Results 31 to 40 of about 824,226 (150)

Hierarchy of quantum non-Gaussian conservative motion

Communications Physics, 2022
Gaussian systems are useful for many quantum technologies but new applications will require control over nonlinear systems generating quantum non-Gaussian states. The authors present a method for the detection of quantum non-Gaussian states of mechanical
Darren W. Moore, Radim Filip
doaj   +1 more source

Gaussian intrinsic entanglement for states with partial minimum uncertainty

, 2017
We develop a theory of a quantifier of bipartite Gaussian entanglement called Gaussian intrinsic entanglement (GIE) which was proposed recently in [L. Mi\v{s}ta {\it et al.}, Phys. Rev. Lett. {\bf 117}, 240505 (2016)].
Baksová, Klára, Mišta Jr., Ladislav
core   +1 more source

Passivity and practical work extraction using Gaussian operations

New Journal of Physics, 2016
Quantum states that can yield work in a cyclical Hamiltonian process form one of the primary resources in the context of quantum thermodynamics. Conversely, states whose average energy cannot be lowered by unitary transformations are called passive ...
Eric G Brown, Nicolai Friis, Marcus Huber   +2 more
doaj   +1 more source

Continuous variable tangle, monogamy inequality, and entanglement sharing in Gaussian states of continuous variable systems

, 2006
For continuous-variable systems, we introduce a measure of entanglement, the continuous variable tangle ({\em contangle}), with the purpose of quantifying the distributed (shared) entanglement in multimode, multipartite Gaussian states.
Adesso G, Adesso G Serafini A Illuminati F, Cerf N, Cirac J I, Eisert J, Fabrizio Illuminati, Gerardo Adesso, Giedke G, Krüger Werner R F, Osborne T J Verstraete F, Plenio M B, Terhal B M, van Loock P   +12 more
core   +1 more source

Reliable quantum certification for photonic quantum technologies [PDF]

, 2015
A major roadblock for large-scale photonic quantum technologies is the lack of practical reliable certification tools. We introduce an experimentally friendly - yet mathematically rigorous - certification test for experimental preparations of arbitrary m-
Aolita, L., Eisert, J., Gogolin, C., Kliesch, M.   +3 more
core   +2 more sources

Bound entangled Gaussian states

, 2000
We discuss the entanglement properties of bipartite states with Gaussian Wigner functions. Separability and the positivity of the partial transpose are characterized in terms of the covariance matrix of the state, and it is shown that for systems ...
A. Peres, A. S. Holevo, J. von Neumann, L.-M. Duan, M. Horodecki, M. Horodecki, M. Lewenstein, M. M. Wolf, P. Horodecki, R. F. Werner, R. F. Werner, R. Simon   +11 more
core   +1 more source

Increasing entanglement between Gaussian states by coherent photon subtraction

, 2007
We experimentally demonstrate that the entanglement between Gaussian entangled states can be increased by non-Gaussian operations. Coherent subtraction of single photons from Gaussian quadrature-entangled light pulses, created by a non-degenerate ...
Dantan, Aurelien, Grangier, Philippe, Ourjoumtsev, Alexei, Tualle-Brouri, Rosa   +3 more
core   +3 more sources

The non-stabilizerness of fermionic Gaussian states [PDF]

Quantum
We introduce an efficient method to quantify nonstabilizerness in fermionic Gaussian states, overcoming the long-standing challenge posed by their extensive entanglement. Using a perfect sampling scheme based on an underlying determinantal point process,
Mario Collura, Jacopo De Nardis, Vincenzo Alba, Guglielmo Lami   +3 more
doaj   +1 more source

Phase Space Structure of Generalized Gaussian Cat States

, 2010
We analyze generalized Gaussian cat states obtained by superposing arbitrary Gaussian states, e.g., a coherent state and a squeezed state. The Wigner functions of such states exhibit the typical pair of Gaussian hills plus an interference term which ...
Arvind, Barnett, Berman, Bianucci, Braunstein, Breuer, Brodier, Carmichael, Cochrane, Dalvit, de Gosson, Dodonov, Ermann, Fabricio Toscano, Fernando Nicacio, Folland, Friedman, Gantsong, Gardiner, Gilchrist, Haroche, Heller, Hillery, Jeong, Jeong, Kells, Kenfack, Kim, Lindblad, Littlejohn, Liu, Marek, Mehlig, Meyer, Munro, Nicacio, O'Connell, Ourjoumtsev, Ozorio de Almeida, Raphael N.P. Maia, Raviola, Raúl O. Vallejos, Robinett, Saito, Serafini, Shalashilin, Simon, Szabo, Tannor, Tara, Toscano, Toscano, van der Wal, Vergini, Walls, Yurke, Zurek   +56 more
core   +1 more source

Quantum Illumination with Gaussian States [PDF]

, 2008
An optical transmitter irradiates a target region containing a bright thermal-noise bath in which a low-reflectivity object might be embedded. The light received from this region is used to decide whether the object is present or absent.
Erkmen, Baris I., Giovannetti, Vittorio, Guha, Saikat, Lloyd, Seth, Maccone, Lorenzo, Pirandola, Stefano, Shapiro, Jeffrey H., Tan, Si-Hui   +7 more
core   +2 more sources