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Search Publications by: Raymond Simmonds (Fed)

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Displaying 26 - 50 of 87

A phononic bandgap shield for high-Q membrane microresonators

January 15, 2014
Author(s)
Raymond W. Simmonds, P.-L. Yu, Katarina Cicak, N. S. Kampel, Y. Tsaturyan, T. P. Purdy, C. A. Regal
A phononic crystal can control the acoustic coupling between a resonator and its support structure. We micromachine a phononic bandgap shield for high Q silicon nitride membranes and study the driven displacement spectra of the membranes and their support

Dynamical Autler-Townes control of a phase qubit

September 10, 2012
Author(s)
Jian Li, G.S. Paraoanu, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Mika A. Sillanpaa, Pertti Hakonen
We present an experimental demonstration of a phase qubit acting as an on/o® switch for the absorbtion of photons in a probe microwave beam. The switch is controlled by a second control microwave ¯eld. The on/o® states of the qubit are steady states which

Quantum interference between two single photons of different microwave frequencies

April 20, 2012
Author(s)
Francois E. Nguyen, Eva A. Zakka-Bajjani, Jose A. Aumentado, Raymond W. Simmonds
Quantum interference is an important tool for fields such as lithography, metrology and quantum processing. Two identical optical photons (photons with the same wavelength and polarization) simultaneously sent through the two input ports of a semi

Entangled-state synthesis for superconducting resonators

February 27, 2012
Author(s)
Raymond W. Simmonds, Frederick W. Strauch, Kurt Jacobs, Douglas Onyango
We present a theoretical analysis of methods to synthesize entangled states of two superconducting resonators. These methods use experimentally demonstrated interactions of resonators with artificial atoms and offer efficient routes to generate

Manipulating Particle Trajectories with Phase-control in Surface Acoustic Wave Microfluidics

November 14, 2011
Author(s)
Nathan D. Orloff, Jaclyn R. Dennis, Marco Cecchini, Ethan Schonbrun, Eduard Rocas, Yu Y. Wang, David R. Novotny, Raymond W. Simmonds, John M. Moreland, Ichiro Takeuchi, James C. Booth
We present a 91 MHz surface acoustic wave resonator with integrated microfluidics that includes a flow focus, an expansion region, and a binning region. We demonstrate the ability to change the position of the acoustic nodes by varying the electronics

Decoherence, Autler-Townes effect, and dark states in two-tone driving of a three-level superconducting system

September 30, 2011
Author(s)
Jian Li, G.S. Paraoanu, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Mika A. Sillanpaa, Pertti Hakonen
We present a detailed theoretical and experimental study of a multi-level quantum system coupled to two radiation ¯elds and subject to decoherence. We concentrate on an e®ect known from quantum optics as the Autler-Townes splitting, which has been recently

Sideband cooling of micromechanical motion to the quantum ground state

July 6, 2011
Author(s)
John Teufel, Tobias Donner, Dale Li, Michael S. Allman, Katarina Cicak, Adam Sirois, Jed D. Whittaker, Konrad Lehnert, Raymond Simmonds
The advent of laser cooling techniques revolutionized the study of many atomic-scale systems, fuelling progress towards quantum computing with trapped ions and generating new states of matter with Bose–Einstein condensates. Analogous cooling techniques can

Quantum superposition of a single microwave photon in two different colour states

July 3, 2011
Author(s)
Eva A. Zakka-Bajjani, Francois E. Nguyen, Minhyea Lee, Leila R. Vale, Raymond Simmonds, Joe Aumentado
The ability to manipulate photonic states is an important tool for quantum information processing. In cavity quantum electrodynamics (QED), coupling between bosonic modes has, until now, required a qubit to mediate the interaction. As an alternative, it is

Introduction of a DC Bias into a High-Q Superconducting Microwave Cavity

March 31, 2011
Author(s)
Rimberg J. Alex, Fei Chen, Adam J. Sirois, Raymond Simmonds
We report a technique for applying a dc voltage or current bias to the center conductor of a high-quality factor superconducting microwave cavity without significantly disturbing selected cavity modes. This is accomplished by incorporating dc bias lines

Circuit cavity electromechanics in the strong-coupling regime

March 9, 2011
Author(s)
John Teufel, Dale Li, Michael S. Allman, Katarina Cicak, Adam Sirois, Jed D. Whittaker, Raymond Simmonds
Demonstrating and exploiting the quantum nature of macroscopic mechanical objects would help us to investigate directly the limitations of quantum-based measurements and quantum information protocols, as well as to test long-standing questions about

Measurement crosstalk between two phase qubits coupled by a coplanar waveguide

September 14, 2010
Author(s)
Fabio Altomare, Katarina Cicak, Mika A. Sillanpaa, Michael S. Allman, Dale Li, Adam J. Sirois, Joshua Strong, Jae Park, Jed D. Whittaker, Raymond W. Simmonds
We investigate measurement crosstalk in a system with two flux-biased phase qubits coupled by a resonant coplanar waveguide cavity. After qubit measurement, the superconducting phase undergoes damped oscillations in a deep anharmonic potential producing a

Remote sensing and control of phase qubits

September 10, 2010
Author(s)
Dale Li, Fabio C. Da Silva, Danielle Braje, Raymond W. Simmonds, David P. Pappas
We demonstrate a remote sensing design of phase qubits by separating the control and readout circuits from the qubit loop. This design improves measurement reliability because the control readout chip can be fabricated using more robust materials and can

Tripartite interactions between two phase qubits and a resonant cavity

August 1, 2010
Author(s)
Fabio Altomare, Jae Park, Katarina Cicak, Mika Sillanpaa, Michael S. Allman, Adam J. Sirois, Joshua Strong, Jed D. Whittaker, Raymond Simmonds
The ability to create and manipulate the entanglement of a large number of quantum systems lies at the heart of emerging quantum information technologies. Thus far, multipartite entanglement has been achieved using various forms of quantum bits (qubits)

Arbitrary Control of Entanglement between Two Superconducting Resonators

July 27, 2010
Author(s)
Raymond W. Simmonds
We present a method to synthesize an arbitrary quantum state of two superconducting resonators. This state-synthesis algorithm utilizes a coherent interaction of each resonator with a tunable arti cial atom to create entangled quantum superpositions of