TY - JOUR
T1 - One-Shot Coherence Distillation: Towards Completing the Picture
JF - IEEE Transactions on Information Theory
Y1 - 2019
A1 - Zhao, Qi
A1 - Liu, Yunchao
A1 - Yuan, Xiao
A1 - Chitambar, Eric
A1 - Winter, Andreas
VL - 65
UR - https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=18https://ieeexplore.ieee.org/document/8691620/http://xplorestaging.ieee.org/ielx7/18/8836351/08691620.pdf?arnumber=8691620https://ieeexplore.ieee.org/ielaam/18/8836351/8691620-aam.pdf
JO - IEEE Trans. Inform. Theory
ER -
TY - JOUR
T1 - Multi-photon entanglement in high dimensions
JF - Nature Photonics
Y1 - 2016
A1 - Malik, Mehul
A1 - Erhard, Manuel
A1 - Huber, Marcus
A1 - Krenn, Mario
A1 - Robert Fickler
A1 - Anton Zeilinger
PB - Nature Publishing Group
VL - 10
SN - 1749-4885
UR - http://dx.doi.org/10.1038/nphoton.2016.12
IS - 4
ER -
TY - JOUR
T1 - Experimental access to higher-dimensional entangled quantum systems using integrated optics
JF - Optica
Y1 - 2015
A1 - Christoph Schaeff
A1 - Robert Polster
A1 - Huber, Marcus
A1 - Ramelow, Sven
A1 - Anton Zeilinger
KW - Integrated optics
KW - quantum optics
AB - Integrated optics allows for the generation and control of increasingly complex photonic states on chip-based architectures. Here, we implement two entangled qutrits&\#x2014;a nine-dimensional quantum system&\#x2014;and demonstrate an exceptionally high degree of experimental control. The approach, which is conceptually different to common bulk optical implementations, is heavily based on methods of integrated in-fiber and on-chip technologies and further motivated by methods commonly used in today&\#x2019;s telecommunications industry. The system is composed of an in-fiber source creating entangled qutrit states of any amplitude and phase, and an on-chip integrated general Multiport enabling the realization of any desired local unitary transformation within the two qutrit nine-dimensional Hilbert space. The complete design is readily extendible toward higher dimensions with moderate increase in complexity. Ultimately, our scheme allows for complete on-chip integration. We demonstrate the flexibility and generality of our system by realizing a complete characterization of the two-qutrit space of higher-order Einstein&\#x2013;Podolsky&\#x2013;Rosen correlations.
PB - OSA
VL - 2
UR - http://www.osapublishing.org/optica/abstract.cfm?URI=optica-2-6-523
ER -
TY - JOUR
T1 - Generation and confirmation of a (100 x 100)-dimensional entangled quantum system
JF - Proceedings of the National Academy of Sciences
Y1 - 2014
A1 - Krenn, M.
A1 - Huber, M
A1 - Fickler, R.
A1 - Lapkiewicz, R.
A1 - Ramelow, S.
A1 - Zeilinger, A.
AB - Entangled quantum systems have properties that have fundamentally overthrown the classical worldview. Increasing the complexity of entangled states by expanding their dimensionality allows the implementation of novel fundamental tests of nature, and moreover also enables genuinely new protocols for quantum information processing. Here we present the creation of a (100x100)-dimensional entangled quantum system, using spatial modes of photons. For its verification we develop a novel nonlinear criterion which infers entanglement dimensionality of a global state by using only information about its subspace correlations. This allows very practical experimental implementation as well as highly efficient extraction of entanglement dimensionality information. Applications in quantum cryptography and other protocols are very promising.
VL - 111
IS - 17
JO - Proceedings of the National Academy of Sciences
ER -
TY - JOUR
T1 - Interface between path and orbital angular momentum entanglement for high-dimensional photonic quantum information
JF - Nature Communications
Y1 - 2014
A1 - Robert Fickler
A1 - Radek Lapkiewicz
A1 - Huber, Marcus
A1 - Lavery, Martin P.J.
A1 - Padgett, Miles J.
A1 - Anton Zeilinger
AB - Photonics has become a mature field of quantum information science, where integrated optical circuits offer a way to scale the complexity of the setup as well as the dimensionality of the quantum state. On photonic chips, paths are the natural way to encode information. To distribute those high-dimensional quantum states over large distances, transverse spatial modes, like orbital angular momentum (OAM) possessing Laguerre Gauss modes, are favourable as flying information carriers. Here we demonstrate a quantum interface between these two vibrant photonic fields. We create three-dimensional path entanglement between two photons in a non-linear crystal and use a mode sorter as the quantum interface to transfer the entanglement to the OAM degree of freedom. Thus our results show a novel, flexible way to create high-dimensional spatial mode entanglement. Moreover, they pave the way to implement broad complex quantum networks where high-dimensionally entangled states could be distributed over distant photonic chips.
VL - 5
JO - Nat Comms
ER -
TY - JOUR
T1 - Entangled singularity patterns of photons in {Ince}-{Gauss} modes
JF - Physical Review A
Y1 - 2013
A1 - Krenn, Mario
A1 - Robert Fickler
A1 - Huber, Marcus
A1 - Radek Lapkiewicz
A1 - Plick, William
A1 - Ramelow, Sven
A1 - Anton Zeilinger
VL - 87
UR - http://link.aps.org/doi/10.1103/PhysRevA.87.012326
ER -
TY - JOUR
T1 - Disordered spinor Bose-Hubbard model
JF - Phys. Rev. A
Y1 - 2011
A1 - Ł{\k a}cki, M.
A1 - Paganelli, Simone
A1 - Ahufinger, V.
A1 - Sanpera, Anna
A1 - Zakrzewski, J.
KW - Condensed Matter - Other Condensed Matter
KW - Quantum Physics
AB - We study the zero-temperature phase diagram of the disordered spin-1 Bose-Hubbard model in a two-dimensional square lattice. To this aim, we use a mean-field Gutzwiller ansatz and a probabilistic mean-field perturbation theory. The spin interaction induces two different regimes, corresponding to a ferromagnetic and antiferromagnetic order. In the ferromagnetic case, the introduction of disorder reproduces analogous features of the disordered scalar Bose-Hubbard model, consisting in the formation of a Bose glass phase between Mott insulator lobes. In the antiferromagnetic regime, the phase diagram differs more from the scalar case. Disorder in the chemical potential can lead to the disappearance of Mott insulator lobes with an odd-integer filling factor and, for sufficiently strong spin coupling, to Bose glass of singlets between even-filling Mott insulator lobes. Disorder in the spinor coupling parameter results in the appearance of a Bose glass phase only between the n and the n+1 lobes for n odd. Disorder in the scalar Hubbard interaction inhibits Mott insulator regions for occupation larger than a critical value.
VL - 83
UR - http://link.aps.org/doi/10.1103/PhysRevA.83.013605
ER -
TY - JOUR
T1 - Spin Effects in Bose-Glass Phases
JF - J Low Temp Phys
Y1 - 2011
A1 - Paganelli, Simone
A1 - Ła̧cki, Mateusz
A1 - Ahufinger, Veronica
A1 - Zakrzewski, Jakub
A1 - Sanpera, Anna
VL - 165
UR - http://www.springerlink.com/content/10w5036068935773/
ER -
TY - JOUR
T1 - Measuring the Complete Transverse Spatial Mode Spectrum of a Wave Field
JF - Physical Review Letters
Y1 - 2008
A1 - Calvo, Gabriel F.
A1 - Picon, Antonio
A1 - Zambrini, Roberta
VL - 100
UR - http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PRLTAO000100000017173902000001&idtype=cvips&prog=normal
ER -
TY - JOUR
T1 - Quantum Polarization Spectroscopy of Ultracold Spinor Gases
JF - Physical Review Letters
Y1 - 2007
A1 - Eckert, Kai
A1 - Zawitkowski, L.
A1 - Sanpera, Anna
A1 - Lewenstein, Maciej
A1 - Polzik, Eugene S.
VL - 98
UR - http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PRLTAO000098000010100404000001&idtype=cvips&prog=normal
ER -
TY - JOUR
T1 - Ultracold atomic Bose and Fermi spinor gases in optical lattices
JF - New Journal of Physics
Y1 - 2007
A1 - Eckert, Kai
A1 - Zawitkowski, L.
A1 - Leskinen, M. J.
A1 - Sanpera, Anna
A1 - Lewenstein, Maciej
KW - optical lattices
VL - 9
UR - http://iopscience.iop.org/1367-2630/9/5/133/pdf/1367-2630\_9\_5\_133.pdf
ER -
TY - JOUR
T1 - Strongly correlated Fermi-Bose mixtures in disordered optical lattices
JF - JOURNAL OF PHYSICS-LONDON-B ATOMIC MOLECULAR AND OPTICAL PHYSICS
Y1 - 2006
A1 - Sanchez-Palencia, L.
A1 - Ahufinger, Veronica
A1 - Kantian, A.
A1 - Zakrzewski, J.
A1 - Sanpera, Anna
A1 - Lewenstein, Maciej
KW - optical lattices
VL - 39
UR - http://iopscience.iop.org/0953-4075/39/10/S12/pdf/0953-4075\_39\_10\_S12.pdf
ER -
TY - JOUR
T1 - Cold Atoms in Non-Abelian Gauge Potentials: From the Hofstadter "Moth" to Lattice Gauge Theory
JF - Physical Review Letters
Y1 - 2005
A1 - Osterloh, K.
A1 - Baig, Marià
A1 - Santos, L.
A1 - Zoller, P.
A1 - Lewenstein, Maciej
AB - We demonstrate how to create artificial external non-Abelian gauge potentials acting on cold atoms in optical lattices. The method employs atoms with k internal states, and laser assisted state sensitive tunneling, described by unitary k×k matrices. The single-particle dynamics in the case of intense U(2) vector potentials lead to a generalized Hofstadter butterfly spectrum which shows a complex mothlike structure. We discuss the possibility to realize non-Abelian interferometry (Aharonov-Bohm effect) and to study many-body dynamics of ultracold matter in external lattice gauge fields.
PB - American Physical Society
VL - 95
UR - http://link.aps.org/doi/10.1103/PhysRevLett.95.010403
ER -
TY - JOUR
T1 - Atomic Fermi-Bose Mixtures in Inhomogeneous and Random Lattices: From Fermi Glass to Quantum Spin Glass and Quantum Percolation
JF - Physical Review Letters
Y1 - 2004
A1 - Sanpera, A.
A1 - Kantian, A.
A1 - Sanchez-Palencia, L.
A1 - Zakrzewski, J.
A1 - Lewenstein, M.
VL - 93
UR - http://prl.aps.org/abstract/PRL/v93/i4/e040401
ER -
TY - JOUR
T1 - Soliton Eigenvalue Control in Optical Lattices
JF - Physical Review Letters
Y1 - 2004
A1 - Kartashov, Yaroslav
A1 - Crasovan, Lucian-Cornel
A1 - Zelenina, Anna
A1 - Vysloukh, Victor
A1 - Sanpera, Anna
A1 - Lewenstein, Maciej
A1 - Torner, Lluis
VL - 93
UR - http://prl.aps.org/abstract/PRL/v93/i14/e143902
ER -