Now showing items 21-40 of 182

• #### Continuous mode cooling and phonon routers for phononic quantum networks ﻿

(Institute of Physics, 2012)
We study the implementation of quantum state transfer protocols in phonon networks, where in analogy to optical networks, quantum information is transmitted through propagating phonons in extended mechanical resonator ...
• #### Controlled Preparation and Detection of d-Wave Superfluidity in Two-Dimensional Optical Superlattices ﻿

(Institute of Physics, 2009)
$d$-wave Cooper pairs are believed to be the key for understanding the phenomenon of high-temperature superconductivity in cuprates. These superconductors are an example of the emergence of strong pairing in systems with ...
• #### Controlling Atomic, Solid-State and Hybrid Systems for Quantum Information Processing ﻿

(2013-10-18)
Quantum information science involves the use of precise control over quantum systems to explore new technologies. However, as quantum systems are scaled up they require an ever deeper understanding of many-body physics ...
• #### Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices ﻿

(American Physical Society (APS), 2003)
We describe a general technique that allows one to induce and control strong interaction between spin states of neighboring atoms in an optical lattice. We show that the properties of spin exchange interactions, such as ...
• #### Coulomb Bound States of Strongly Interacting Photons ﻿

(American Physical Society (APS), 2015)
We show that two photons coupled to Rydberg states via electromagnetically induced transparency can interact via an effective Coulomb potential. This interaction gives rise to a continuum of two-body bound states. Within ...
• #### Coupled Spins in Diamond: From Quantum Control to Metrology and Many-Body Physics ﻿

(2016-05-16)
The study of quantum mechanics, together with the ability to coherently control and manipulate quantum systems in the lab has led to a myriad of discoveries and real world applications. In this thesis we present experiments ...
• #### Coupling a Single Trapped Atom to a Nanoscale Optical Cavity ﻿

(American Association for the Advancement of Science (AAAS), 2013)
Hybrid quantum devices, in which dissimilar quantum systems are combined in order to attain qualities not available with either system alone, may enable far-reaching control in quantum measurement, sensing, and information ...
• #### Coupling Nitrogen-Vacancy Centers in Diamond in Superconducting Flux Qubits ﻿

(The American Physical Society, 2010)
We propose a method to achieve coherent coupling between nitrogen-vacancy (NV) centers in diamond and superconducting (SC) flux qubits. The resulting coupling can be used to create a coherent interaction between the spin ...
• #### Coupling of NV Centers to Photonic Crystal Nanobeams in Diamond ﻿

(American Chemical Society (ACS), 2013)
The realization of efficient optical interfaces for solid-state atom-like systems is an important problem in quantum science with potential applications in quantum communications and quantum information processing. We ...
• #### Cross Modulation of Two Laser Beams at the Individual-Photon Level ﻿

(American Physical Society (APS), 2014)
Deterministic photon-photon interactions are a long-standing goal in optical science. Using an atomic ensemble inside a cavity, we demonstrate the mutual cross modulation of two continuous light beams at the level of ...
• #### Decay of superfluid currents in a moving system of strongly interacting bosons ﻿

(American Physical Society (APS), 2005)
We analyze the stability and decay of supercurrents of strongly interacting bosons on optical lattices. At the mean-field level, the system undergoes an irreversible dynamic phase transition, whereby the current decays ...
• #### Decoherence Dynamics in Low-Dimensional Cold Atom Interferometers ﻿

(American Physical Society (APS), 2007)
We report on a study of the dynamics of decoherence of a matter-wave interferometer, consisting of a pair of low-dimensional cold atom condensates at finite temperature. We identify two distinct regimes in the time dependence ...
• #### Deterministic Coupling of a Single Nitrogen Vacancy Center to a Photonic Crystal Cavity ﻿

(American Chemical Society, 2010)
We describe and experimentally demonstrate a technique for deterministic, large coupling between a photonic crystal (PC) nanocavity and single photon emitters. The technique is based on in situ scanning of a PC cavity over ...
• #### Diamond optomechanical crystals ﻿

(The Optical Society, 2016)
Cavity-optomechanical systems realized in single-crystal diamond are poised to benefit from its extraordinary material properties, including low mechanical dissipation and wide optical transparency window. Diamond is also ...
• #### Diamond platforms for nanoscale photonics and metrology ﻿

(2014-06-06)
Observing and controlling solid state quantum systems is an area of intense research in quantum science today. Such systems offer the natural advantage of being bound into a solid device, eliminating the need for laser ...
• #### Disordered Bose-Einstein Condensates in Quasi-One-Dimensional Magnetic Microtraps ﻿

(American Physical Society (APS), 2004)
We analyze the effects of a random magnetic potential in a microfabricated waveguide for ultracold atoms. We find that the shape and position fluctuations of a current carrying wire induce a strong Gaussian correlated ...
• #### Dissipative phase transition in a central spin system ﻿

(American Physical Society (APS), 2012)
We investigate dissipative phase transitions in an open central spin system. In our model the central spin interacts coherently with the surrounding many-particle spin environment and is subject to coherent driving and ...
• #### Dissipative Preparation of Spin Squeezed Atomic Ensembles in a Steady State ﻿

(American Physical Society (APS), 2013)
We present and analyze a new approach for the generation of atomic spin-squeezed states. Our method involves the collective coupling of an atomic ensemble to a decaying mode of an open optical cavity. We demonstrate the ...
• #### Double Quantum Dots in Carbon Nanotubes ﻿

(American Physical Society, 2010)
We study the two-electron eigenspectrum of a carbon-nanotube double quantum dot with spin-orbit coupling. Exact calculations are combined with a simple model to provide an intuitive and accurate description of single-particle ...
• #### Dynamic Nuclear Polarization in Double Quantum Dots ﻿

(American Physical Society, 2010)
We theoretically investigate the controlled dynamic polarization of lattice nuclear spins in GaAs double quantum dots containing two electrons. Three regimes of long-term dynamics are identiﬁed, including the buildup of ...