing for entanglement with periodic coarse graining**Physical Review A

**Uncertainty relations for coarse-grained measurements: An overview**Entropy

**Achieving metrological precision limits through postselection**Physical Review A

**Experimental multipartite entanglement and randomness certification of the W state in the quantum steering scenario**Quantum Science and Technology

**Free-space entangled quantum carpets**Physical Review A

**General conditions for maximal violation of non-contextuality in discrete and continuous variables**Journal of Physics A: Mathematical and Theoretical

**Contextually in a Peres – Mermin square using arbitrary operators**Journal of Physics: Conference Series

**Detecting entanglement of continuous variables with three mutually unbiased bases**Physical Review A

**Entanglement-breaking channels and entanglement sudden death**Physical Review A

**Quantum information processing in phase space: A modular variables approach**Physical Review A

**Uncertainty relations for characteristic functions**Physical Review A

**80 years of steering and the Einstein-Podolsky-Rosen paradox: Introduction**Journal of the Optical Society of America B: Optical Physics

**Detecting multipartite spatial entanglement with modular variables**Physical Review A – Atomic, Molecular, and Optical Physics

**Detection of entanglement in asymmetric quantum networks and multipartite quantum steering**Nature Communications

**Deterministic quantum computation with one photonic qubit**Physical Review A – Atomic, Molecular, and Optical Physics

**Experimental determination of multipartite entanglement with incomplete information**Physical Review X

**Quantum information processing by weaving quantum Talbot carpets**Physical Review A – Atomic, Molecular, and Optical Physics

**Resilience of hybrid optical angular momentum qubits to turbulence**Scientific Reports

**Systematic construction of genuine-multipartite-entanglement criteria in continuous-variable systems using uncertainty relations**Physical Review A – Atomic, Molecular, and Optical Physics

**Toolbox for continuous-variable entanglement production and measurement using spontaneous parametric down-conversion**Physical Review A – Atomic, Molecular, and Optical Physics

**Ancilla-assisted measurement of photonic spatial correlations and entanglement**Physical Review Letters

**Characterization of a spatial light modulator as a polarization quantum channel**Physical Review A – Atomic, Molecular, and Optical Physics

**Continuous discretization of infinite-dimensional Hilbert spaces**Physical Review A – Atomic, Molecular, and Optical Physics

**Experimental entanglement redistribution under decoherence channels**Physical Review Letters

**Flow of quantum correlations from a two-qubit system to its environment**Physical Review A – Atomic, Molecular, and Optical Physics

**Hybrid single photon states: A resource for quantum communication and metrology**Optics InfoBase Conference Papers

**Hybrid single photon states: A resource for quantum communication and metrology**Optics InfoBase Conference Papers

**Linear-optical simulation of the cooling of a cluster-state Hamiltonian system**Physical Review Letters

**Measuring spatial correlations of photon pairs by automated raster scanning with spatial light modulators**Scientific Reports

**Non-markovianity through accessible information**Physical Review Letters

**Non-Markovianity through flow of information between a system and an environment**Physical Review A – Atomic, Molecular, and Optical Physics

**Optical integration of a real-valued function by measurement of a Stokes parameter**Journal of the Optical Society of America A: Optics and Image Science, and Vision

Photonic gears for ultra-sensitive angular measurements

Optics InfoBase Conference Papers

**Complete experimental toolbox for alignment-free quantum communication**2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013

**Complete experimental toolbox for alignment-free quantum communication**Optics InfoBase Conference Papers

**Direct measurement of the biphoton Wigner function through two-photon interference**Scientific Reports

**Einstein-Podolsky-Rosen steering inequalities from entropic uncertainty relations**Physical Review A – Atomic, Molecular, and Optical Physics

**Entropic EPR steering inequalities**Optics InfoBase Conference Papers

**Experimental observation of quantum correlations in modular variables**Optics InfoBase Conference Papers

**Genuine tripartite continuous-variable entanglement with spatial degrees of freedom of photons**Physical Review A – Atomic, Molecular, and Optical Physics

**Interferometric scheme for direct measurement of moments of transverse spatial variables of photons**Physical Review A – Atomic, Molecular, and Optical Physics

**Observation of the emergence of multipartite entanglement between a bipartite system and its environment**Optics InfoBase Conference Papers

**Photonic polarization gears for ultra-sensitive angular measurements**Nature Communications

**Reliable entanglement detection under coarse-grained measurements**Physical Review Letters

**Reliable entanglement detection under coarse-grained measurements**Optics InfoBase Conference Papers

**Reliable entanglement detection under coarse-grained measurements**Optics InfoBase Conference Papers

**Bell inequalities with continuous angular variables**Physical Review A – Atomic, Molecular, and Optical Physics

**Complete experimental toolbox for alignment-free quantum communication**Nature Communications

**Emergence of the pointer basis through the dynamics of correlations**Physical Review Letters

**Experimental estimate of a classicality witness via a single measurement**Physical Review Letters

Experimental investigation of dynamical invariants in bipartite entanglement

Physical Review A – Atomic, Molecular, and Optical Physics

**Experimental observation of quantum chaos in a beam of light**Nature Communications

**Experimental observation of quantum correlations in modular variables**Physical Review A – Atomic, Molecular, and Optical Physics

**Fourth-order coherence induced by spatial mode parity selection**Physical Review A – Atomic, Molecular, and Optical Physics

**Generalized Hermite-Gauss decomposition of the two-photon state produced by spontaneous parametric down conversion**Journal of Physics B: Atomic, Molecular and Optical Physics

**Heisenberg uncertainty relation for coarse-grained observables**EPL

**Observation of the emergence of multipartite entanglement between a bipartite system and its environment**Physical Review Letters

**One-sided device-independent quantum key distribution: Security, feasibility, and the connection with steering**Physical Review A – Atomic, Molecular, and Optical Physics

**Optimal uncertainty relations for extremely coarse-grained measurements**Physical Review A – Atomic, Molecular, and Optical Physics

**Production of non-local optical phase space vortices**2012 Conference on Lasers and Electro-Optics, CLEO 2012

**Continuous-variable quantum computation with spatial degrees of freedom of photons**Physical Review A – Atomic, Molecular, and Optical Physics

**Family of continuous-variable entanglement criteria using general entropy functions**Physical Review A – Atomic, Molecular, and Optical Physics

**Interference effects induced by non-local spatial filtering**Optics Express

**Production of optical phase space vortices with non-locally distributed mode converters**Journal of Optics

**Revealing hidden einstein-podolsky-rosen nonlocality**Physical Review Letters

**Spatial correlations in parametric down-conversion**Physics Reports

**Complete teleportation of a paraxial single-photon field**

Physical Review A – Atomic, Molecular, and Optical Physics

**Determining the dynamics of entanglement**Science

**Entropic Entanglement Criteria for Continuous Variables**Physical Review Letters

**Observation of a nonlocal optical vortex**Physical Review Letters

**Observation of tunable popescu-rohrlich correlations through postselection of a Gaussian state**Physical Review A

**Propagation of transverse intensity correlations of a two-photon state**Physical Review A

**Quantum entanglement beyond Gaussian criteria**Proceedings of the National Academy of Sciences of the United States of America

**BB84 quantum key distribution without a shared reference frame**Optics InfoBase Conference Papers

**Detection of transverse entanglement in phase space**Physical Review A

**Experimental investigation of the dynamics of entanglement: Sudden death, complementarity, and continuous monitoring of the environment**Physical Review A

**Hyperentanglement: Breaking the communication barrier**Nature Physics

**Observation of the entanglement sudden death**Conference on Quantum Electronics and Laser Science (QELS) – Technical Digest Series

**Quantum key distribution without a shared reference frame**Physical Review A

**Quantum random walks and wave-packet reshaping at the single-photon level**Physical Review A

**Schemes for quantum key distribution with higher-order alphabets using single-photon fractional Fourier optics**Physical Review A

**Entanglement and decoherence: Global versus local dynamics**Optics InfoBase Conference Papers

**Environment-induced sudden death of entanglement**Science

**Experimental determination of entanglement by a projective measurement**Physical Review A

**Experimental determination of entanglement by a projective measurement**

Optics InfoBase Conference Papers

**Experimental observation of environment-induced sudden death of entanglement**Proceedings of SPIE – The International Society for Optical Engineering

**Mapping continuous variables transverse spatial degrees of freedom of photons on a spin 1/2 system**Optics InfoBase Conference Papers

**Quantum communication without alignment using multiple-qubit single-photon states**Physical Review Letters

**Quantum nondemolition circuit for testing bipartite complementarity**Physical Review Letters

**Quantum teleportation of the angular spectrum of a single-photon field**Physical Review A

**Transverse spatial entanglement in parametric down-conversion**Physical Review A

**Violation of bell inequality with the fractional momentum of the photon: A step towards a new q-bit**Optics InfoBase Conference Papers

**A simple optical demonstration of quantum cryptography using transverse position and momentum variables**American Journal of Physics

**Experimental determination of entanglement with a single measurement**Nature

**Quantum information processing with hyperentangled photon states**Quantum Information and Computation

**Quantum key distribution with higher-order alphabets using spatially encoded qudits**Physical Review Letters

**Simultaneous observation of correlations in position-momentum and polarization variables**Physical Review A

**Conservation and entanglement of Hermite-Gaussian modes in parametric down-conversion**Physical Review A

**Experimental investigation of quantum key distribution with position and momentum of photon pairs**Physical Review A

**Implementing the Deutsch algorithm with polarization and transverse spatial modes**Journal of Optics B: Quantum and Semiclassical Optics

**Multimode Hong-Ou-Mandel interferometry**Modern Physics Letters B

**Entanglement and conservation of orbital angular momentum in spontaneous parametric down-conversion**Physical Review A

**Entanglement and conservation of orbital angular momentum in spontaneous parametric down-conversion**Physical Review A

**Generation of a Two-Photon Singlet Beam**Physical Review Letters

**Generation of a Two-Photon Singlet Beam**Physical Review Letters

**Hyperentanglement-assisted Bell-state analysis**Physical Review A

**Hyperentanglement-assisted Bell-state analysis**Physical Review A

**Multimode Hong-Ou-Mandel interference**Physical Review Letters

**Multimode Hong-Ou-Mandel Interference**Physical Review Letters

**Optical Bell-state analysis in the coincidence basis**Europhysics Letters

Quantum erasureAmerican Scientist2003 | other

**Double-slit quantum eraser**Physical Review A

**Double-slit quantum eraser**Physical Review A

**Spatial antibunching of photons with parametric down-conversion**Physical Review A

**Spatial antibunching of photons with parametric down-conversion**Physical Review A

**Experimental observation of spatial antibunching of photons**Physical Review Letters

**Dirac deltas and discontinuous functions**American Journal of Physics