Publications

Korkusinski, Marek K.; Bogan, Alex B.; Studenikin, Sergei S.; Tracy, Lisa A.; Gaudreau, Louis G.; Sachrajda, Andrew S.; Reno, J.L.; Hargett, Terry H.

Abstract not provided.

Bogan, Alex B.; Studenikin, Sergei S.; Gaudreau, Louis G.; Korkusinski, Marek K.; Sachrajda, Andrew S.; Tracy, Lisa A.; Reno, J.L.; Hargett, Terry H.

Abstract not provided.

Tracy, Lisa A.; Luhman, Dwight R.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathan C.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Witzel, Wayne W.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Tracy, Lisa A.; Luhman, Dwight R.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathan C.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Witzel, Wayne W.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Applied Physics Letters

Tracy, Lisa A.; Luhman, Dwight R.; Carr, Stephen M.; Bishop, N.C.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, M.P.; Carroll, Malcolm

We use a cryogenic high-electron-mobility transistor circuit to amplify the current from a single electron transistor, allowing for demonstration of single shot readout of an electron spin on a single P donor in Si with 100 kHz bandwidth and a signal to noise ratio of ∼9. In order to reduce the impact of cable capacitance, the amplifier is located adjacent to the Si sample, at the mixing chamber stage of a dilution refrigerator. For a current gain of ∼ 2.7 × 10 3, the power dissipation of the amplifier is 13 μW, the bandwidth is ∼ 1.3 MHz, and for frequencies above 300 kHz the current noise referred to input is ≤ 70 fA/ Hz. With this amplification scheme, we are able to observe coherent oscillations of a P donor electron spin in isotopically enriched 28Si with 96% visibility.

Tracy, Lisa A.; Reno, J.L.; Hargett, Terry H.

Abstract not provided.

Tracy, Lisa A.; Luhman, Dwight R.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Witzel, Wayne W.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Tracy, Lisa A.; Reno, J.L.; Hargett, Terry H.

Most spin qubit research to date has focused on manipulating single electron spins in quantum dots. However, hole spins are predicted to have some advantages over electron spins, such as reduced coupling to host semiconductor nuclear spins and the ability to control hole spins electrically using the large spin-orbit interaction. Building on recent advances in fabricating high-mobility 2D hole systems in GaAs/AlGaAs heterostructures at Sandia, we fabricate and characterize single hole transistors in GaAs. We demonstrate p-type double quantum dot devices with few-hole occupation, which could be used to study the physics of individual hole spins and control over coupling between hole spins, looking towards eventual applications in quantum computing. Intentionally left blank

England, Troy D.; Tracy, Lisa A.; Curry, Matthew L.; Carr, Stephen M.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Tracy, Lisa A.; Luhman, Dwight R.; Witzel, Wayne W.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Luhman, Dwight R.; Tracy, Lisa A.; Witzel, Wayne W.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathan C.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Luhman, Dwight R.; Tracy, Lisa A.; Witzel, Wayne W.; Carr, Stephen M.; Borchardt, John J.; Biship, Nathan B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Blume-Kohout, Robin J.; Nielsen, Erik N.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Luhman, Dwight R.; Tracy, Lisa A.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Carr, Stephen M.; Luhman, Dwight R.; Nguyen, K.N.; Tracy, Lisa A.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Lilly, Michael L.; Luhman, Dwight R.; Tracy, Lisa A.; Ten Eyck, Gregory A.; Dominguez, Jason J.; Pluym, Tammy P.; Carroll, Malcolm; Wendt, J.R.

Abstract not provided.

Review of Scientific Instruments

Selby, N.S.; Crawford, M.; Tracy, Lisa A.; Reno, J.L.; Pan, Wei P.

We report the design, construction, and characterization of a biaxial sample rotation stage for use in a cryogenic system for orientation-dependent studies of anisotropic electronic transport phenomena at low temperatures and high magnetic fields. Our apparatus allows for continuous rotation of a sample about two axes, both independently and simultaneously.

Luhman, Dwight R.; Nguyen, Khoi N.; Tracy, Lisa A.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Heinrichs, Todd D.; Tracy, Lisa A.

Abstract not provided.

Nguyen, Khoi T.; Lilly, Michael L.; Tracy, Lisa A.; Carr, Stephen M.; Borchardt, John J.; Bishop, Nathaniel B.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Carroll, Malcolm

Abstract not provided.

Lilly, Michael L.; Wendt, J.R.; Pluym, Tammy P.; Stevens, Jeffrey S.; Ten Eyck, Gregory A.; Dominguez, Jason J.; Young, Ralph W.; Nielsen, Erik N.; Muller, Richard P.; Carroll, Malcolm; Lu, Tzu-Ming L.; Tracy, Lisa A.; Nguyen, Khoi T.; Luhman, Dwight R.; Bishop, Nathaniel B.; Singh, Meenakshi S.; Bielejec, Edward S.; Garratt, Elias J.

Abstract not provided.

Applied Physics Letters

Tracy, Lisa A.; Lu, Tzu-Ming L.; Ten Eyck, Gregory A.; Pluym, Tammy P.; Wendt, J.R.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Nguyen, Khoi T.; Stevens, James E.; Grubbs, Robert K.; Pluym, Tammy P.; Dominguez, Jason J.; Young, Ralph W.; Muller, Richard P.; Nielsen, Erik N.; Jacobson, Noah T.; Lilly, Michael L.; Carroll, Malcolm; Bishop, Nathaniel B.; Tracy, Lisa A.; Carr, Stephen M.; Lu, Tzu-Ming L.; Wendt, J.R.

Abstract not provided.

Lu, Tzu-Ming L.; Bishop, Nathaniel B.; Tracy, Lisa A.; Blume-Kohout, Robin J.; Pluym, Tammy P.; Wendt, J.R.; Dominguez, Jason J.; Lilly, Michael L.; Carroll, Malcolm

Abstract not provided.

Muller, Richard P.; Tracy, Lisa A.; Nguyen, Khoi T.; Ten Eyck, Gregory A.; Lilly, Michael L.; Carroll, Malcolm; Nielsen, Erik N.; Gao, Xujiao G.; Young, Ralph W.; Salinger, Andrew G.; Kalashnikova, Irina; Bishop, Nathaniel B.; Carr, Stephen M.; Lu, Tzu-Ming L.

Abstract not provided.

Lu, Tzu-Ming L.; Cederberg, Jeffrey G.; Lilly, Michael L.; Carroll, Malcolm; Bishop, Nathaniel B.; Tracy, Lisa A.; Blume-Kohout, Robin J.; Pluym, Tammy P.; Wendt, J.R.; Dominguez, Jason J.; Means, Joel L.; Kotula, Paul G.

Abstract not provided.