Results 151 to 160 of about 5,384,290 (367)
Advanced Functional Materials, EarlyView.Photodetectors made using perovskite single crystals in combination with free‐standing cholesteric liquid crystal (CLC) polymer films exhibit photocurrent dissymmetry factors up to 1.95 for 520 nm circularly polarized light (CPL) excitation. The CPL spectral response of the photodetector is tunable over a broad range of wavelengths by tuning the ...
Yifan Feng +9 more
wiley +1 more source
Programmable high-dimensional Hamiltonian in a photonic waveguide array
Nature CommunicationsWaveguide lattices offer a compact and stable platform for a range of applications, including quantum walks, condensed matter system simulation, and classical and quantum information processing.
Yang Yang +6 more
doaj +1 more source
Inter‐Layer Diffusion of Excitations in 2D Perovskites Revealed by Photoluminescence Reabsorption
Advanced Functional Materials, EarlyView.Inter‐layer diffusion of photoexcitations is monitored in thin films of the 2D perovskite (PEA)2PbI4 by tracking time‐dependent changes in photoluminescence spectra induced by photon reabsorption effects. A low out‐of‐plane excitation diffusion coefficient of 0.26 × 10−4 cm2 s−1 is determined through 1D diffusion modeling.
Jiaxing Du +7 more
wiley +1 more source
Quantum key distribution without sending a quantum signal
New Journal of Physics, 2015 Quantum Key Distribution is a quantum communication technique in which random numbers are encoded on quantum systems, usually photons, and sent from one party, Alice, to another, Bob. Using the data sent via the quantum signals, supplemented by classical
T C Ralph, N Walk
doaj +1 more source
Quantum Dynamics in Open Quantum-Classical Systems [PDF]
arXiv, 2016 Often quantum systems are not isolated and interactions with their environments must be taken into account. In such open quantum systems these environmental interactions can lead to decoherence and dissipation, which have a marked influence on the properties of the quantum system.
arxiv
Quantum Operation Time Reversal
, 2007 The dynamics of an open quantum system can be described by a quantum operation, a linear, complete positive map of operators. Here, I exhibit a compact expression for the time reversal of a quantum operation, which is closely analogous to the time ...
Gavin E. Crooks +4 more
core +1 more source
Biointerfacing with AgBiS2 Quantum Dots for Pseudocapacitive Photostimulation
Advanced Functional Materials, EarlyView.It is demonstrated that AgBiS2 quantum dots exhibit unique photoinduced pseudocapacitive charge transfer properties, enabling efficient light‐to‐electrical energy conversion. These quantum dots facilitate enhanced light absorption and transduction when integrated with ZnO nanowires, which serve as an effective charge transport medium.
Ridvan Balamur +8 more
wiley +1 more source
New Journal of Physics, 2015 The preparation stage of optical qubits is an essential task in all the experimental setups employed for the test and demonstration of quantum optics principles.
Nicola Dalla Pozza +2 more
doaj +1 more source
Reversing quantum dynamics with near-optimal quantum and classical fidelity [PDF]
arXiv, 2000 We consider the problem of reversing quantum dynamics, with the goal of preserving an initial state's quantum entanglement or classical correlation with a reference system. We exhibit an approximate reversal operation, adapted to the initial density operator and the ``noise'' dynamics to be reversed.
arxiv
Dissipative quantum chaos: transition from wave packet collapse to explosion
, 2005 Using the quantum trajectories approach we study the quantum dynamics of a dissipative chaotic system described by the Zaslavsky map. For strong dissipation the quantum wave function in the phase space collapses onto a compact packet which follows ...
A. J. Lichtenberg +12 more
core +1 more source