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Cooling the Center-of-Mass Motion of a Diamond Nanocrystal in a Magneto-Gravitational Trap

Hsu, Jen-Feng (2016) Cooling the Center-of-Mass Motion of a Diamond Nanocrystal in a Magneto-Gravitational Trap. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Abstract

A magneto-gravitational trap for micro/nanometer sized diamagnetic particles, such as diamond nanocrystals, is tested and characterized. After exploring various other systems, such as a suspended graphene beam and an optical trap, this magneto-gravitational nanomechanical trapping system for diamond with nitrogen-vacancy (NV) centers presents unique advantages for experiments in fundamental quantum mechanics. Those include, for example, the generation of large quantum superposition states and tests of quantum gravity. Features are demonstrated for this system, such as stable and passive levitation from atmospheric pressure to high vacuum, low resonant frequencies and damping rates, and cooling of the center-of-mass motions to below 1 K. The construction of the trap, vacuum system, optics, and motion detection electronics are described in detail.

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Details

Item Type: University of Pittsburgh ETD
Status: Unpublished
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Hsu, Jen-Fengjeh114@pitt.eduJEH1140000-0001-6027-5987
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairD'Urso, Briandursobr@pitt.eduDURSOBR
Committee MemberDaley, Andrewandrew.daley@strath.ac.uk
Committee Memberde Boer, Maartenmpdebo@andrew.cmu.edu
Committee MemberDutt, Gurudevgdutt@pitt.eduGDUTT
Committee MemberWood-Vasey, Michaelwmwv@pitt.eduWMWV
Date: 29 September 2016
Date Type: Publication
Defense Date: 29 July 2016
Approval Date: 29 September 2016
Submission Date: 1 May 2016
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 175
Institution: University of Pittsburgh
Schools and Programs: Dietrich School of Arts and Sciences > Physics
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Magnetic trapping, nanomechanical oscillator, feedback cooling, quantum ground state, and diamond nanocrystal
Date Deposited: 30 Sep 2016 02:17
Last Modified: 15 Nov 2016 14:35
URI: http://d-scholarship.pitt.edu/id/eprint/29178

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  • Cooling the Center-of-Mass Motion of a Diamond Nanocrystal in a Magneto-Gravitational Trap. (deposited 30 Sep 2016 02:17) [Currently Displayed]

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