Results 91 to 100 of about 251,773 (344)

Hyperfine and Optical Barium Ion Qubits

, 2010
State preparation, qubit rotation, and high fidelity readout are demonstrated for two separate \baseven qubit types. First, an optical qubit on the narrow 6S$_{1/2}$ to 5D$_{5/2}$ transition at 1.76 $\mu$m is implemented.
B. B. Blinov, G. Shu, M. A. Nielsen, M. R. Dietrich, M. R. Dietrich, N. Kurz, T. Noel   +6 more
core   +1 more source

Fast and Robust Geometric Two-Qubit Gates for Superconducting Qubits and beyond [PDF]

, 2023
F. Setiawan, Peter Groszkowski, Aashish A. Clerk   +2 more
openalex   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Hybrid Quantum Noise Model to Compute Gaussian Quantum Channel Capacity

IEEE Access
Quantum information processing leverages the principles of quantum mechanics, utilizing qubits, to improve computational and communicative tasks. In this realm, the quantum channel’s capacity is pivotal in determining the efficiency and accuracy ...
Mouli Chakraborty, Anshu Mukherjee, Avishek Nag, Subhash Chandra   +3 more
doaj   +1 more source

Does the Mott problem extend to Geiger counters?

Open Physics, 2023
The Mott problem is a simpler version of the quantum measurement problem that asks: Is there a microscopic physical mechanism – based (explicitly or implicitly) only on Schroedinger’s equation – that explains why a single alpha particle emitted in a ...
Schonfeld Jonathan F.
doaj   +1 more source

Optimizing the information extracted by a single qubit measurement [PDF]

, 2023
Stefano Polla, Gian-Luca R. Anselmetti, Thomas E. O’Brien   +2 more
openalex   +1 more source

Measurement of a qubit and measurement with a qubit

, 2013
18 pages, 1 figure, 1 table.
openaire   +2 more sources

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Experimental Realization of a Four-Photon Seven-Qubit Graph State for One-Way Quantum Computation

, 2011
We propose and demonstrate the scaling up of photonic graph state through path qubit fusion. Two path qubits from separate two-photon four-qubit states are fused to generate a two-dimensional seven-qubit graph state composed of polarization and path ...
Briegel, Browne, Ceccarelli, Chen, Dong-Hoon Lee, Gao, Gao, Hee Su Park, Heonoh Kim, Huang, Jae Yong Lee, Jaeyoon Cho, Kalasuwan, Kim, Kwiat, Kwiat, Lu, Ma, Nambu, Park, Raussendorf, Sang Min Lee, Sang-Kyung Choi, Tame, Tóth, Tóth, Vallone, Vallone, Yoonshik Kang   +28 more
core   +1 more source

Magnetic‐Field Dependent VB− Spin Decoherence in Hexagonal Boron Nitrides: A First‐Principles Study

Advanced Functional Materials, EarlyView.
This study investigates the decoherence of the VB− defect in h‐BN under external magnetic fields using first‐principles quantum many‐body simulations. A transition boundary distinguishing distinct decoherence regimes is identified, with its dependence on isotopic composition.
Jaewook Lee, Hyeonsu Kim, Huijin Park, Hosung Seo   +3 more
wiley   +1 more source