Verifying continuous-variable entanglement in finite spaces
J. Sperling, W. Vogel, Physical Review A (2009).
LibreCat: /record/26360
DOI: 10.1103/physreva.79.052313

Representation of entanglement by negative quasiprobabilities
J. Sperling, W. Vogel, Physical Review A (2009).
LibreCat: /record/26361
DOI: 10.1103/physreva.79.042337

Necessary and sufficient conditions for bipartite entanglement
J. Sperling, W. Vogel, Physical Review A (2009).
LibreCat: /record/26362
DOI: 10.1103/physreva.79.022318

Characterizing nonclassicality and entanglement
W. Vogel, T. Kiesel, J. Sperling, Optics and Spectroscopy (2010) 197–205.
LibreCat: /record/26359
DOI: 10.1134/s0030400x10020074

Determination of the Schmidt number
J. Sperling, W. Vogel, Physical Review A (2011).
LibreCat: /record/26357
DOI: 10.1103/physreva.83.042315

The Schmidt number as a universal entanglement measure
J. Sperling, W. Vogel, Physica Scripta (2011).
LibreCat: /record/26358
DOI: 10.1088/0031-8949/83/04/045002

Quantification of nonclassicality
C. Gehrke, J. Sperling, W. Vogel, Physical Review A (2012).
LibreCat: /record/26351
DOI: 10.1103/physreva.86.052118

Strongly entangled light from planar microcavities
D. Pagel, H. Fehske, J. Sperling, W. Vogel, Physical Review A (2012).
LibreCat: /record/26352
DOI: 10.1103/physreva.86.052313

Analytical progress on symmetric geometric discord: Measurement-based upper bounds
A. Miranowicz, P. Horodecki, R.W. Chhajlany, J. Tuziemski, J. Sperling, Physical Review A (2012).
LibreCat: /record/26353
DOI: 10.1103/physreva.86.042123

Sub-Binomial Light
J. Sperling, W. Vogel, G.S. Agarwal, Physical Review Letters (2012).
LibreCat: /record/26354
DOI: 10.1103/physrevlett.109.093601

Entanglement quasiprobabilities of squeezed light
J. Sperling, W. Vogel, New Journal of Physics (2012).
LibreCat: /record/26355
DOI: 10.1088/1367-2630/14/5/055026

True photocounting statistics of multiple on-off detectors
J. Sperling, W. Vogel, G.S. Agarwal, Physical Review A (2012).
LibreCat: /record/26356
DOI: 10.1103/physreva.85.023820

Correlation measurements with on-off detectors
J. Sperling, W. Vogel, G.S. Agarwal, Physical Review A (2013).
LibreCat: /record/26347
DOI: 10.1103/physreva.88.043821

Multipartite entangled light from driven microcavities
D. Pagel, H. Fehske, J. Sperling, W. Vogel, Physical Review A (2013).
LibreCat: /record/26348
DOI: 10.1103/physreva.88.042310

Multipartite Entanglement Witnesses
J. Sperling, W. Vogel, Physical Review Letters (2013).
LibreCat: /record/26349
DOI: 10.1103/physrevlett.111.110503

Quasiprobabilities for multipartite quantum correlations of light
E. Agudelo, J. Sperling, W. Vogel, Physical Review A (2013).
LibreCat: /record/26350
DOI: 10.1103/physreva.87.033811

Structural Quantification of Entanglement
F. Shahandeh, J. Sperling, W. Vogel, Physical Review Letters (2014).
LibreCat: /record/26340
DOI: 10.1103/physrevlett.113.260502

Detection of nonlocal superpositions
A.J. Gutiérrez-Esparza, W.M. Pimenta, B. Marques, A.A. Matoso, J. Sperling, W. Vogel, S. Pádua, Physical Review A (2014).
LibreCat: /record/26341
DOI: 10.1103/physreva.90.032328

Witnessing the degree of nonclassicality of light
M. Mraz, J. Sperling, W. Vogel, B. Hage, Physical Review A (2014).
LibreCat: /record/26342
DOI: 10.1103/physreva.90.033812

Unified quantification of nonclassicality and entanglement
W. Vogel, J. Sperling, Physical Review A (2014).
LibreCat: /record/26343
DOI: 10.1103/physreva.89.052302

Quantum state engineering by click counting
J. Sperling, W. Vogel, G.S. Agarwal, Physical Review A (2014).
LibreCat: /record/26344
DOI: 10.1103/physreva.89.043829

Bipartite bound entanglement in continuous variables through degaussification
F.E.S. Steinhoff, M.C. de Oliveira, J. Sperling, W. Vogel, Physical Review A (2014).
LibreCat: /record/26345
DOI: 10.1103/physreva.89.032313

Operational Gaussian Schmidt-number witnesses
F. Shahandeh, J. Sperling, W. Vogel, Physical Review A (2014).
LibreCat: /record/26346
DOI: 10.1103/physreva.88.062323

Homodyne detection with on-off detector systems
T. Lipfert, J. Sperling, W. Vogel, Physical Review A (2015).
LibreCat: /record/26330
DOI: 10.1103/physreva.92.053835

Continuous sampling of the squeezed-state nonclassicality
E. Agudelo, J. Sperling, W. Vogel, S. Köhnke, M. Mraz, B. Hage, Physical Review A (2015).
LibreCat: /record/26331
DOI: 10.1103/physreva.92.033837

Unified nonclassicality criteria
S. Ryl, J. Sperling, E. Agudelo, M. Mraz, S. Köhnke, B. Hage, W. Vogel, Physical Review A (2015).
LibreCat: /record/26332
DOI: 10.1103/physreva.92.011801

Convex ordering and quantification of quantumness
J. Sperling, W. Vogel, Physica Scripta (2015).
LibreCat: /record/26334
DOI: 10.1088/0031-8949/90/7/074024

Entanglement and phase properties of noisy NOON states
M. Bohmann, J. Sperling, W. Vogel, Physical Review A (2015).
LibreCat: /record/26335
DOI: 10.1103/physreva.91.042332

Entanglement witnesses for indistinguishable particles
A. Reusch, J. Sperling, W. Vogel, Physical Review A (2015).
LibreCat: /record/26336
DOI: 10.1103/physreva.91.042324

Nonclassicality Phase-Space Functions: More Insight with Fewer Detectors
A. Luis, J. Sperling, W. Vogel, Physical Review Letters (2015).
LibreCat: /record/26337
DOI: 10.1103/physrevlett.114.103602

Balanced homodyne detection with on-off detector systems: Observable nonclassicality criteria
J. Sperling, W. Vogel, G.S. Agarwal, EPL (Europhysics Letters) (2015).
LibreCat: /record/26338
DOI: 10.1209/0295-5075/109/34001

Full Multipartite Entanglement of Frequency-Comb Gaussian States
S. Gerke, J. Sperling, W. Vogel, Y. Cai, J. Roslund, N. Treps, C. Fabre, Physical Review Letters (2015).
LibreCat: /record/26339
DOI: 10.1103/physrevlett.114.050501

Uncovering Quantum Correlations with Time-Multiplexed Click Detection
J. Sperling, M. Bohmann, W. Vogel, G. Harder, B. Brecht, V. Ansari, C. Silberhorn, Physical Review Letters (2015).
LibreCat: /record/26333
DOI: 10.1103/physrevlett.115.023601

Multipartite Entanglement of a Two-Separable State
S. Gerke, J. Sperling, W. Vogel, Y. Cai, J. Roslund, N. Treps, C. Fabre, Physical Review Letters (2016).
LibreCat: /record/26322
DOI: 10.1103/physrevlett.117.110502

Quantum Correlations from the Conditional Statistics of Incomplete Data
J. Sperling, T. Bartley, G. Donati, M. Barbieri, X.-M. Jin, A. Datta, W. Vogel, I.A. Walmsley, Physical Review Letters (2016).
LibreCat: /record/26323
DOI: 10.1103/physrevlett.117.083601

Gaussian entanglement in the turbulent atmosphere
M. Bohmann, A.A. Semenov, J. Sperling, W. Vogel, Physical Review A (2016).
LibreCat: /record/26324
DOI: 10.1103/physreva.94.010302

Operational definition of quantum correlations of light
J. Sperling, W. Vogel, G.S. Agarwal, Physical Review A (2016).
LibreCat: /record/26325
DOI: 10.1103/physreva.94.013833

Characterizing maximally singular phase-space distributions
J. Sperling, Physical Review A (2016).
LibreCat: /record/26326
DOI: 10.1103/physreva.94.013814

Multitime correlation functions in nonclassical stochastic processes
F. Krumm, J. Sperling, W. Vogel, Physical Review A (2016).
LibreCat: /record/26327
DOI: 10.1103/physreva.93.063843

Witnessing random unitary and projective quantum channels: Complementarity between separable and maximally entangled states
D. Bruns, J. Sperling, S. Scheel, Physical Review A (2016).
LibreCat: /record/26328
DOI: 10.1103/physreva.93.032132

Harnessing click detectors for the genuine characterization of light states
R. Heilmann, J. Sperling, A. Perez-Leija, M. Gräfe, M. Heinrich, S. Nolte, W. Vogel, A. Szameit, Scientific Reports (2016).
LibreCat: /record/26329
DOI: 10.1038/srep19489

Separable and Inseparable Quantum Trajectories
J. Sperling, I.A. Walmsley, Physical Review Letters (2017).
LibreCat: /record/26307
DOI: 10.1103/physrevlett.119.170401

High intensity click statistics from a 10 × 10 avalanche photodiode array
J. Kröger, T. Ahrens, J. Sperling, W. Vogel, H. Stolz, B. Hage, Journal of Physics B: Atomic, Molecular and Optical Physics (2017).
LibreCat: /record/26308
DOI: 10.1088/1361-6455/aa8e68

Quantum coherences of indistinguishable particles
J. Sperling, A. Perez-Leija, K. Busch, I.A. Walmsley, Physical Review A (2017).
LibreCat: /record/26309
DOI: 10.1103/physreva.96.032334

Conditional Hybrid Nonclassicality
E. Agudelo, J. Sperling, L.S. Costanzo, M. Bellini, A. Zavatta, W. Vogel, Physical Review Letters (2017).
LibreCat: /record/26310
DOI: 10.1103/physrevlett.119.120403

Displaced photon-number entanglement tests
B. Kühn, W. Vogel, J. Sperling, Physical Review A (2017).
LibreCat: /record/26311
DOI: 10.1103/physreva.96.032306

Entanglement verification of noisy NOON states
M. Bohmann, J. Sperling, W. Vogel, Physical Review A (2017).
LibreCat: /record/26312
DOI: 10.1103/physreva.96.012321

Identification of nonclassical properties of light with multiplexing layouts
J. Sperling, A. Eckstein, W.R. Clements, M. Moore, J.J. Renema, W.S. Kolthammer, S.W. Nam, A. Lita, T. Gerrits, I.A. Walmsley, G.S. Agarwal, W. Vogel, Physical Review A (2017).
LibreCat: /record/26313
DOI: 10.1103/physreva.96.013804

Entanglement in macroscopic systems
J. Sperling, I.A. Walmsley, Physical Review A (2017).
LibreCat: /record/26314
DOI: 10.1103/physreva.95.062116

Quantum correlations in composite systems
J. Sperling, E. Agudelo, I.A. Walmsley, W. Vogel, Journal of Physics B: Atomic, Molecular and Optical Physics (2017).
LibreCat: /record/26315
DOI: 10.1088/1361-6455/aa7438

Time-dependent quantum correlations in phase space
F. Krumm, W. Vogel, J. Sperling, Physical Review A (2017).
LibreCat: /record/26316
DOI: 10.1103/physreva.95.063805

Probing free-space quantum channels with laboratory-based experiments
M. Bohmann, R. Kruse, J. Sperling, C. Silberhorn, W. Vogel, Physical Review A (2017).
LibreCat: /record/26317
DOI: 10.1103/physreva.95.063801

Quantifying nonclassicality by characteristic functions
S. Ryl, J. Sperling, W. Vogel, Physical Review A (2017).
LibreCat: /record/26318
DOI: 10.1103/physreva.95.053825

Detector-Independent Verification of Quantum Light
J. Sperling, W.R. Clements, A. Eckstein, M. Moore, J.J. Renema, W.S. Kolthammer, S.W. Nam, A. Lita, T. Gerrits, W. Vogel, G.S. Agarwal, I.A. Walmsley, Physical Review Letters (2017).
LibreCat: /record/26319
DOI: 10.1103/physrevlett.118.163602

Direct calibration of click-counting detectors
M. Bohmann, R. Kruse, J. Sperling, C. Silberhorn, W. Vogel, Physical Review A (2017).
LibreCat: /record/26320
DOI: 10.1103/physreva.95.033806

Higher-order nonclassical effects in fluctuating-loss channels
M. Bohmann, J. Sperling, A.A. Semenov, W. Vogel, Physical Review A (2017).
LibreCat: /record/26321
DOI: 10.1103/physreva.95.012324

Two-particle four-point correlations in dynamically disordered tight-binding networks
A. Perez-Leija, R. de J. Leon-Montiel, J. Sperling, H. Moya-Cessa, A. Szameit, K. Busch, Journal of Physics B: Atomic, Molecular and Optical Physics (2017).
LibreCat: /record/26306
DOI: 10.1088/1361-6455/aa9aa1

Quasistates and quasiprobabilities
J. Sperling, I.A. Walmsley, Physical Review A (2018).
LibreCat: /record/26301
DOI: 10.1103/physreva.98.042122

Numerical Construction of Multipartite Entanglement Witnesses
S. Gerke, W. Vogel, J. Sperling, Physical Review X (2018).
LibreCat: /record/26302
DOI: 10.1103/physrevx.8.031047

Quasiprobability representation of quantum coherence
J. Sperling, I.A. Walmsley, Physical Review A (2018).
LibreCat: /record/26303
DOI: 10.1103/physreva.97.062327

Geometrical picture of photocounting measurements
O.P. Kovalenko, J. Sperling, W. Vogel, A.A. Semenov, Physical Review A (2018).
LibreCat: /record/26304
DOI: 10.1103/physreva.97.023845

Incomplete Detection of Nonclassical Phase-Space Distributions
M. Bohmann, J. Tiedau, T. Bartley, J. Sperling, C. Silberhorn, W. Vogel, Physical Review Letters (2018).
LibreCat: /record/26305
DOI: 10.1103/physrevlett.120.063607

Quasiprobability distributions for quantum-optical coherence and beyond
J. Sperling, W. Vogel, Physica Scripta (2019).
LibreCat: /record/26293
DOI: 10.1088/1402-4896/ab5501

Measuring coherence of quantum measurements
V. Cimini, I. Gianani, M. Sbroscia, J. Sperling, M. Barbieri, Physical Review Research (2019).
LibreCat: /record/26297
DOI: 10.1103/physrevresearch.1.033020

What can single photons do what lasers cannot do?
M. Rezai, J. Sperling, I. Gerhardt, Quantum Science and Technology (2019).
LibreCat: /record/26298
DOI: 10.1088/2058-9565/ab3d56

Benchmarking of Gaussian boson sampling using two-point correlators
D.S. Phillips, M. Walschaers, J.J. Renema, I.A. Walmsley, N. Treps, J. Sperling, Physical Review A (2019).
LibreCat: /record/26299
DOI: 10.1103/physreva.99.023836

Mode-independent quantum entanglement for light
J. Sperling, A. Perez-Leija, K. Busch, C. Silberhorn, Physical Review A (2019).
LibreCat: /record/26296
DOI: 10.1103/physreva.100.062129

Experimental Reconstruction of Entanglement Quasiprobabilities
J. Sperling, E. Meyer-Scott, S. Barkhofen, B. Brecht, C. Silberhorn, Physical Review Letters (2019).
LibreCat: /record/26300
DOI: 10.1103/physrevlett.122.053602

Detector-Agnostic Phase-Space Distributions
J. Sperling, D.S. Phillips, J.F.F. Bulmer, G.S. Thekkadath, A. Eckstein, T.A.W. Wolterink, J. Lugani, S.W. Nam, A. Lita, T. Gerrits, W. Vogel, G.S. Agarwal, C. Silberhorn, I.A. Walmsley, Physical Review Letters (2020).
LibreCat: /record/26294
DOI: 10.1103/physrevlett.124.013605

Quantum photonics with active feedback loops
M. Engelkemeier, L. Lorz, S. De, B. Brecht, I. Dhand, M.B. Plenio, C. Silberhorn, J. Sperling, Physical Review A 102 (2020).
LibreCat: /record/21023
DOI: 10.1103/physreva.102.023712

Local Versus Global Two-Photon Interference in Quantum Networks
T. Nitsche, S. De, S. Barkhofen, E. Meyer-Scott, J. Tiedau, J. Sperling, A. Gábris, I. Jex, C. Silberhorn, Physical Review Letters (2020).
LibreCat: /record/26289
DOI: 10.1103/physrevlett.125.213604

Probing nonclassicality with matrices of phase-space distributions
M. Bohmann, E. Agudelo, J. Sperling, Quantum (2020).
LibreCat: /record/26290
DOI: 10.22331/q-2020-10-15-343

Classical evolution in quantum systems
J. Sperling, I.A. Walmsley, Physica Scripta (2020).
LibreCat: /record/26292
DOI: 10.1088/1402-4896/ab833b

Quantum optical coherence: From linear to nonlinear interferometers
K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).
LibreCat: /record/26889
DOI: 10.1103/physreva.104.043707

Quantifying Quantum Coherence in Polariton Condensates
C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, PRX Quantum (2021).
LibreCat: /record/26283
DOI: 10.1103/prxquantum.2.030320

Probing the topological Anderson transition with quantum walks
D. Bagrets, K.W. Kim, S. Barkhofen, S. De, J. Sperling, C. Silberhorn, A. Altland, T. Micklitz, Physical Review Research (2021).
LibreCat: /record/26284
DOI: 10.1103/physrevresearch.3.023183

Transient subdiffusion via disordered quantum walks
A. Geraldi, S. De, A. Laneve, S. Barkhofen, J. Sperling, P. Mataloni, C. Silberhorn, Physical Review Research (2021).
LibreCat: /record/26287
DOI: 10.1103/physrevresearch.3.023052

Statistical Benchmarking of Scalable Photonic Quantum Systems
J. Tiedau, M. Engelkemeier, B. Brecht, J. Sperling, C. Silberhorn, Physical Review Letters 126 (2021).
LibreCat: /record/21021
DOI: 10.1103/physrevlett.126.023601

Experimental entanglement characterization of two-rebit states
N. Prasannan, S. De, S. Barkhofen, B. Brecht, C. Silberhorn, J. Sperling, Physical Review A 103 (2021).
LibreCat: /record/26286
DOI: 10.1103/physreva.103.l040402

Quantum Correlations beyond Entanglement and Discord
S. Köhnke, E. Agudelo, M. Schünemann, O. Schlettwein, W. Vogel, J. Sperling, B. Hage, Physical Review Letters (2021).
LibreCat: /record/26285
DOI: 10.1103/physrevlett.126.170404

Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity
T. Meier, J.P. Hoepker, M. Protte, C. Eigner, C. Silberhorn, P.R. Sharapova, J. Sperling, T. Bartley, in: Conference on Lasers and Electro-Optics: Applications and Technology, Optica Publishing Group, 2022, p. JTu3A. 17.
LibreCat: /record/43744
DOI: 10.1364/CLEO_AT.2022.JTu3A.17

Direct Measurement of Higher-Order Nonlinear Polarization Squeezing
N. Prasannan, J. Sperling, B. Brecht, C. Silberhorn, Physical Review Letters 129 (2022).
LibreCat: /record/34884
DOI: 10.1103/physrevlett.129.263601

Driven Gaussian quantum walks
P. Held, M. Engelkemeier, S. De, S. Barkhofen, J. Sperling, C. Silberhorn, Physical Review A 105 (2022).
LibreCat: /record/30921
DOI: 10.1103/physreva.105.042210

Entanglement of particles versus entanglement of fields: Independent quantum resources
J. Sperling, E. Agudelo, Physical Review A 107 (2023).
LibreCat: /record/44050
DOI: 10.1103/physreva.107.042420

Detector entanglement: Quasidistributions for Bell-state measurements
J. Sperling, I. Gianani, M. Barbieri, E. Agudelo, Physical Review A 107 (2023).
LibreCat: /record/40477
DOI: 10.1103/physreva.107.012426

Tracking Quantum Coherence in Polariton Condensates with Time-Resolved Tomography
C. Lüders, M. Pukrop, F. Barkhausen, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, M. Aßmann, Physical Review Letters 130 (2023).
LibreCat: /record/42973
DOI: 10.1103/physrevlett.130.113601

Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors
M. Protte, T. Schapeler, J. Sperling, T. Bartley, Optica Quantum 2 (2024).
LibreCat: /record/50840
DOI: 10.1364/opticaq.502201

Unbreakable and breakable quantum censorship
J. Pinske, J. Sperling, Physical Review A 109 (2024).
LibreCat: /record/54093
DOI: 10.1103/physreva.109.052408

Realization of high-fidelity unitary operations on up to 64 frequency bins
S. De, V. Ansari, J. Sperling, S. Barkhofen, B. Brecht, C. Silberhorn, Physical Review Research 6 (2024).
LibreCat: /record/54288
DOI: 10.1103/physrevresearch.6.l022040