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Displaying 926 - 950 of 3643

Picosecond-resolution single-photon time lens for temporal mode quantum processing

March 28, 2022
Author(s)
Chaitali Joshi, Ben Sparkes, Alessandro Farsi, Thomas Gerrits, Sae Woo Nam, Varun Verma, Sven Ramelow, Alex Gaeta
… Techniques to control the spectro-temporal properties of quantum states of light at ultrafast time scales are crucial for several applications in quantum information science. In this work, we report an … of single-photons, with applications in temporal mode quantum processing, high-dimensional quantum key …

Chip-integrated visible-telecom entangled photon pair source for quantum communication

January 21, 2019
Author(s)
Xiyuan Lu, Qing Li, Daron Westly, Gregory Moille, Anshuman Singh, Vikas Anant, Kartik Srinivasan
… Photon pair sources are fundamental blocks for quantum entanglement and quantum communication. Recent studies in silicon photonics … spectral brightness, and high photon purity. However, most quantum systems suitable for local operations, such as … visible-telecom entangled photon pair source for quantum communication …

Continuum of Quantum Fluctuations in a Three-Dimensional S = 1 Heisenberg Magnet

January 1, 2019
Author(s)
K. W. Plumb, Hitesh J. Changlani, A. Scheie, Shu Zhang, J. W. Krizan, Jose Rodriguez Rivera, Yiming Qiu, B. Winn, R. J. Cava, Collin L. Broholm
… a broken symmetry and have no order parameter. While the quantum entanglement that characterizes a quantum spin liquid is not directly accessible to any current … lattice may support a three dimensional spin liquid in the quantum limit, but no suitable model system has been examined …

Controlled Exchange Interaction Between Pairs of Neutral Atoms in an Optical Lattice

July 26, 2007
Author(s)
M Anderlini, Patricia J. Lee, Ben L. Brown, Jennifer Sebby-Strabley, William D. Phillips, James V. Porto
… Ultra-cold atoms trapped by light, with their inherent quantum coherence and controllability, provide an attractive system for quantum information and for the simulation of complex problems in condensed matter physics. Quantum information processing requires that individual …

Generation of optical Schrodinger cat states by number-resolved squeezed photon subtraction

July 23, 2010
Author(s)
Thomas Gerrits, Scott C. Glancy, Tracy S. Clement, Brice R. Calkins, Adriana E. Lita, Aaron J. Miller, Alan L. Migdall, Aaron J. Miller, Sae Woo Nam, Richard P. Mirin, Emanuel H. Knill
… was a -0.116 +0.073 -0.019 , a clear indication for the quantum character of the generated cat state. As predicted by … number resolving capabilities are the route to perform quantum information experiments with high generation rates … Quantum Communication, Measurement and Computing (QCMC) …

Entangled matter waves for quantum enhanced sensing

June 18, 2024
Author(s)
John Wilson, Jarrod T. Reilly, HAOQING ZHANG, Chengyi Luo, Anjun Chu, James Thompson, Ana Rey Ayala, MURRAY HOLLAND
… interferometry, metrology, quantum entanglement, squeezing … Entangled matter waves for quantum enhanced sensing …

Validation of SplitVector Encoding and Stereoscopy for Visualizing Quantum Physics Data in Virtual Environments

April 9, 2015
Author(s)
Wesley N. Griffin, Judith E. Terrill, Garnett W. Bryant, Jian Chen, Henan Zhao
… ratio tasks), for real-world large dynamic range data in quantum physics simulations. SplitVector uses scientific … ¿eld, scienti¿c visualization in virtual environments, quantum physics, visual encoding, large dynamic range data … of SplitVector Encoding and Stereoscopy for Visualizing Quantum Physics Data in Virtual Environments …

Carrier Dynamics and Homogeneous Broadening in Quantum Dot Waveguides

January 1, 2005
Author(s)
Kevin L. Silverman, Richard P. Mirin, Steven T. Cundiff, Benjamin Klein,
… Coupling between InGaAs/GaAs quantum dots is investigated using differential transmission … resolve the carrier dynamics, revealing transfer between quantum dots and a homogeneous linewidth of 12 nm at room … Carrier Dynamics and Homogeneous Broadening in Quantum Dot Waveguides …

Photonic Technology for Quantum Information Processing

January 1, 2004
Author(s)
P K. Kumar, Alan L. Migdall, S Nam, Jelena Vuckovic, F N. Wong
… J Quan Inform Proces Spec Quantum Computing Exper Perspec 3 … Photonic Technology for Quantum Information Processing …

Injection-level-dependent internal quantum efficiency and lasing in low-defect GaN nanowires

February 28, 2011
Author(s)
John B. Schlager, Norman A. Sanford, Kristine A. Bertness, Alexana Roshko
… GaN nanowires revealed PL lifetimes and values of internal quantum efficiency (IQE) that increased with excitation … nanowires, photoluminescence, semiconductor quantum wires, time resolved spectra, wide band gap … Injection-level-dependent internal quantum efficiency and lasing in low-defect GaN nanowires …

Flux-tunable phase shifter for microwaves

November 7, 2017
Author(s)
Roope J. Kokkoniemi, Tuomas Ollikainen, Sakari Saarenpaa, Janne Kokkala, Ceren Dag, Mikko Mottonen, Russell Lake
… photons, based on three equidistant superconducting quantum interference devices (SQUIDs) on a transmission line. … and hence assist in the pursuit of an all-microwave quantum computer based on propagating photons. … quantum information, microwave photons …

Perfect cheating is impossible for single-qubit position verification

June 28, 2024
Author(s)
Carl A. Miller, Yusuf Alnawakhtha
… In quantum position verification, a prover certifies her location by performing a quantum computation and returning the results (at the speed … of trusted verifiers. One of the very first protocols for quantum position verification was proposed in (Kent, Munro, …

Measurement-induced decoherence and information in double-slit interference

July 20, 2016
Author(s)
Joshua Kincaid, Kyle McLelland, Michael P. Zwolak
… of both interference and the effect of observation in quantum physics. When particles are sent individually through … account of measurement in this paradigmatic example of quantum physics that is accessible to students taking quantum mechanics at the graduate or senior undergraduate …

Possible hundredfold enhancement in the direct magnetic coupling of a single-atom electron spin to a circuit resonator

January 2, 2019
Author(s)
Bahman Sarabi, Peihao Huang, Neil M. Zimmerman
… in the single photon regime. For this truly linear cavity quantum electrodynamic system, such enhancement in g is … (lossy) dielectrics for the construction of qubits and quantum memory bits, and for the coupling of distant qubits. … Circuit quantum electrodynamics, Spin qubits, Superconducting …

Blackbody Radiation Noise Broadening of Quantum Systems

April 22, 2021
Author(s)
Eric B. Norrgard, Stephen Eckel, Christopher L. Holloway, Eric L. Shirley
… Precision measurements of quantum systems often seek to probe or must account for the … leads to a parametric broadening of the energy levels of quantum systems that is inversely proportional to the … Blackbody Radiation Noise Broadening of Quantum Systems …

Onset of Fermi Degeneracy in a Trapped Atomic Gas

September 1, 1999
Author(s)
B. L. DeMarco, Deborah S. Jin
… zero at high temperatures to nearly 60 percent, quantum degeneracy was observed as a barrier to evaporative … energy of the confined Fermi gas directly revealed the quantum statistics. … quantum degenerate gases, trapping and cooling …

Enhanced Quantum State Detection Efficiency Through Quantum Information Processing

October 1, 2005
Author(s)
T Schaetz, M D. Barrett, D. Leibfried, J. Britton, J. Chiaverini, W M. Itano, J. D. Jost, Emanuel Knill, C. Langer, David J. Wineland
… form and so do not change the concurrence. Hence for a quantum computation v=k1 a k2, analysis of a in e A allows … in terms of a time-reversal symmetry operator, namely the quantum bit flip |?> ? (-i sy) (x)n | ?*> . In this context, … Enhanced Quantum State Detection Efficiency Through Quantum …

Achieving Higher Photon Counting Rates Using Multiplexed Detectors

August 13, 2006
Author(s)
Stefania Castelletto, Ivo P. Degiovanni, Alan L. Migdall, Sergey Polyakov, V Schettini
… As the quantum information field advances, the need for improved single-photon devices is becoming more critical. Quantum information systems are often limited by detector … deadtime, detector, photon counting, quantum computing, quantum cryptography, single photon …

Quantum Hall effect on centimeter scale chemical vapor deposited graphene films

December 7, 2011
Author(s)
Tian T. Shen, Wei Wu, Qingkai Yu, Curt A. Richter, Randolph E. Elmquist, David B. Newell, Yong P. Chen
… We report observations of well developed half integer quantum Hall effect on mono layer graphene films of … demonstrated in this work is promising for graphene-based quantum Hall resistance standards and can also facilitate a wide range of experiments on quantum Hall physics of graphene and practical applications …

Recognizing Small Circuit Structure in Two-Qubit Operators

March 20, 2003
Author(s)
V V. Shende, Stephen Bullock, I L. Markov
… numerical tests which determine whether a two-qubit quantum computation has an atypically simple quantum circuit. Specifically, we describe forumulae, written … Vidal and Dawson, and Shende et al. In these works, small quantum circuits are achieved for arbitrary two-qubit …

Measurement of the Fluorescence Quantum Yield Using a Spectrometer With an Integrating Sphere Detector

January 1, 2008
Author(s)
Adolfas K. Gaigalas, Lili Wang
… A method is proposed for measuring the fluorescence quantum yield (QY) using a commercial spectrophotometer with … absorbance measurements. It is shown that the fluorescence quantum yield can be obtained from a combination of … a convenient and rapid estimate of the fluorescence quantum yield. Refinements of the measurement model and the …
Displaying 926 - 950 of 3643
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