+publisher:"University of Colorado" +contributor:("Cindy Regal")

University of Colorado

1. McGee, Sarah A. Using Mechanical Oscillators for Transduction and Memory of Quantum States.

Degree: PhD, Physics, 2012, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/68

► We study an optomechanical system in which a microwave field and an optical field are coupled to the same mechanical oscillator. We explore the… (more)

Subjects/Keywords: electromechanics; Heisenberg interferometer; nanomechanical resonator; optomechanics; quantum memory; quantum transduction; Optics; Physics; Quantum Physics

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APA (6^th Edition):

McGee, S. A. (2012). Using Mechanical Oscillators for Transduction and Memory of Quantum States. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/68

Chicago Manual of Style (16^th Edition):

McGee, Sarah A. “Using Mechanical Oscillators for Transduction and Memory of Quantum States.” 2012. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/68.

MLA Handbook (7^th Edition):

McGee, Sarah A. “Using Mechanical Oscillators for Transduction and Memory of Quantum States.” 2012. Web. 02 Mar 2021.

Vancouver:

McGee SA. Using Mechanical Oscillators for Transduction and Memory of Quantum States. [Internet] [Doctoral dissertation]. University of Colorado; 2012. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/68.

Council of Science Editors:

McGee SA. Using Mechanical Oscillators for Transduction and Memory of Quantum States. [Doctoral Dissertation]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/phys_gradetds/68

University of Colorado

2. Montague, Joshua R. As-Grown Gallium Nitride Nanowire Electromechanical Resonators.

Degree: PhD, Physics, 2013, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/74

► Technological development in recent years has led to a ubiquity of micro- and nano-scale electromechanical devices. Sensors for monitoring temperature, pressure, mass, etc., are… (more)

▼ Technological development in recent years has led to a ubiquity of micro- and nano-scale electromechanical devices. Sensors for monitoring temperature, pressure, mass, etc., are now found in nearly all electronic devices at both the industrial and consumer levels. As has been true for integrated circuit electronics, these electromechanical devices have continued to be scaled down in size. For many nanometer-scale structures with large surface-to-volume ratio, dissipation (energy loss) becomes prohibitively large causing a decreasing sensitivity with decreasing sensor size. In this work, gallium nitride (GaN) nanowires are investigated as singly-clamped (cantilever) mechanical resonators with typical mechanical quality factors, Q (equal to the ratio of resonance frequency to peak full-width-at-half-maximum-power) and resonance frequencies, respectively, at or above 30,000, and near 1 MHz. These Q values {in vacuum at room temperature{ indicate very low levels of dissipation; they are essentially the same as those for bulk quartz crystal resonators that form the basis of simple clocks and mass sensors. The GaN nanowires have lengths and diameters, respectively, of approximately 15 micrometers and hundreds of nanometers. As-grown GaN nanowire Q values are larger than other similarly-sized, bottom-up, cantilever resonators and this property makes them very attractive for use as resonant sensors. We demonstrate the capability of detecting sub-monolayer levels of atomic layer deposited (ALD) films, and the robust nature of the GaN nanowires structure that allows for their 'reuse' after removal of such layers. In addition to electron microscope-based measurement techniques, we demonstrate the successful capacitive detection of a single nanowire using microwave homodyne reflectometry. This technique is then extended to allow for simultaneous measurements of large ensembles of GaN nanowires on a single sample, providing statistical information about the distribution of individual nanowire properties. We observe nanowire-to-nanowire variations in the temperature dependence of GaN nanowire resonance frequency and in the observed mechanical dissipation. We also use this ensemble measurement technique to demonstrate unique, very low-loss resonance behavior at low temperatures. The low dissipation (and corresponding large Q values) observed in as-grown GaN nanowires also provides a unique opportunity for studying fundamental energy loss mechanisms in nano-scale objects. With estimated mass sensitivities on the level of zeptograms (10^-²¹ g) in a one second averaging time, GaN nanowires may be a significant addition to the field of resonant sensors and worthy of future research and device integration. Advisors/Committee Members: Charles Rogers, Victor M. Bright, Cindy Regal, Kyle McElroy, Daniel Dessau.

Subjects/Keywords: dissipation; gallium nitride; mems; nanowire; resonator; Physics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Montague, J. R. (2013). As-Grown Gallium Nitride Nanowire Electromechanical Resonators. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/74

Chicago Manual of Style (16^th Edition):

Montague, Joshua R. “As-Grown Gallium Nitride Nanowire Electromechanical Resonators.” 2013. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/74.

MLA Handbook (7^th Edition):

Montague, Joshua R. “As-Grown Gallium Nitride Nanowire Electromechanical Resonators.” 2013. Web. 02 Mar 2021.

Vancouver:

Montague JR. As-Grown Gallium Nitride Nanowire Electromechanical Resonators. [Internet] [Doctoral dissertation]. University of Colorado; 2013. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/74.

Council of Science Editors:

Montague JR. As-Grown Gallium Nitride Nanowire Electromechanical Resonators. [Doctoral Dissertation]. University of Colorado; 2013. Available from: https://scholar.colorado.edu/phys_gradetds/74

University of Colorado

3. Sankar, Shannon Reynier. Approaching broadband quantum-limited displacement noise in a deformable optical cavity.

Degree: PhD, Physics, 2012, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/82

► An outstanding goal of the optomechanics community, particularly in the field of gravitational wave detection, is to demonstrate a system with a broadband displacement… (more)

Subjects/Keywords: LIGO; optomechanics; quantum displacement noise; radiation pressure; Optics; Physics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sankar, S. R. (2012). Approaching broadband quantum-limited displacement noise in a deformable optical cavity. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/82

Chicago Manual of Style (16^th Edition):

Sankar, Shannon Reynier. “Approaching broadband quantum-limited displacement noise in a deformable optical cavity.” 2012. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/82.

MLA Handbook (7^th Edition):

Sankar, Shannon Reynier. “Approaching broadband quantum-limited displacement noise in a deformable optical cavity.” 2012. Web. 02 Mar 2021.

Vancouver:

Sankar SR. Approaching broadband quantum-limited displacement noise in a deformable optical cavity. [Internet] [Doctoral dissertation]. University of Colorado; 2012. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/82.

Council of Science Editors:

Sankar SR. Approaching broadband quantum-limited displacement noise in a deformable optical cavity. [Doctoral Dissertation]. University of Colorado; 2012. Available from: https://scholar.colorado.edu/phys_gradetds/82

University of Colorado

4. Campbell, Sara L. A Fermi-Degenerate Three-Dimensional Optical Lattice Clock.

Degree: PhD, Physics, 2017, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/214

► Strontium optical lattice clocks have the potential to simultaneously interrogate millions of atoms with a spectroscopic quality factor Q = 4 x 10 ¹⁷. Previously,… (more)

Subjects/Keywords: 3D optical lattice; atomic clock; degenerate Fermi gas; optical lattice clock; precision metrology; quantum gases; Atomic, Molecular and Optical Physics; Physics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Campbell, S. L. (2017). A Fermi-Degenerate Three-Dimensional Optical Lattice Clock. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/214

Chicago Manual of Style (16^th Edition):

Campbell, Sara L. “A Fermi-Degenerate Three-Dimensional Optical Lattice Clock.” 2017. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/214.

MLA Handbook (7^th Edition):

Campbell, Sara L. “A Fermi-Degenerate Three-Dimensional Optical Lattice Clock.” 2017. Web. 02 Mar 2021.

Vancouver:

Campbell SL. A Fermi-Degenerate Three-Dimensional Optical Lattice Clock. [Internet] [Doctoral dissertation]. University of Colorado; 2017. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/214.

Council of Science Editors:

Campbell SL. A Fermi-Degenerate Three-Dimensional Optical Lattice Clock. [Doctoral Dissertation]. University of Colorado; 2017. Available from: https://scholar.colorado.edu/phys_gradetds/214

University of Colorado

5. Bowler, Ryan. Coherent Ion Transport in a Multi-electrode Trap Array.

Degree: PhD, Physics, 2014, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/130

► Quantum information processors are predicted to enable a significant speedup in solving certain classes of problems compared to their classical counterparts. For one scheme… (more)

Subjects/Keywords: computation; ion; quantum; transport; Atomic, Molecular and Optical Physics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bowler, R. (2014). Coherent Ion Transport in a Multi-electrode Trap Array. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/130

Chicago Manual of Style (16^th Edition):

Bowler, Ryan. “Coherent Ion Transport in a Multi-electrode Trap Array.” 2014. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/130.

MLA Handbook (7^th Edition):

Bowler, Ryan. “Coherent Ion Transport in a Multi-electrode Trap Array.” 2014. Web. 02 Mar 2021.

Vancouver:

Bowler R. Coherent Ion Transport in a Multi-electrode Trap Array. [Internet] [Doctoral dissertation]. University of Colorado; 2014. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/130.

Council of Science Editors:

Bowler R. Coherent Ion Transport in a Multi-electrode Trap Array. [Doctoral Dissertation]. University of Colorado; 2014. Available from: https://scholar.colorado.edu/phys_gradetds/130

University of Colorado

6. Lin, Yiheng. Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods.

Degree: PhD, Physics, 2015, University of Colorado

URL: https://scholar.colorado.edu/phys_gradetds/150

► Entangled states are a key resource in fundamental quantum physics, quantum cryptography, and quantum computation. In this thesis, we focus on the demonstrations of… (more)

Subjects/Keywords: open quantum system; quantum computing; quantum entanglement; quantum information; quantum optics; trapped ion experiment; Atomic, Molecular and Optical Physics; Optics; Quantum Physics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Lin, Y. (2015). Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/phys_gradetds/150

Chicago Manual of Style (16^th Edition):

Lin, Yiheng. “Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods.” 2015. Doctoral Dissertation, University of Colorado. Accessed March 02, 2021. https://scholar.colorado.edu/phys_gradetds/150.

MLA Handbook (7^th Edition):

Lin, Yiheng. “Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods.” 2015. Web. 02 Mar 2021.

Vancouver:

Lin Y. Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods. [Internet] [Doctoral dissertation]. University of Colorado; 2015. [cited 2021 Mar 02]. Available from: https://scholar.colorado.edu/phys_gradetds/150.

Council of Science Editors:

Lin Y. Quantum Entanglement Generation in Trapped Ions Using Coherent and Dissipative Methods. [Doctoral Dissertation]. University of Colorado; 2015. Available from: https://scholar.colorado.edu/phys_gradetds/150

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