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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 92 for “"Optical cavity"”.
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Optical cavity integrated surface ion trap for enhanced light collection
… be realized by integrating an ion trap with an optical cavity and employing the Purcell effect for enhancing the light collection. Remote entanglement can be used as a resource for a quantum repeater for provably secure long-distance communication or as a method for communicating within a …
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Preliminary investigation on optical cavity-based biosensor using double-sided tape.
… Our team has developed a foundational optical cavity-based biosensor capable of biomarker detection using low-cost fabrication methods, components, and a differential detection method. This biosensor laid the foundation for the creation of a double-sided tape-based biosensor to make …
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Exploring Novel Quantum Physics Using Ytterbium-171 in An Optical Cavity
In this thesis, I present the development of a cavity quantum electrodynamics (CQED) system using single or multiple ensembles of ytterbium-171 atoms and its use for quantum metrology and quantum information science investigations. We develop and study a unified theoretical framework that describes …
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Continuous detuning of an optical cavity with a Universally Tunable Modulator
It is currently well-known how to lock an optical cavity on resonance using the Pound- Drever-Hall technique. It is also possible to lock a cavity at a single detuned length using an amplitude modulated laser beam. However, there are many interesting applications, that would benefit from the use of …
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Generation and Measurement of Entangled Atomic Ensembles with an Optical Cavity
… shift of the resonance frequency of an optical cavity containing the ensemble. The second experiment generates entangled states of 3,000 atoms with non-Gaussian spin distributions. Atoms interact with a weak cavity field, and the heralded detection of a single photon with certain …
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Development of an optical cavity-based biosensor for point-of-care diagnostics.
An optical cavity-based biosensor (OCB) has been developed using a differential detection method towards point-of-care (POC) diagnostic applications. The optical cavity consisting of two partially reflective surfaces with a small gap was designed and optimized using a simulation tool, …
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A photon-photon interface with an atomic ensemble in an optical cavity
… Here, I demonstrate four such devices for optical photons traveling in two different modes: an all-optical switch and transistor, a nondestructive photon detector, a phase shifter, and a quantum state generator. These devices rely on a nonlinear optical interface comprised of a few thousand …
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Progress towards strong coupling between collisionally blockaded atoms and an optical cavity
… implementation, and control of a high finesse cavity overlapped with a 2pm dipole trap. The use of a relatively long (14mm) cavity grants good optical access, permitting the implementation of a dipole trap centered on the cavity, and small enough to capture only a single atom in the collisional …
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Stochastic dynamics and fluctuation theorems in Brownian, feedback-controlled, and optical cavity systems
… relations. Furthermore, fluctuation theorems in optical cavity dynamics are examined. In particular, fluctuation theorems are derived for quantities analogous to total entropy production, housekeeping heat, and non-autonomous work in coherently driven nonlinear optical cavity systems. In the …
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Silicon based photonic crystal coupled to an optical cavity for highly sensitive biodetection
… of a silicon based PC coupled to an optical cavity. Compared to an ordinary PC without coupled optical cavity, the new PC can further increase fluorescent output via stronger evanescent field. A fluorescent dye tagged protein detection experiment was conducted on the new PC showing …
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Velocity selection to enable direct measurement of strong single atom-optical cavity coupling
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Physics, 1990.
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Wideband optical frequency comb generator using a phase velocity-matched lithium tantalate electro-optic modulator
A wideband optical frequency comb generator can be built using an electro-optic modulator that is driven at a frequency of several GHz and that is enclosed in an optical cavity. When light is circulated within the optical cavity, multiple passes through the modulator produce a spectrum centered at …
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Stabilization of an FM active harmonic mode-locked fiber laser at high repetition rates
… band near 40GHz to follow variations in the optical cavity length. A second approach based on a Proportional-Integral ( PI) controller and a piezo fiber stretcher was also developed and optimized. This approach uses a circuit-controlled piezo (PZT) device to physically counteract optical …
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Unified treatment of light-induced effects for atomic ensemble in optical cavities
… realistically treat atomic ensembles inside an optical cavity and use these atoms to sense quantum signals. In particular, the limitation of using uncorrelated atoms for metrology is set by the standard quantum limit (SQL) which scales as 1 [square root of N where N is the atom number. The …
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ADPATIVE MODE MATCHING UPGRADE FOR ADVANCED LIGO
… reducing technologies that are sensitive to optical losses generated by optical cavity mode mismatch. Optical losses due to mode mismatched Fabry-P´erot optical cavities can be reduced by the use of adaptive optics, wavefront sensors, and feedback control loops. Advanced LIGO currently uses …
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Ultrasensitive Force Sensing with Nanospheres in an Optical Standing Wave Trap
… a state-of-the-art neutral force sensor using an optically levitated nano-sphere. Trapping 300 nm diameter fused silica spheres using a dual beam optical standing wave trap, we have experimentally reported a force sensitivity of 1.63 0:37aN=Hz1=2. Also we have measured the heating rate of the …
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Extreme optomechanically induced transparency
… and high laser power to achieve extremely strong optical induced transparency effects. This system modifies the light transmission properties of the optical cavity reducing the transmission by a factor of 3 x 10 -3 at the highest power levels. A linewidth reduction of 5 x 10 -5, from 10 kHz to 20 …
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Signal modulation and relative intensity noise properties of transistor laser and nano-cavity VCSEL
… recombination lifetime, high differential optical gain, and low carrier injection density. Due to these characteristics, we have demonstrated that the TL is able to achieve high speed resonance-free optical response as well as ultra-low laser relative intensity noise (RIN) reaching the …
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A Cavity-Coupled Rydberg Atom Array for Quantum Science and Quantum Computing
… configurable arrays of single atoms trapped in optical tweezers, fast, high-fidelity entangling gates through Rydberg interactions, and programmable, parallelized control of qubit operations. Coupling an atom array to an optical cavity opens a new frontier. Leveraging enhanced light-atom …
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