TY - JOUR
AB - We explore the polarization hysteretic behaviour and field-dependent permittivity of ferroelectric-dielectric 2D materials formed by random dispersions of low permittivity inclusions in a ferroelectric matrix, using finite element simulations. We show how the degree of impenetrability of dielectric inclusions plays a substantial role in controlling the coercive field, remnant and saturation polarizations of the homogenized materials. The results highlight the significance of the degree of impenetrability of inclusion in tuning the effective polarization properties of such ferroelectric composites: coercive field drops significantly as percolation threshold is attained and remnant polarization decreases faster than a linear decay.
AU - Myroshnychenko, Viktor
AU - Mulavarickal Jose, Pious Mathews
AU - Farheen, Henna
AU - Ejaz, Shafaq
AU - Brosseau, Christian
AU - Förstner, Jens
ID - 52700
IS - 4
JF - Physica Scripta
KW - tet_topic_ferro
SN - 0031-8949
TI - From Swiss-cheese to discrete ferroelectric composites: assessing the ferroelectric butterfly shape in polarization loops
VL - 99
ER -
TY - JOUR
AB - In real photonic quantum systems losses are an unavoidable factor limiting the scalability to many modes and particles, restraining their application in fields as quantum information and communication. For this reason, a considerable amount of engineering effort has been taken in order to improve the quality of particle sources and system components. At the same time, data analysis and collection methods based on post-selection have been used to mitigate the effect of particle losses. This has allowed for investigating experimentally multi-particle evolutions where the observer lacks knowledge about the system's intermediate propagation states. Nonetheless, the fundamental question how losses affect the behaviour of the surviving subset of a multi-particle system has not been investigated so far. For this reason, here we study the impact of particle losses in a quantum walk of two photons reconstructing the output probability distributions for one photon conditioned on the loss of the other in a known mode and temporal step of our evolution network. We present the underlying theoretical scheme that we have devised in order to model controlled particle losses, we describe an experimental platform capable of implementing our theory in a time multiplexing encoding. In the end we show how localized particle losses change the output distributions without altering their asymptotic spreading properties. Finally we devise a quantum civilization problem, a two walker generalisation of single particle recurrence processes.
AU - Pegoraro, Federico
AU - Held, Philip
AU - Barkhofen, Sonja
AU - Brecht, Benjamin
AU - Silberhorn, Christine
ID - 42648
IS - 3
JF - Physica Scripta
SN - 0031-8949
TI - Dynamic conditioning of two particle discrete-time quantum walks
VL - 98
ER -
TY - JOUR
AU - Sperling, Jan
AU - Walmsley, I A
ID - 26292
JF - Physica Scripta
SN - 0031-8949
TI - Classical evolution in quantum systems
ER -
TY - JOUR
AU - Sperling, Jan
AU - Vogel, W
ID - 26293
JF - Physica Scripta
SN - 0031-8949
TI - Quasiprobability distributions for quantum-optical coherence and beyond
ER -
TY - JOUR
AU - Kwong, N H
AU - Tsang, C Y
AU - Luk, Samuel M H
AU - Tse, Y C
AU - Chan, Chris K P
AU - Lewandowski, P
AU - Leung, P T
AU - Schumacher, Stefan
AU - Binder, R
ID - 13364
JF - Physica Scripta
SN - 0031-8949
TI - Optical switching of polariton density patterns in a semiconductor microcavity
ER -
TY - JOUR
AU - Kalinko, Aleksandr
AU - Bauer, Matthias
AU - Timoshenko, Janis
AU - Kuzmin, Alexei
ID - 41047
IS - 11
JF - Physica Scripta
KW - Condensed Matter Physics
KW - Mathematical Physics
KW - Atomic and Molecular Physics
KW - and Optics
SN - 0031-8949
TI - Molecular dynamics and reverse Monte Carlo modeling of scheelite-type AWO4(A = Ca, Sr, Ba) WL3-edge EXAFS spectra
VL - 91
ER -
TY - JOUR
AU - Sperling, Jan
AU - Vogel, W
ID - 26334
JF - Physica Scripta
SN - 0031-8949
TI - Convex ordering and quantification of quantumness
ER -
TY - JOUR
AU - Sperling, Jan
AU - Vogel, W
ID - 26358
JF - Physica Scripta
SN - 0031-8949
TI - The Schmidt number as a universal entanglement measure
ER -