Now showing items 1-16 of 16

• #### Coherence and Raman Sideband Cooling of a Single Atom in an Optical Tweezer ﻿

(American Physical Society, 2013)
We investigate quantum control of a single atom in a tightly focused optical tweezer trap. We show that inevitable spatially varying polarization gives rise to significant internal-state decoherence but that this effect ...
• #### Coherent Optical Transitions in Implanted Nitrogen Vacancy Centers ﻿

(American Chemical Society (ACS), 2014)
We report the observation of stable optical transitions in nitrogen-vacancy (NV) centers created by ion implantation. Using a combination of high temperature annealing and subsequent surface treatment, we reproducibly ...
• #### Coherent-Population-Trapping Resonances with Linearly Polarized Light for All-Optical Miniature Atomic Clocks ﻿

(American Physical Society (APS), 2010)
We present a joint theoretical and experimental characterization of the coherent population trapping (CPT) resonance excited on the $D_1$ line of $^{87}Rb$ atoms by bichromatic linearly polarized laser light. We observe ...
• #### Conjugate Fabry–Perot Cavity Pair for Improved Astro-Comb Accuracy ﻿

(Optical Society of America, 2012)
We propose a new astro-comb mode-filtering scheme composed of two Fabry–Perot cavities (coined “conjugate Fabry–Perot cavity pair”). Simulations indicate that this new filtering scheme makes the accuracy of astro-comb ...
• #### 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 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 ...
• #### Efficient All-Optical Switching Using Slow Light within a Hollow Fiber ﻿

(American Physical Society, 2009)
We demonstrate a fiber-optical switch that is activated at tiny energies corresponding to a few hundred optical photons per pulse. This is achieved by simultaneously confining both photons and a small lasercooled ensemble ...
• #### Far-Field Optical Imaging and Manipulation of Individual Spins with Nanoscale Resolution ﻿

(Nature Publishing Group, 2010)
A fundamental limit to existing optical techniques for measurementand manipulation of spin degrees of freedom is set by diffraction, which does not allow spins separated by less than about a quarter of a micrometre to be ...
• #### Free-Standing Mechanical and Photonic Nanostructures in Single-Crystal Diamond ﻿

(American Chemical Society (ACS), 2012)
A variety of nanoscale photonic, mechanical, electronic, and optoelectronic devices require scalable thin film fabrication. Typically, the device layer is defined by thin film deposition on a substrate of a different ...
• #### Indistinguishable Photons from Separated Silicon-Vacancy Centers in Diamond ﻿

(American Physical Society (APS), 2014)
We demonstrate that silicon-vacancy (SiV) centers in diamond can be used to efficiently generate coherent optical photons with excellent spectral properties. We show that these features are due to the inversion symmetry ...
• #### Narrow-Linewidth Homogeneous Optical Emitters in Diamond Nanostructures via Silicon Ion Implantation ﻿

(American Physical Society (APS), 2016)
The negatively-charged silicon-vacancy (SiV−) center in diamond is a bright source of indistinguishable single photons and a useful resource in quantum information protocols. Until now, SiV− centers with narrow optical ...
• #### Quantum entanglement between an optical photon and a solid-state spin qubit ﻿

(Nature Publishing Group, 2010)
Quantum entanglement is among the most fascinating aspects of quantum theory1. Entangled optical photons are now widely used for fundamental tests of quantum mechanics2 and applications such as quantum cryptography1. Several ...
• #### Quantum Interference of Single Photons from Remote Nitrogen-Vacancy Centers in Diamond ﻿

(American Physical Society (APS), 2012)
We demonstrate quantum interference between indistinguishable photons emitted by two nitrogen-vacancy (NV) centers in distinct diamond samples separated by two meters. Macroscopic solid immersion lenses are used to enhance ...
• #### Realization of Coherent Optically Dense Media via Buffer-Gas Cooling ﻿

(American Physical Society, 2009)
We demonstrate that buffer-gas cooling combined with laser ablation can be used to create coherent optical media with high optical depth and low Doppler broadening that offers metastable states with low collisional and ...
• #### Repetitive Readout of a Single Electronic Spin via Quantum Logic with Nuclear Spin Ancillae ﻿

(American Association for the Advancement of Science (AAAS), 2009)
Robust measurement of single quantum bits plays a key role in the realization of quantum computation and communication as well as in quantum metrology and sensing. We have implemented a method for the improved readout of ...
• #### Trapping and Manipulation of Isolated Atoms Using Nanoscale Plasmonic Structures ﻿

(American Physical Society (APS), 2009)
We propose and analyze a scheme to interface individual neutral atoms with nanoscale solid-state systems. The interface is enabled by optically trapping the atom via the strong near-field generated by a sharp metallic ...