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 -