Results 31 to 40 of about 19,683 (177)

Wigner distribution of twisted photons [PDF]

, 2015
We present the first experimental characterization of the azimuthal Wigner distribution of a photon. Our protocol fully characterizes the transverse structure of a photon in conjugate bases of orbital angular momentum (OAM) and azimuthal angle (ANG).
Boyd, Robert W., Chen, Changchen, Magaña-Loaiza, Omar, Mirhosseini, Mohammad, Rafsanjani, Seyed Mohammad Hashemi   +4 more
core   +4 more sources

Scrambling‐Enhanced Quantum Battery Charging in Black Hole Analogues

Advanced Science, EarlyView.
By employing a black‐hole‐analog quantum battery constructed from a position‐dependent XY model, its dynamical behavior is investigated through a quench of the scrambling parameter. It is systematically quantified that how the simulated scrambling improves key performance metrics‐namely, stored energy, peak power, and charging time‐thereby offering a ...
Zhilong Liu, Ying Li, Zehua Tian, Jieci Wang   +3 more
wiley   +1 more source

Quasi-probability representations of quantum theory with applications to quantum information science

, 2011
This article comprises a review of both the quasi-probability representations of infinite-dimensional quantum theory (including the Wigner function) and the more recently defined quasi-probability representations of finite-dimensional quantum theory.
Alicki R, Alicki R, Beltrametti E G, Bohm D, Cereceda J L, Chaturvedi S, Christensen O, Christopher Ferrie, Cohendet O, Cohendet O, Combescure M, Datta A, Ferrie C, Ferrie C, Feynman R P, Franco R, Fuchs C A, Fuchs C A, Fuchs C A Schack R, Giraud O Braun P A Braun D, Gottesman D, Hakioglu T, Hardy L, Hardy L, Harrigan N Rudolph T, Husimi K, Isham C, Ivonovic I D, Joos E, Kalmykov Y P, Kenfack A, Kochen S, Laflamme R, Livine E R, Luis A, Mandel L, Mari A Kieling K Nielsen B M Polzik E S Eisert J, Morris R, Nielsen M A, Porta Mana P G L, Porta Mana P G L, Porta Mana P G L, Redhead M, Ruzzi M, Schack R, Scott A J, Shepherd D, Shor P W, Stratonovich R L, Vourdas A, Walls D F, Zauner G, Zueco D   +52 more
core   +1 more source

Comparison of DeePMD, MTP, GAP, ACE and MACE Machine‐Learned Potentials for Radiation‐Damage Simulations: A User Perspective

Advanced Intelligent Discovery, EarlyView.
The authors evaluated six machine‐learned interatomic potentials for simulating threshold displacement energies and tritium diffusion in LiAlO2 essential for tritium production. Trained on the same density functional theory data and benchmarked against traditional models for accuracy, stability, displacement energies, and cost, Moment Tensor Potential ...
Ankit Roy, Ram Devanathan, Sarah Allec, Giridhar Nandipati, Andrew M. Casella, David J. Senor, Duane D. Johnson, Ganesh Balasubramanian, Ayoub Soulami   +8 more
wiley   +1 more source

Discrete Wigner functions and the phase space representation of quantum teleportation

, 2002
We present a phase space description of the process of quantum teleportation for a system with an $N$ dimensional space of states. For this purpose we define a discrete Wigner function which is a minor variation of previously existing ones. This function
A. Bouzouina, A. Einstein, A. Furusawa, A. Rivas, C. H. Bennett, C. Miquel, D. Bouwmeester, D. Gottesman, D. Leibfried, D. Leibfried, G. Nogues, J. H. Hannay, J. Schwinger, J. Schwinger, Juan Pablo Paz, L. G. Lutterbach, L. G. Lutterbach, L. Lvovsky, L. Vaidman, M. Hillery, M. Koniorczyk, S. L. Braunstein, T. J. Dunn, U. Leonhardt, U. Leonhardt, W. K. Wootters   +25 more
core   +1 more source

Synthetic Electrocardiogram Spectrogram Generation Using Generative Adversarial Network‐Based Models: A Comparative Study

Advanced Intelligent Systems, EarlyView.
Cardiovascular diseases are leading death causes; electrocardiogram (ECG) analysis is slow, motivating machine learning and deep learning. This study compares deep convolutional generative adversarial network, conditional GAN, and Wasserstein GAN with gradient penalty (WGAN‐GP) for synthetic ECG spectrograms; Fréchet Inception Distance (FID) and ...
Giovanny Barbosa‐Casanova, Norelli Schettini, Winston Percybrooks, Begoña García‐Zapirain   +3 more
wiley   +1 more source

Signatures of Random Matrix Theory in the Discrete Energy Spectra of Subnanosize Metallic Clusters

, 2007
Lead clusters deposited on Si(111) substrates have been studied at low temperatures using scanning tunneling microscopy and spectroscopy. The current-voltage characteristics exhibit current peaks that are irregularly spaced and varied in height.
A. M. Goldman, B. W. Lang, C. E. Porter, C. Kittel, C. M. Marcus, L. L. A. Adams, M. L. Mehta, Wigner, Yu Chen   +8 more
core   +1 more source

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, EarlyView.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Wigner distributions for finite dimensional quantum systems: An algebraic approach [PDF]

, 2005
We discuss questions pertaining to the definition of `momentum', `momentum space', `phase space', and `Wigner distributions'; for finite dimensional quantum systems.
Chaturvedi, S., Ercolessi, E., Marmo, G., Morandi, G., Mukunda, N., Simon, R.   +5 more
core   +3 more sources

Magnetic Dynamics and Elongated Coherence of a High‐Spin Mn(II) Qubit Doped into a Metal‐Organic Framework

Chemistry – A European Journal, EarlyView.
This study demonstrates that dilute Mn(II) (∼0.02 mol%) doped into the Zn(II)‐MOF [CH6N3][Zn(HCOO)3] act as high‐spin (S = 5/2) spin qubits, achieving microsecond phase memory times above 50 K—the first report for Mn(II)‐based systems. Robust hydrogen‐bonding networks suppress relaxation and stabilize the lattice, extending T2.
Shraddha Gupta, Masanori Wakizaka, Takeshi Yamane, Hisaaki Tanaka, Ryuta Ishikawa, Shinya Takaishi, Kazunobu Sato, Masahiro Yamashita   +7 more
wiley   +1 more source