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Browsing by Author "Biercuk, MJ"

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Analytically exploiting noise correlations inside the feedback loop to improve locked-oscillator performance

Author: Sastrawan, J ; Jones, C ; Akhalwaya, I ; Uys, H ; Biercuk, MJ Date: Aug 2016 We introduce concepts from optimal estimation to the stabilization of precision frequency standards limited by noisy local oscillators. We develop a theoretical framework casting various measures for frequency standard variance in terms of ... Read more
Arbitrary quantum control of qubits in the presence of universal noise

Author: Green, TJ ; Sastrawan, J ; Uys, H ; Biercuk, MJ Date: Sep 2013 We address the problem of deriving analytic expressions for calculating universal decoherence-induced errors in qubits undergoing arbitrary, unitary, time-dependent quantum control protocols. We show that the fidelity of a control operation ... Read more
Decoherence due to elastic rayleigh scattering

Author: Uys, H ; Biercuk, MJ ; VanDevender, AP ; Ospelkaus, C ; Meiser, D ; Ozeri, R ; Bollinger, JJ Date: Nov 2010 The authors present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of light off resonant with higher lying excited states. They demonstrate that under ... Read more
Engineered two-dimensional Ising interactions in a trapped-ion quantum simulator with hundreds of spins

Author: Britton, JW ; Sawyer, BC ; Keith, AC ; Wang, CCJ ; Freericks, JK ; Uys, H ; Biercuk, MJ ; Bollinge, JJ Date: Apr 2012 The presence of long-range quantum spin correlations underlies a variety of physical phenomena in condensed-matter systems, potentially including high-temperature superconductivity. However, many properties of exotic, strongly correlated spin ... Read more
Experimental bath engineering for quantitative studies of quantum control

Author: Soare, A ; Ball, H ; Hayes, D ; Zhen, X ; Jarratt, MC ; Sastrawan, J ; Uys, H ; Biercuk, MJ Date: Apr 2014 We develop and demonstrate a technique to engineer universal unitary baths in quantum systems. Using the correspondence between unitary decoherence due to ambient environmental noise and errors in a control system for quantum bits, we show ... Read more
High-order noise filtering in nontrivial quantum logic gates

Author: Green, T ; Uys, H ; Biercuk, MJ Date: Jul 2012 Treating the effects of a time-dependent classical dephasing environment during quantum logic operations poses a theoretical challenge, as the application of noncommuting control operations gives rise to both dephasing and depolarization ... Read more
Spectroscopy and thermometry of drumhead modes in a mesoscopic trapped-ion crystal using entanglement

Author: Sawyer, BC ; Britton, JW ; Keith, AC ; Joseph Wang, CCJ ; Freericks, JK ; Uys, H ; Biercuk, MJ ; Bollinger, JJ Date: May 2012 We demonstrate spectroscopy and thermometry of individual motional modes in a mesoscopic 2D ion array using entanglement-induced decoherence as a method of transduction. Our system is a 400 µm-diameter planar crystal of several hundred 9Be+ ... Read more

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Browsing by Author "Biercuk, MJ"

Browsing by Author "Biercuk, MJ"

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All of ResearchSpace

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